Red Hat Enterprise Linux 7
Monthly
Out-of-bounds heap read in GIMP's TIM image loader is triggered when a user opens a crafted 4bpp TIM image that is promoted to an RGBA layer, causing the file-tim plug-in to allocate an undersized row buffer and then process it with the larger RGBA row size. The result is disclosure of adjacent heap memory into the decoded image and a possible plug-in crash, with exploitation requiring local access and victim user interaction (CVSS 4.4, CWE-125). No public exploit is identified at time of analysis, and impact is bounded to partial confidentiality loss and availability loss rather than code execution.
Deleted or deprovisioned users can retain authorization on hosts running SSSD with the LDAP access provider when ldap_access_order includes ppolicy or lockout, because a user lookup that returns zero results trips a fail-open path that reports success and caches an allow decision. A remote attacker who already holds valid account context on the SSSD-managed host (authenticated, PR:L) can exploit this after offboarding to keep reading information and make limited modifications, giving low confidentiality and integrity impact (CVSS 3.1 5.4 Medium). The flaw only affects non-default access configurations that explicitly enable ppolicy/lockout ordering, and no public exploit identified at time of analysis.
A stack buffer overflow in libstoragemgmt's SCSI VPD page 0x80 serial-number parser lets an attacker who controls a local or virtual storage device crash or destabilize the host process that enumerates that device, yielding a denial of service with no confidentiality or integrity impact (CVSS 3.1: AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H, base 5.5). Exploitation requires low privileges on the host (PR:L, so an authenticated/local actor) plus the ability to attach or present a device, and it only triggers when the affected process actually queries the device's serial number - the vector is local, not remotely reachable over a network. No public exploit code was identified at time of analysis and there is no confirmed active exploitation (CISA KEV); the practical risk is concentrated in environments that enumerate untrusted or attacker-attachable storage, such as multi-tenant virtualization or hosts that accept hostile removable, iSCSI, or hypervisor-presented disks.
Isochronous OUT stream handling in usbredir can leave a stream's single transfer buffer permanently unsubmitted when a transfer count of 1 is used, which defeats the bounds check in usbredirhost_iso_packet() and lets a usbredir peer write beyond the end of the packet descriptor array on every subsequent isochronous packet. The flaw is an out-of-bounds write (CWE-787) affecting usbredir as shipped in Red Hat Enterprise Linux 6 through 10, and the published CVSS:3.1 vector (AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H, score 4.1) reflects a local, high-complexity, privileged trigger path whose dominant impact is availability loss rather than code execution. No public exploit identified at time of analysis, and the bug is not listed as confirmed actively exploited (CISA KEV); the realistic risk is materially lower than the raw memory-corruption classification suggests.
Stack-based buffer overflow in fetchmail when built with NTLM support allows a malicious or compromised mail server to trigger memory corruption by sending a crafted NTLM Type 2 challenge, potentially leading to remote code execution, authentication failure, or process termination. Exploitation requires fetchmail to be built with NTLM and configured to authenticate via NTLM against an attacker-controlled or man-in-the-middle'd server; no public exploit code or active exploitation has been identified. The flaw carries a CVSS score of 8.1 with high confidentiality, integrity, and availability impact, though reliable RCE is limited by stack-frame layout and modern memory hardening (stack canaries, ASLR, FORTIFY_SOURCE) on RHEL builds.
An integer-wraparound in Cockpit's do_lastlog() login-accounting routine on ILP32 (32-bit) builds allows a low-privileged but authenticated local user holding an administrator-provisioned abnormally large UID to read and modify other users' lastlog records, producing low confidentiality and low integrity impact (CVSS 3.1 base 3.6, AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N). Exploitation requires a 32-bit build, a deliberately created large-UID account, and local access to the host; 64-bit LP64 builds do not overflow and are unaffected, and no public exploit code has been identified at time of analysis.
Denial of service in Red Hat's cockpit-ws web service lets a remote, unauthenticated attacker crash the process by sending a request to the exact configured WebService.UrlRoot prefix without a trailing slash, taking the Cockpit management interface offline. The flaw is only reachable on installations that have explicitly set the non-default WebService.UrlRoot option; default deployments are unaffected, and impact is availability-only with no data exposure or code execution. There is no public exploit identified at time of analysis, no confirmed active exploitation (not in CISA KEV), and exploitation carries a high-attack-complexity rating (AC:H) because the attacker must know and target the exact URL-root path.
Rendering a crafted PDF through Poppler's Splash backend can pin a CPU core at 100% for an extended attacker-controlled duration. The flaw in SplashOutputDev::tilingPatternFill computes an excessive loop count from tiling-pattern geometry near the int32 limit, without allocating memory. This availability-only issue affects Red Hat Enterprise Linux 6, 7, 8, 9, and 10, and Red Hat Hardened Images, and exploitation requires a victim to open a malicious PDF (UI:R, AV:L, PR:N - no privileges required). No public exploit identified at time of analysis, and no confirmed active exploitation.
A NULL pointer dereference in libxml2's XML catalog parser allows a crash-induced denial of service when a catalog file contains a `nextCatalog` element missing its mandatory `catalog` attribute. Affected deployments are those in which an application linked against libxml2 parses an attacker-influenced catalog - Red Hat Enterprise Linux 6 through 10, Red Hat Hardened Images, and OpenShift Container Platform 4 carry vulnerable libxml2 packages per the supplied CPE data. The attack vector is local (AV:L) and requires user interaction (UI:R) to induce parsing of the crafted file, with no authentication required (PR:N); impact is limited to availability (C:N/I:N/A:H) and there is no public exploit identified at time of analysis. Exploitation is constrained by the need for the target to actually perform catalog parsing on untrusted input and by resilient/restartable services absorbing the crash.
CPU exhaustion denial of service in jwcrypto's JWK.import_key() allows a remote unauthenticated attacker to supply a crafted JWK with an arbitrarily large key_ops array and trigger O(n²) duplicate-detection work, consuming CPU proportional to the square of the array length. Any Python application that passes externally-supplied JWK material to this API - via ECDH-ES key agreement, OIDC dynamic client registration, DPoP proof parsing, or ACME account key registration - is vulnerable. No public exploit or active exploitation (CISA KEV) has been identified at time of analysis; CVSS rates this at 5.9 (Medium) with AC:H reflecting the requirement that attacker-controlled key material must reach the vulnerable code path.
GNOME Shell fails to validate the declared dimensions of icons returned by a remote search provider over D-Bus against the actual icon data buffer, producing an out-of-bounds read when an oversized size is supplied. A malicious or compromised search provider registered in a user's session can crash the shell — terminating the desktop session — and may leak fragments of adjacent shell memory. Rated CVSS 6.1 (AV:L/UI:R/C:L/A:H) by Red Hat; no public exploit code or CISA KEV entry was identified at time of analysis, so exploitation currently requires a locally present hostile search provider rather than remote access.
An out-of-bounds read in the SSSD NSS responder allows any local user who can reach the responder's UNIX socket to crash the process by sending a specially crafted service lookup request, degrading local name/service resolution on the host. Only SSSD deployments shipped with Red Hat Enterprise Linux 6 through 10 and OpenShift Container Platform 4 nodes are listed as affected by the vendor CPE data, and the flaw requires local socket access rather than network reach. There is no public exploit code and no CISA KEV listing; SSVC records exploitation as 'none' and the issue carries a modest CVSS 3.1 base score of 4.0 (availability impact only).
Denial of service in multipathd allows a local attacker with access to the UNIX control socket to permanently block the daemon's listener thread by sending valid commands and then refusing to read the replies. This renders legitimate IPC operations - such as multipath path queries and storage management commands - unable to complete until the daemon is restarted. Red Hat, the reporting source, explicitly confirms the issue is bounded to availability impact only: no privilege escalation, no code execution, and no confidentiality or integrity loss. No public exploit code has been identified at time of analysis.
Heap buffer overflow in the libtiff `tiff2pdf` utility allows local attackers to cause severe memory corruption and application crashes by supplying a crafted BigTIFF file. The root cause is an integer truncation: a 64-bit `StripByteCounts` value is silently narrowed to 32 bits, producing an undersized heap allocation that a subsequent memory copy overflows. Red Hat has issued advisory RHSA-2026:53467 and an upstream fix is available via libtiff GitLab merge request #729; no public exploit or active exploitation has been identified at time of analysis.
Symlink-following in libvirt's qemuTPMEmulatorPrepareHost() allows a local attacker with access to the swtpm service account to redirect a path-based chown() call - executed by libvirtd running as root - to transfer ownership of any arbitrary file on the system to the swtpm user. This affects libvirt on Red Hat Enterprise Linux 6 through 10. With ownership of a sensitive file such as /etc/shadow or a cron directory transferred to swtpm, the attacker gains a privilege escalation primitive beyond the swtpm account boundary. No public exploit or active exploitation has been identified at time of analysis.
Integer overflow in GStreamer's gst-plugins-good isomp4 plugin exposes adjacent heap memory when parsing CEA-608 closed-caption data embedded in specially crafted MP4 or MOV files. The 32-bit unsigned arithmetic wraparound bypasses a bounds check, enabling an out-of-bounds heap read of up to 244 bytes that is forwarded into downstream caption output - leaking process memory to an attacker who controls caption rendering output. Affected platforms include Red Hat Enterprise Linux 6 through 10; no public exploit has been identified at time of analysis, and no active exploitation is confirmed.
JavaScript injection in Evolution email client allows a remote, unauthenticated attacker to execute arbitrary JavaScript within the mail-viewing context by sending a specially crafted HTML email containing a spoofed vCard control. When the victim clicks the vCard control, Evolution's trusted JavaScript handler incorrectly places an attacker-controlled javascript: URL into an iframe's src attribute, bypassing Evolution's own script-execution protections for email content. The vulnerability is classified CWE-84 (improper neutralization of encoded URI schemes), and exploitation requires one user interaction gesture - clicking the vCard element - making it realistic against any Evolution user on a RHEL or GNOME desktop. No public exploit code or CISA KEV listing has been identified at time of analysis.
Case-insensitive username comparisons in two code paths of the CUPS scheduler - printer ACL validation and private-attribute filtering - allow an authenticated adjacent-network attacker to bypass username-based access controls in configurations that rely on those ACLs. The bypass exposes private print attributes to users who should be excluded by ACL policy. Affected deployments span Red Hat Enterprise Linux 6 through 10, Red Hat Hardened Images, and OpenShift Container Platform 4. No public exploit or active exploitation has been identified at time of analysis, consistent with the low CVSS base score of 3.0.
Heap out-of-bounds read in CUPS's cupsUTF32ToUTF8() transcoding function exposes partial daemon heap memory to adjacent-network attackers without authentication. The vulnerable code path is reachable via SNMP supply-description parsing, meaning any attacker who can spoof or inject crafted SNMP responses on the same network segment as a CUPS host can trigger the read and potentially leak heap contents from the printing daemon. No active exploitation has been identified, and the adjacent-network attack vector significantly limits the exposure surface.
Symlink-following race condition in GLib2's g_file_replace() allows a local attacker with write access to the destination directory to redirect privileged file writes to arbitrary files. When the G_FILE_CREATE_REPLACE_DESTINATION flag is set and creation of the .goutputstream-XXXXXX temporary file fails, GLib2 unlinks the destination and then recreates it without O_EXCL (exclusive creation) or symlink-safe open semantics, opening a TOCTOU race window. An attacker who wins this race by placing a symlink at the destination path can cause any process using this code path - potentially running with elevated privileges - to overwrite files the attacker cannot directly modify. No public exploit has been identified at time of analysis.
Flatpak's `org.freedesktop.Flatpak.SystemHelper` D-Bus service contains a TOCTOU race condition in the `Deploy()` function where a privileged `chmod` executes before OSTree repository validation completes, allowing a local low-privileged attacker to redirect symlinks to arbitrary system files within that timing window. A successful exploit can yield high-confidentiality impact (reading privileged files) and limited integrity and availability impact (CVSS C:H/I:L/A:L), as the unguarded chmod can be inherited by attacker-controlled symlink targets. No public exploit code or CISA KEV listing has been identified at time of analysis, and the High attack complexity (AC:H) reflects the precision timing required to win the race.
HTTP/2 flow-control window mismanagement in libsoup (GNOME's HTTP client/server library) allows a malicious HTTP/2 server to abort a connecting client process or crash its HTTP/2 session. When the client sends a request body sourced from a non-pollable GInputStream, libsoup buffers the data before transmission; a server that then shrinks SETTINGS_INITIAL_WINDOW_SIZE causes the client to copy the full pre-buffered payload into a now-undersized DATA callback without a runtime bounds check, triggering a reachable assertion abort (CWE-617). No public exploit has been identified at time of analysis, and the high-complexity timing requirement constrains practical exploitation.
Integer overflow in Corosync's membership commit token processing crashes the daemon on 32-bit cluster nodes, enabling a denial-of-service attack from any adjacent network host. The CWE-190 flaw causes the length validation to be bypassed on 32-bit systems where arithmetic wraps before the bounds check is applied, resulting in an out-of-bounds memory access that kills the Corosync process. Modern 64-bit deployments of the same packages are explicitly not affected, substantially narrowing real-world exposure despite the CVSS 6.5 rating; no public exploit code or CISA KEV listing exists at time of analysis.
Key-ID (kid) bypass in the jwcrypto Python JOSE library allows an attacker who holds any valid key within a JWK set to forge a General JSON Serialization JWS that satisfies verification for a different kid, effectively impersonating another tenant, user, or service. Affected deployments include Red Hat Ansible Automation Platform 2, RHEL 7-10, Red Hat OpenShift AI (RHOAI), and Red Hat OpenStack Platform 16.2, wherever jwcrypto performs JWS signature verification with kid-based authorization. No public exploit or CISA KEV listing has been identified at time of analysis, and the EPSS score is not provided, but the integrity impact is high for multi-tenant architectures.
Stack exhaustion in gfs2-utils's metawalk.c metadata walk code allows a local attacker to cause denial of service by supplying a crafted GFS2 filesystem image containing a maliciously large inode height value that drives unbounded alloca() calls. Affected systems include Red Hat Enterprise Linux 7, 8, and 9 with gfs2-utils installed; the CVSS 4.7 medium rating reflects a local, high-complexity, user-interaction-required attack path with no confidentiality or integrity impact. No public exploit code or active exploitation has been identified at time of analysis.
Heap out-of-bounds read in gfs2-utils enables memory disclosure and potential crashes when parsing crafted GFS2 filesystem images. The `ea_num_ptrs` field embedded in on-disk extended attribute metadata is consumed without validating it against the available buffer boundary, allowing an attacker who controls a filesystem image to trigger a heap over-read. Affected across Red Hat Enterprise Linux 7, 8, and 9; no public exploit is identified at time of analysis, and the local, user-interaction-dependent attack vector substantially limits practical exploitation.
Stack exhaustion in gfs2-utils allows an attacker who can deliver a crafted GFS2 filesystem image to crash fsck.gfs2, gfs2_edit, or savemeta on Red Hat Enterprise Linux 7, 8, and 9. The root cause is unbounded use of alloca() in metawalk.c's hash table traversal, where the allocation size is derived exponentially from the on-disk di_depth field with no upper-bound check, so a sufficiently large di_depth value causes the process stack to be fully consumed. The impact is limited to denial of service of the affected utility; no public exploit has been identified at time of analysis, and EPSS data is not available in the provided intelligence.
Crash of the gvfsd-mtp daemon in gvfs is achievable by anyone who can connect a malicious USB MTP device to a target Linux system. The do_read() function in gvfsbackendmtp.c accepts the byte-count reported by the device at face value and passes it uncapped to memcpy(), causing an out-of-bounds read that triggers a segmentation fault when the device deliberately over-reports its response length. The vulnerability affects gvfs as packaged across Red Hat Enterprise Linux 6 through 10; no public exploit has been identified and exploitation is constrained by physical proximity.
Heap buffer overflow in the gvfs AFP (Apple Filing Protocol) backend allows a malicious AFP server to crash the gvfsd-afp process on connecting clients, resulting in denial of service. When a client mounts an AFP share, the DSI (Data Stream Interface) read path accepts a server-supplied length value without validating it against the pre-allocated reply buffer, enabling the server to write past buffer boundaries. This affects RHEL 6 through 10 and requires user interaction to mount a malicious share; no public exploit or CISA KEV listing has been identified at time of analysis.
Uninitialized heap memory disclosure in gvfs's SFTP backend enables a malicious SFTP server to deterministically defeat ASLR on client systems running RHEL 6 through 10. When a user mounts a crafted SFTP share, the read_string() parser allocates a buffer for the FXP_HANDLE response but does not verify that the buffer is fully populated; the client subsequently echoes the uninitialized remainder - containing heap base pointers and the libgio load address - back to the attacker on every subsequent file-handle request. No public exploit has been identified at time of analysis, and the issue does not appear in CISA KEV, but the ASLR bypass it achieves is a high-value precursor for chained memory-corruption attacks against gvfsd-sftp.
Unauthenticated enumeration of internal PKI topology is possible in Red Hat Certificate System 9 through an unprotected REST endpoint. Any network-accessible client can issue GET /ca/rest/securityDomain/hosts and receive a structured inventory of all participating CA subsystem hosts, their roles, and security domain membership - without presenting credentials, a client certificate, or a session token. While the direct CVSS impact is rated medium (5.3), the real-world significance lies in enabling precise reconnaissance of internal PKI infrastructure that could facilitate targeted follow-on attacks against specific subsystems. No active exploitation is confirmed and no public exploit code has been identified at time of analysis.
Unauthenticated network attackers can elicit Java stack traces from Red Hat IdM's Dogtag CA REST enrollment endpoint (POST /ca/rest/certrequests) by submitting malformed requests, causing HTTP 500 responses that expose internal implementation details under CWE-209. The same error path simultaneously amplifies the CA debug log with large multi-line stack traces, creating a log-fill resource exhaustion vector that drives disk growth and I/O contention on affected RHEL 6 through 10 deployments. No public exploit has been identified at time of analysis, but the attack requires no authentication and low complexity, making it accessible to unskilled opportunistic attackers targeting IdM infrastructure.
Heap metadata corruption in the popt command-line parsing library's `poptConfigFileToString` function can be triggered by a local, low-privileged attacker who supplies specially crafted configuration file content to an affected host. Successful exploitation causes the consuming process to crash, resulting in denial of service. CVSS 2.5 (Low) reflects the strictly local, high-complexity exploitation path with no confidentiality or integrity impact; no public exploit code or active exploitation (CISA KEV) is known at time of analysis.
Heap out-of-bounds read and stack out-of-bounds access in GIMP's file-psd plugin allow an attacker to crash the application or disclose limited memory contents by convincing a user to open a specially crafted PSD image. The flaw affects GIMP as shipped in Red Hat Enterprise Linux 6 through 9 and stems from missing validation of the channel-count parameter during PSD parsing. No active exploitation has been identified; the attack requires local file delivery and deliberate user interaction, significantly constraining real-world risk.
Heap out-of-bounds read in GIMP's file-pvr plugin exposes users of Red Hat Enterprise Linux 6 through 9 to application crashes and limited heap memory disclosure when opening a crafted PVR image file. The VQ (Vector Quantization) compressed-texture decoder omits mandatory bounds validation, allowing a malicious image to read beyond allocated heap regions. Impact is primarily denial of service via crash, with a secondary low-severity information disclosure path; no public exploit code and no CISA KEV listing are associated with this issue at time of analysis.
Heap out-of-bounds read in GIMP's file-ico plugin allows a local attacker to crash GIMP or leak limited heap memory contents by delivering a specially crafted ICO image file to a victim user. Affected packages span Red Hat Enterprise Linux 6 through 9. No public exploit code or CISA KEV listing exists at time of analysis, but the user-interaction requirement (opening a malicious file) is the primary delivery mechanism and a realistic social-engineering target in image-processing workflows.
Out-of-bounds memory write in libsolv crashes RPM-based package manager tools (dnf, yum, zypper) when processing a corrupted or specially crafted .solv repository cache file. The root cause is an absent array-index bounds check on directory-id values read from compressed filelist data during .solv file rewriting - but because the out-of-bounds write stores only a fixed, non-attacker-controlled value, the vendor explicitly rules out arbitrary code execution, confining impact to denial of service. No public exploit has been identified and no active exploitation is confirmed; note that the 'RCE' metadata tag conflicts directly with the description and appears to be erroneous.
Heap out-of-bounds read in GIMP's file-iff plugin allows a local attacker to crash the application or disclose limited heap memory contents by delivering a specially crafted IFF/ILBM image file. The flaw stems from missing validation of HAM row size when the number of color planes (nPlanes) is zero, causing a size mismatch that bypasses memory bounds checking. No active exploitation has been confirmed (not in CISA KEV) and no public exploit code has been identified at time of analysis.
Out-of-bounds write in gdk-pixbuf's JPEG decoder affects any application on Red Hat Enterprise Linux 6 through 10 that renders JPEG images containing chunked ICC profile markers. When ICC profile parsing encounters an error, stale size metadata persists after the profile buffer is freed; a subsequent allocation within the same decode operation then writes beyond buffer boundaries, crashing the application. No active exploitation has been identified (no CISA KEV listing), and no public exploit code is known at time of analysis, but the availability-only impact and user-interaction requirement make this a realistic denial-of-service risk in desktop and server image-processing contexts.
Stack-based denial of service in GIMP's Seattle FilmWorks (SFW) image plugin crashes the application when a crafted SFW file triggers an unbounded variable-length array allocation on the stack. The flaw affects all GIMP versions per the GNOME CPE string and is confirmed across Red Hat Enterprise Linux 6 through 9. An attacker who can deliver a malicious SFW file to a user can reliably crash the GIMP process with no code execution or data exposure; no public exploit has been identified at time of analysis.
Heap out-of-bounds read in GIMP's file-xwd plugin allows a crafted XWD image file to trigger an application crash or leak partial heap memory contents into the rendered image output. Users running GIMP on Red Hat Enterprise Linux 6 through 9 are affected when they open a malicious XWD file; the plugin fails to cross-validate image width and bytes-per-line parameters against the allocated buffer size, permitting an out-of-bounds read. No public exploit is identified at time of analysis and the vulnerability is not listed in CISA KEV, placing real-world urgency in the low-to-moderate range.
Resource exhaustion via crafted SASL UNBIND in 389 Directory Server (389-ds-base) allows a remote authenticated attacker to stall connections and deny LDAP service to legitimate users. Affected deployments span Red Hat Directory Server 11, 12, and 13, plus 389-ds-base as packaged across RHEL 6 through 10. No public exploit code or CISA KEV listing has been identified at time of analysis, though the CVSS 6.5 rating (AV:N/AC:L/PR:L) indicates low-complexity network exploitation requiring only a low-privilege LDAP bind - a realistic bar in any environment with shared directory users.
Stack buffer overflow in file-roller's archive extraction path causes denial of service when a victim opens or extracts a crafted 7z or RAR archive containing an excessively long file path entry. The unbounded string copy in the progress-line parsing routine overwrites a fixed-size stack buffer, crashing the application with no confidentiality or integrity impact. No public exploit code or CISA KEV listing has been identified at time of analysis, and exploitation is gated entirely on user interaction with a malicious archive.
Stack exhaustion and a bounded memory over-read in GIMP's file-pix (ESM) plugin allow a crafted PIX image to crash the application and leak 21 bytes of stack memory into an intermediate file. Users running GIMP on Red Hat Enterprise Linux 6 through 9 are affected when opening untrusted PIX format images. No public exploit code and no active exploitation (CISA KEV) have been identified at time of analysis, though the DoS impact is reliable and the delivery vector - a malicious image file - is realistic for desktop users.
Improper certificate validation in JSS (Java Security Services) allows the JSSTrustManager class to accept CA certificates from the NSS database that lack TRUSTED_CA trust flags, meaning certificates never explicitly designated as trust anchors can still be used to anchor TLS chains. In non-default deployments where certificate revocation checking has been disabled, this creates a viable path for a man-in-the-middle attacker to forge certificates accepted by PKI client connections, with high confidentiality and low integrity impact. No public exploit has been identified at time of analysis, and the AC:H CVSS rating reflects the meaningful attack complexity - MITM positioning plus a specific non-default configuration must both be present.
Denial of service in FreeIPA's ipa-enrollment SLAPI plugin allows any authenticated LDAP client to crash the 389 Directory Server by sending a malformed extended operation. The flaw (CWE-476, null pointer dereference) is triggered by omitting the request value for the JOIN_OID in the ipa-enrollment extended operation, causing the server to dereference a null pointer and crash. No public exploit or active exploitation has been identified at time of analysis; however, the low attack complexity and network-accessible vector make this a credible threat against any RHEL Identity Management deployment.
Resource exhaustion in FreeIPA's OTP key processing path allows any low-privilege authenticated domain user to degrade the IPA authentication service. By submitting an oversized One-Time Password key, the user triggers an unbounded decode/re-encode cycle (CWE-770) that consumes excessive CPU and memory, degrading availability for all dependent systems and users. No public exploit code exists at time of analysis, and this CVE is not listed in CISA KEV; however, the AV:N/PR:L CVSS vector means any valid domain account on a network-accessible FreeIPA instance is sufficient to trigger the condition.
Integer truncation in libsoup's SoupServer Range-header comparator silently drops byte ranges from HTTP 206 Partial Content responses when the target resource exceeds approximately 2 GB. The sort_ranges() function in soup-message-headers.c narrows a 64-bit offset subtraction to a 32-bit int return value, inverting the comparator sign whenever offsets differ by more than INT_MAX, causing incorrect range sorting and silent omission of content. No public exploit code or CISA KEV listing has been identified at time of analysis; exploitation requires network access to a SoupServer instance serving files larger than ~2 GB.
Out-of-bounds memory read in BlueZ's AVRCP implementation allows a physically proximate attacker - within Bluetooth radio range - to crash the bluetoothd daemon and potentially leak heap memory contents by sending a malformed GetFolderItems response. The flaw resides in parse_media_element() and parse_media_folder(), which fail to validate packet length fields before reading. Exploitation requires the victim to interactively pair with the attacker-controlled malicious Bluetooth device. No public exploit code or CISA KEV listing has been identified at time of analysis.
Privileged file corruption and denial of service in sblim-sfcb (Small Footprint CIM Broker) on Red Hat Enterprise Linux 6 through 10 is achievable by a local low-privileged attacker exploiting a symlink-based race condition during privileged instance migration. The SFCB daemon writes to a temporary file in /tmp without atomic safety guarantees, allowing an attacker who repeatedly races a symbolic link into place to redirect that privileged write to an arbitrary file path. No public exploit has been identified at time of analysis, and this CVE is not listed in the CISA KEV catalog.
Out-of-bounds memory read in sblim-sfcb's provider-manager IPC message parser allows a local low-privileged attacker to crash the provider-manager process, causing denial of service and potentially leaking limited adjacent memory contents. The vulnerability stems from unsafe deserialization of attacker-controlled IPC messages without adequate boundary validation, affecting sblim-sfcb as shipped across Red Hat Enterprise Linux versions 6 through 10. No public exploit code or active exploitation has been identified at time of analysis, and exploitation is constrained to local system access.
Insecure temporary file creation in sblim-cmpi-base provider registration scripts exposes Red Hat Enterprise Linux 6 through 10 to a local symlink attack, enabling a low-privileged user to redirect privileged file writes to arbitrary paths. When registration scripts execute under elevated (root) privileges, an attacker who pre-positions a symlink in a world-writable directory can cause those scripts to overwrite root-owned files, disrupting system services or integrity. No public exploit code has been identified at time of analysis, and exploitation requires both local access and favorable timing, but the integrity and availability impact on a compromised host are rated high by the vendor.
Integer underflow in GStreamer's avidemux element allows a remote unauthenticated attacker to trigger heap out-of-bounds read and write, heap memory disclosure, and application crash by delivering a crafted AVI file containing a malformed FUJIFILM strd chunk. The gst_avi_demux_parse_strd() function decrements its remaining-length counter by fixed offsets without bounds checking, causing unsigned integer wraparound for payloads of exactly 106 or 107 bytes. Because avidemux is auto-plugged by GStreamer's high-level components (playbin, decodebin, gst-discoverer), any application that opens or previews a media file - including GNOME Files, Nautilus, Totem, and many others - can trigger the vulnerability without user awareness. No public exploit or active exploitation (CISA KEV) has been identified at time of analysis; a vendor-released patch is available in gst-plugins-good 1.28.6.
Out-of-bounds read in GStreamer's avidemux plugin (gst-plugins-good) allows a remote, unauthenticated attacker to crash media-processing applications and potentially leak memory contents by supplying a crafted AVI file. The flaw resides in gst_avi_demux_riff_parse_vprp(), where the count of video field descriptors is derived by dividing remaining buffer size by an attacker-controlled vprp->fields value rather than the struct size, causing the parser to treat more descriptors as valid than the buffer holds. User interaction is required to trigger the bug (the victim must open or stream the malicious AVI via playbin or decodebin), and the primary confirmed impact is denial of service; limited information disclosure is also possible. No public exploit or CISA KEV listing has been identified at time of analysis.
Use-After-Free vulnerabilities in the GNU linker (ld) component of binutils crash the linker process when processing crafted object or archive files during LTO-enabled linking on Red Hat Enterprise Linux systems. The flaws exist at three distinct dereference points in add_archive_element() in ld/ldmain.c, where plugin_maybe_claim() frees the BFD object but the caller retains dangling pointers that are subsequently accessed. The attack surface is confined to build-time environments, with the primary realistic threat being a supply chain attack introducing a malicious object file into CI/CD pipelines or developer build systems; no public exploit code or active exploitation has been confirmed at time of analysis.
Heap corruption via double-free in 389-ds-base's LDAP control parsing allows an unauthenticated remote attacker to crash the directory service with a single crafted BIND request. The flaw resides in `get_ldapmessage_controls_ext()`, which frees a parsed controls array when rejecting an unknown critical Session Tracking control but fails to clear the corresponding SLAPI_REQCONTROLS pblock slot - causing operation teardown to free the same pointer a second time. Affected deployments include Red Hat Directory Server 11 through 13 and the 389-ds-base package across all supported RHEL versions (6-10). No public exploit code has been identified and the vulnerability is not listed in the CISA KEV catalog; the CVSS AC:H rating reflects that reliable heap exploitation requires specific memory layout conditions rather than a trivially repeatable one-shot crash.
NULL pointer dereference in the shim application's dp.c library exposes Red Hat Enterprise Linux 7, 8, and 9 systems using UEFI Secure Boot to a local denial-of-service condition. An attacker with high local privileges and the ability to interact with the shim boot path can trigger the missing NULL pointer check, potentially disrupting the boot process. No public exploit code has been identified at time of analysis, and the low CVSS score of 3.9 reflects the constrained attack prerequisites, though the changed scope (S:C) signals that the impact crosses from the shim component into the broader boot environment.
Sensitive guest disk contents are exposed to any local user on Red Hat Enterprise Linux KVM hosts due to `qemu-img` creating new volume image files with world-readable permissions during libvirt storage clone or convert operations. Affected platforms span RHEL 6 through 10 and RHEL for Nvidia 26. No public exploit code has been identified and this vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog at time of analysis, but the CVSS C:H rating reflects full guest disk exposure to a low-privileged local attacker.
Signed integer overflow in GIMP's file-fli plugin causes application crashes when processing maliciously crafted FLI animation files, resulting in denial of service. The flaw affects GIMP as packaged on Red Hat Enterprise Linux 6 through 9, where incorrect multiplication of image width and height during buffer size calculation can overflow a signed integer, producing an invalid allocation. No public exploit code or active exploitation has been identified; impact is strictly limited to availability, with no confidentiality or integrity consequences.
Missing authorization on CleanAllRUV and Abort CleanAllRUV LDAP extended operations in 389 Directory Server (Red Hat Directory Server 11-13) allows unauthenticated remote attackers - when the default anonymous access setting is active - to manipulate replication metadata, purge changelog records, and abort administrator-initiated cleanup tasks. The affected operations are replication-maintenance primitives that bypass the authorization layer entirely (CWE-862), meaning no account or session is required under default configuration. No public exploit code or active exploitation in CISA KEV has been identified at time of analysis, but the network-accessible, zero-authentication attack surface in a widely deployed enterprise directory server makes this a notable availability and integrity risk.
Integer overflow in p11-kit's RPC message parser on 32-bit systems allows a local attacker, or any principal with access to a reachable RPC channel, to crash the p11-kit process via a heap out-of-bounds write, resulting in Denial of Service. Affected deployments span Red Hat Enterprise Linux 6 through 10, Red Hat Hardened Images, and OpenShift Container Platform 4. No public exploit code has been identified at time of analysis, and the vulnerability is not listed in the CISA KEV catalog.
SELinux label manipulation via TOCTOU race condition in the policycoreutils fixfiles script allows a local low-privileged attacker to corrupt SELinux mandatory access control labels on arbitrary system files, including security-critical targets such as /etc/shadow. The flaw affects fixfiles when run in relabel or restore mode across all supported Red Hat Enterprise Linux releases (6 through 10), Red Hat Hardened Images, and OpenShift Container Platform 4. No public exploit code or active exploitation has been identified at time of analysis, and exploitation is constrained by both a required race condition win and the need for an administrator to actively invoke fixfiles.
Persistent denial of service in dhcp-server (dhcpd) on Red Hat Enterprise Linux 6 through 9 is triggered via a crafted OMAPI lease creation request containing an overly long InfiniBand MAC address, overflowing a buffer in `print_hw_addr()` and crashing the dhcpd daemon in a way that prevents automatic recovery. The official CVSS score of 4.9 with PR:H reflects the assumption that TSIG authentication guards the OMAPI port; however, the description explicitly highlights that TSIG is optional and often absent, reducing the realistic exploitation barrier to unauthenticated network access. No confirmed active exploitation (KEV) or public proof-of-concept exists at time of analysis.
Stack-based out-of-bounds read in stunnel's s_vlog logging function allows remote unauthenticated attackers to crash the service by sending protocol inputs that generate log messages exceeding 1024 bytes via vsnprintf. The primary impact is service disruption (availability), with a limited integrity impact in corner cases where trailing newline characters in the stack buffer can be overwritten with null bytes. No public exploit code has been identified at time of analysis, and this CVE is not listed in the CISA KEV catalog.
SSRF bypass in stunnel 5.79 and earlier allows authenticated SOCKS proxy clients to circumvent intended localhost access restrictions by supplying IPv4-mapped IPv6 addresses (e.g., ::ffff:127.0.0.1) or unspecified addresses (0.0.0.0, ::) in proxy requests. Exploitation reaches loopback-bound services on the stunnel host - services deliberately isolated from external network access - potentially exposing internal APIs, administrative interfaces, or other localhost-only endpoints. No public exploit code has been identified and this vulnerability is not listed in the CISA KEV catalog at time of analysis.
Off-by-one memory corruption in popt's poptStuffArgs function allows a local low-privileged attacker to overwrite adjacent memory and potentially execute arbitrary code within any host application that unsafely processes the corrupted argument data. All supported Red Hat Enterprise Linux releases (6 through 10), Red Hat Hardened Images, and OpenShift Container Platform 4 ship the affected library. No public exploit code has been identified and no CISA KEV listing exists; exploitation requires high-complexity triggering conditions, making this a routine patch priority rather than an emergency response item.
Uninitialized heap memory disclosure in SSSD's NSS responder exposes cached directory data and heap layout to local authenticated users on RHEL 6 through 10 and OpenShift Container Platform 4. The sss_nss_protocol_fill_initgr() function pre-allocates a reply buffer sized for all group entries but fails to shrink it when groups are skipped, causing uninitialized heap bytes to be included in the response transmitted back to the requesting client. No public exploit code has been identified at time of analysis, and this is not listed in CISA KEV; however, leaked heap addresses may assist in chained attacks targeting ASLR bypass in sssd_nss.
GNU tar's incremental restore path contains a TOCTOU race condition in dumpdir 'X' rename handling, allowing a local attacker with write access to a backed-up directory to redirect file operations outside the intended extraction root during a privileged restore. Successful exploitation can result in arbitrary file creation, rename, or overwrite - enabling privilege escalation on systems running Red Hat Enterprise Linux 6 through 10 and Red Hat Hardened Images. No public exploit is identified at time of analysis, and no CISA KEV listing exists; the CVSS score of 4.4 reflects the constrained attack prerequisites including a required race window and administrator-initiated restore.
Authentication bypass in 389 Directory Server (Red Hat Directory Server 11-13) allows a network-connected user holding valid credentials for an administratively locked account to retain an authenticated LDAP session, defeating account-lock as an access-revocation control. The SASL PLAIN bind handler installs connection-level authenticated state before executing the account-lock check; when the lock check fails, only the error is returned to the client while the internal authenticated state on that connection persists unrevertd. No public exploit has been identified at time of analysis and no CISA KEV listing exists, but the real-world impact is highest in incident-response and employee-offboarding scenarios that rely on directory lock as the primary revocation mechanism.
GNU tar's --one-top-level extraction mode fails to confine hardlink targets to the designated top-level directory, allowing a crafted archive to plant hardlinks that escape the intended extraction boundary. When combined with a preexisting symbolic link already present under the working directory, an attacker who can induce a victim to extract a malicious archive may read or write files outside the intended extraction scope on systems running affected RHEL versions (6 through 10) and Red Hat Hardened Images. No public exploit has been identified at time of analysis, and exploitation requires both user interaction and a specific environmental pre-condition, keeping real-world risk moderate despite GNU tar's ubiquitous deployment.
Out-of-bounds read in SSSD's NSS responder allows a local user with standard privileges to crash the SSSD process by sending a crafted GETHOSTBYADDR request, causing system-wide denial of authentication and name resolution services. The vulnerable function `sss_nss_protocol_parse_addr()` fails to validate the `addrlen` field against the actual remaining packet body size, enabling heap over-read and process termination. No public exploit code or active exploitation has been identified at time of analysis, and this vulnerability is not listed in CISA KEV.
Heap-based out-of-bounds write in GIMP's PAA (Paint Shop Pro Array) file format plugin allows a remote attacker to potentially execute arbitrary code on a victim's system by tricking the user into opening a specially crafted PAA image. The flaw resides in the decode_lzss() decompression function, which writes data beyond the bounds of the allocated heap buffer, enabling heap metadata corruption. No public exploit or CISA KEV listing exists at time of analysis, but the RCE-tagged impact and buffer-write primitive make this a higher-severity risk than the CVSS 5.5 score suggests; the CVSS impact metrics reflect only availability (A:H) while the description and tags indicate arbitrary code execution potential - a notable discrepancy to investigate.
Stack-based buffer overflow in GIMP's file-png plugin on Red Hat Enterprise Linux 6 through 9 causes the application to crash when a user opens a crafted Animated PNG (APNG) image containing an oversized tRNS chunk, resulting in a Denial of Service limited to the affected user session. Exploitation requires local file access and active user interaction - a remote attacker would rely on social engineering (phishing, malicious download) to deliver the file. No active exploitation has been confirmed by CISA KEV, no public exploit code is identified at time of analysis, and EPSS data is unavailable in source intelligence.
Denial of service in Samba's Kerberos KDC password change (kpasswd) service allows authenticated remote attackers to crash the KDC process by submitting specially crafted, malformed ASN.1-encoded password change requests. The server miscalculates the structure size of the incoming request and reads up to six bytes beyond the end of the allocated buffer; when this read strikes unmapped memory, the KDC process terminates rather than simply failing gracefully. No public exploit has been identified and no CISA KEV listing exists, but the disruption of a KDC in an Active Directory or Samba domain environment carries significant operational impact since authentication for the entire domain depends on KDC availability.
Samba's internal DNS server inserts unauthenticated TKEY registration requests into the TKEY name cache before rejecting them, allowing a remote unauthenticated attacker to exhaust the cache by flooding it with arbitrary TKEY names. Eviction of legitimate cache entries blocks TSIG-authenticated DNS query processing, producing a targeted denial of service against Active Directory environments relying on Samba's built-in DNS backend. No public exploit code or CISA KEV listing has been identified at time of analysis; a vendor patch is available from both Samba upstream and Red Hat.
Server-side request forgery in Dogtag PKI's ACME responder enables unauthenticated ACME account holders to direct the certificate server to make arbitrary HTTP GET requests to internal network addresses. The validator incorrectly accepts IP address literals as valid DNS identifiers and follows HTTP redirects without enforcing RFC-compliant public-address filtering, allowing internal network reconnaissance. When the InMemory database backend is in use, the response body returned by internal services is exposed to the attacker through ACME challenge error messages, compounding the confidentiality impact. No public exploit code or active exploitation has been identified at time of analysis.
Path traversal in the Performance Co-Pilot (PCP) pmproxy logger servlet on Red Hat Enterprise Linux 6 through 10 and OpenShift Container Platform 4 permits unauthenticated remote attackers to create arbitrary files and directories on the host filesystem by supplying a crafted hostname value in requests to the service. The primitive is write-only - no file contents can be read - but an attacker can abuse it to corrupt directory structures or exhaust disk space, leading to denial of service. No public exploit code has been identified at time of analysis and the vulnerability is not listed in the CISA KEV catalog.
Remote unauthenticated denial of service and memory disclosure in the Performance Co-Pilot (PCP) pmproxy service affects Red Hat Enterprise Linux 6 through 10 and OpenShift Container Platform 4. An out-of-bounds read (CWE-125) in the pmLogLoadInDom() function can be triggered by a specially crafted network request, causing the pmproxy process to crash and potentially leaking sensitive data from process memory. No public exploit code has been identified at time of analysis, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.
Out-of-bounds heap read in GNU Binutils linker when processing 32-bit XCOFF files allows local attackers to disclose heap memory and cause denial of service. Affects Red Hat Enterprise Linux 6 through 10, Hardened Images, and OpenShift Container Platform 4. No public exploit or active exploitation identified at time of analysis; EPSS data unavailable.
Authorization bypass in Red Hat Certificate System's CA renewal path allows an authenticated user to renew a certificate belonging to a different realm without the required realm-based authorization check. Affects versions 9, 10, and 11 of the Certificate System on Red Hat Enterprise Linux 6 through 10. No evidence of active exploitation or public exploit code exists at the time of analysis, and EPSS probability is low (0.21%).
Local information disclosure in accountsservice on Red Hat Enterprise Linux allows systemd-homed users to read arbitrary files via the SetIconFile handler. A proof-of-concept exists, but exploitation requires a local account managed by systemd-homed, limiting impact
Out-of-bounds heap read in gdk-pixbuf's ICO parser exposes heap memory content through rendered image output, affecting Red Hat Enterprise Linux 6 through 10. When processing a crafted ICO file whose pixel indices exceed the defined palette size, the library reads beyond the palette array boundary - heap bytes are treated as palette entries and rendered as RGB pixel values in the output image, enabling an attacker to extract heap content by analyzing the rendered result. No public exploit has been identified at time of analysis and the vulnerability is not listed in CISA KEV, but server-side image processing pipelines that return rendered output to untrusted callers represent a realistic exposure path.
Format string vulnerability in GNU nano's multi-buffer error message handling allows a local low-privileged attacker to cause stack information disclosure, denial of service via crash, or potentially achieve arbitrary memory writes. The flaw (CWE-134) is triggered when a user opens multiple files at startup, one of which carries a specially crafted name containing printf format specifiers and another triggers an ALERT-level error - causing nano to misinterpret the filename as a format string. Reported by Red Hat and scoped to RHEL 6 through 10 and OpenShift Container Platform 4, no public exploit or CISA KEV listing exists at time of analysis.
Symlink-following vulnerability (CWE-59) in systemd-tmpfiles allows a local, low-privileged user to redirect privileged file write operations to an attacker-controlled path on affected Red Hat Enterprise Linux systems. The flaw resides in the path resolution logic within chase.c, where a safety check incorrectly treats all transitions away from the root user as inherently safe - failing to detect attacker-placed symlinks at tmpfiles.d target path components. Exploitation is constrained by high attack complexity requiring a specific non-default tmpfiles.d configuration, and no public exploit code or CISA KEV listing has been identified at time of analysis.
Heap buffer overflow in Red Hat Directory Server (389-ds-base) exposes LDAP services to remote unauthenticated denial of service or potential arbitrary memory write via malformed DN input. When a Distinguished Name containing a legacy-quoted value is processed, the server fails to close the associated heap allocation, permitting a subsequent operation to reference the same memory pointer - a classic heap confusion primitive. No public exploit has been identified at time of analysis, and this vulnerability is not listed in CISA KEV, though the network-accessible unauthenticated attack surface warrants prompt patching for any externally reachable Directory Server deployment.
Off-by-one heap out-of-bounds read in the BlueZ SBC (Sub-Band Coding) frame decoder allows a Bluetooth-adjacent unauthenticated attacker to leak a single byte of heap memory by streaming a crafted audio payload. Red Hat Enterprise Linux 7 through 10 are confirmed affected via the bundled sbc library. No public exploit code exists and this vulnerability is not listed in CISA KEV, making active exploitation unlikely; the impact is constrained to minor information disclosure of a single heap byte.
Unvalidated chown in Samba's pam_winbind module allows a local user with narrow sudo delegation to transfer ownership of the root filesystem directory to a system account, causing system-wide denial of service on Red Hat Enterprise Linux 6 through 10. When mkhomedir is enabled and a system account has its home directory set to '/', any PAM-triggered authentication event run as that account via sudo invokes the chown without path sanitization. The resulting ownership change breaks SSH, sudo, and package-manager functionality, though the 0555 permissions on RHEL prevent write access escalation, confining the impact to high-severity availability loss. No public exploit or CISA KEV listing is identified at time of analysis.
Out-of-bounds read in libsoup's multipart processing exposes applications on Red Hat Enterprise Linux 6 through 10 to remote denial-of-service or partial memory disclosure. The flaw resides in soup_multipart_input_stream_read_headers() where oversized or malformed multipart boundary strings are not adequately size-validated, allowing an attacker to cause the stream reader to exceed its allocated buffer. A proof-of-concept exists per SSVC data, the attack is rated automatable, and no active exploitation is confirmed in CISA KEV - placing this in a monitored-but-actionable risk tier rather than an emergency response category.
Memory leak in libsoup's HTTP/2 implementation allows a remote, unauthenticated attacker to incrementally exhaust heap memory and crash the affected application through a sustained out-of-memory condition. Affected deployments include any application linking libsoup on Red Hat Enterprise Linux 6 through 10 that handles HTTP/2 connections from untrusted peers. No public exploit code has been identified and CISA has not listed this in KEV; however, the network-accessible attack surface with no authentication requirement makes it relevant for internet-facing services using libsoup. Notably, the provided CVSS vector (C:H/I:N/A:N) is internally inconsistent with the DoS-only description - the correct impact metrics should reflect Availability, not Confidentiality, and this discrepancy is flagged in the risk assessment.
Timing side-channel exposure in Red Hat Directory Server's PBKDF2-SHA256 password verification allows a remote unauthenticated attacker to send repeated LDAP bind requests and statistically infer partial hash information by measuring response-time differences caused by non-constant-time memcmp() comparisons. Affected deployments span Red Hat Directory Server 11 through 13 and the 389-ds-base package shipped across RHEL 6 through 10. No public exploit identified at time of analysis, and practical exploitation is acknowledged to be extremely difficult due to the computational overhead inherent in PBKDF2 key stretching, which substantially degrades the timing signal.
Out-of-bounds heap read in GIMP's TIM image loader is triggered when a user opens a crafted 4bpp TIM image that is promoted to an RGBA layer, causing the file-tim plug-in to allocate an undersized row buffer and then process it with the larger RGBA row size. The result is disclosure of adjacent heap memory into the decoded image and a possible plug-in crash, with exploitation requiring local access and victim user interaction (CVSS 4.4, CWE-125). No public exploit is identified at time of analysis, and impact is bounded to partial confidentiality loss and availability loss rather than code execution.
Deleted or deprovisioned users can retain authorization on hosts running SSSD with the LDAP access provider when ldap_access_order includes ppolicy or lockout, because a user lookup that returns zero results trips a fail-open path that reports success and caches an allow decision. A remote attacker who already holds valid account context on the SSSD-managed host (authenticated, PR:L) can exploit this after offboarding to keep reading information and make limited modifications, giving low confidentiality and integrity impact (CVSS 3.1 5.4 Medium). The flaw only affects non-default access configurations that explicitly enable ppolicy/lockout ordering, and no public exploit identified at time of analysis.
A stack buffer overflow in libstoragemgmt's SCSI VPD page 0x80 serial-number parser lets an attacker who controls a local or virtual storage device crash or destabilize the host process that enumerates that device, yielding a denial of service with no confidentiality or integrity impact (CVSS 3.1: AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H, base 5.5). Exploitation requires low privileges on the host (PR:L, so an authenticated/local actor) plus the ability to attach or present a device, and it only triggers when the affected process actually queries the device's serial number - the vector is local, not remotely reachable over a network. No public exploit code was identified at time of analysis and there is no confirmed active exploitation (CISA KEV); the practical risk is concentrated in environments that enumerate untrusted or attacker-attachable storage, such as multi-tenant virtualization or hosts that accept hostile removable, iSCSI, or hypervisor-presented disks.
Isochronous OUT stream handling in usbredir can leave a stream's single transfer buffer permanently unsubmitted when a transfer count of 1 is used, which defeats the bounds check in usbredirhost_iso_packet() and lets a usbredir peer write beyond the end of the packet descriptor array on every subsequent isochronous packet. The flaw is an out-of-bounds write (CWE-787) affecting usbredir as shipped in Red Hat Enterprise Linux 6 through 10, and the published CVSS:3.1 vector (AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H, score 4.1) reflects a local, high-complexity, privileged trigger path whose dominant impact is availability loss rather than code execution. No public exploit identified at time of analysis, and the bug is not listed as confirmed actively exploited (CISA KEV); the realistic risk is materially lower than the raw memory-corruption classification suggests.
Stack-based buffer overflow in fetchmail when built with NTLM support allows a malicious or compromised mail server to trigger memory corruption by sending a crafted NTLM Type 2 challenge, potentially leading to remote code execution, authentication failure, or process termination. Exploitation requires fetchmail to be built with NTLM and configured to authenticate via NTLM against an attacker-controlled or man-in-the-middle'd server; no public exploit code or active exploitation has been identified. The flaw carries a CVSS score of 8.1 with high confidentiality, integrity, and availability impact, though reliable RCE is limited by stack-frame layout and modern memory hardening (stack canaries, ASLR, FORTIFY_SOURCE) on RHEL builds.
An integer-wraparound in Cockpit's do_lastlog() login-accounting routine on ILP32 (32-bit) builds allows a low-privileged but authenticated local user holding an administrator-provisioned abnormally large UID to read and modify other users' lastlog records, producing low confidentiality and low integrity impact (CVSS 3.1 base 3.6, AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N). Exploitation requires a 32-bit build, a deliberately created large-UID account, and local access to the host; 64-bit LP64 builds do not overflow and are unaffected, and no public exploit code has been identified at time of analysis.
Denial of service in Red Hat's cockpit-ws web service lets a remote, unauthenticated attacker crash the process by sending a request to the exact configured WebService.UrlRoot prefix without a trailing slash, taking the Cockpit management interface offline. The flaw is only reachable on installations that have explicitly set the non-default WebService.UrlRoot option; default deployments are unaffected, and impact is availability-only with no data exposure or code execution. There is no public exploit identified at time of analysis, no confirmed active exploitation (not in CISA KEV), and exploitation carries a high-attack-complexity rating (AC:H) because the attacker must know and target the exact URL-root path.
Rendering a crafted PDF through Poppler's Splash backend can pin a CPU core at 100% for an extended attacker-controlled duration. The flaw in SplashOutputDev::tilingPatternFill computes an excessive loop count from tiling-pattern geometry near the int32 limit, without allocating memory. This availability-only issue affects Red Hat Enterprise Linux 6, 7, 8, 9, and 10, and Red Hat Hardened Images, and exploitation requires a victim to open a malicious PDF (UI:R, AV:L, PR:N - no privileges required). No public exploit identified at time of analysis, and no confirmed active exploitation.
A NULL pointer dereference in libxml2's XML catalog parser allows a crash-induced denial of service when a catalog file contains a `nextCatalog` element missing its mandatory `catalog` attribute. Affected deployments are those in which an application linked against libxml2 parses an attacker-influenced catalog - Red Hat Enterprise Linux 6 through 10, Red Hat Hardened Images, and OpenShift Container Platform 4 carry vulnerable libxml2 packages per the supplied CPE data. The attack vector is local (AV:L) and requires user interaction (UI:R) to induce parsing of the crafted file, with no authentication required (PR:N); impact is limited to availability (C:N/I:N/A:H) and there is no public exploit identified at time of analysis. Exploitation is constrained by the need for the target to actually perform catalog parsing on untrusted input and by resilient/restartable services absorbing the crash.
CPU exhaustion denial of service in jwcrypto's JWK.import_key() allows a remote unauthenticated attacker to supply a crafted JWK with an arbitrarily large key_ops array and trigger O(n²) duplicate-detection work, consuming CPU proportional to the square of the array length. Any Python application that passes externally-supplied JWK material to this API - via ECDH-ES key agreement, OIDC dynamic client registration, DPoP proof parsing, or ACME account key registration - is vulnerable. No public exploit or active exploitation (CISA KEV) has been identified at time of analysis; CVSS rates this at 5.9 (Medium) with AC:H reflecting the requirement that attacker-controlled key material must reach the vulnerable code path.
GNOME Shell fails to validate the declared dimensions of icons returned by a remote search provider over D-Bus against the actual icon data buffer, producing an out-of-bounds read when an oversized size is supplied. A malicious or compromised search provider registered in a user's session can crash the shell — terminating the desktop session — and may leak fragments of adjacent shell memory. Rated CVSS 6.1 (AV:L/UI:R/C:L/A:H) by Red Hat; no public exploit code or CISA KEV entry was identified at time of analysis, so exploitation currently requires a locally present hostile search provider rather than remote access.
An out-of-bounds read in the SSSD NSS responder allows any local user who can reach the responder's UNIX socket to crash the process by sending a specially crafted service lookup request, degrading local name/service resolution on the host. Only SSSD deployments shipped with Red Hat Enterprise Linux 6 through 10 and OpenShift Container Platform 4 nodes are listed as affected by the vendor CPE data, and the flaw requires local socket access rather than network reach. There is no public exploit code and no CISA KEV listing; SSVC records exploitation as 'none' and the issue carries a modest CVSS 3.1 base score of 4.0 (availability impact only).
Denial of service in multipathd allows a local attacker with access to the UNIX control socket to permanently block the daemon's listener thread by sending valid commands and then refusing to read the replies. This renders legitimate IPC operations - such as multipath path queries and storage management commands - unable to complete until the daemon is restarted. Red Hat, the reporting source, explicitly confirms the issue is bounded to availability impact only: no privilege escalation, no code execution, and no confidentiality or integrity loss. No public exploit code has been identified at time of analysis.
Heap buffer overflow in the libtiff `tiff2pdf` utility allows local attackers to cause severe memory corruption and application crashes by supplying a crafted BigTIFF file. The root cause is an integer truncation: a 64-bit `StripByteCounts` value is silently narrowed to 32 bits, producing an undersized heap allocation that a subsequent memory copy overflows. Red Hat has issued advisory RHSA-2026:53467 and an upstream fix is available via libtiff GitLab merge request #729; no public exploit or active exploitation has been identified at time of analysis.
Symlink-following in libvirt's qemuTPMEmulatorPrepareHost() allows a local attacker with access to the swtpm service account to redirect a path-based chown() call - executed by libvirtd running as root - to transfer ownership of any arbitrary file on the system to the swtpm user. This affects libvirt on Red Hat Enterprise Linux 6 through 10. With ownership of a sensitive file such as /etc/shadow or a cron directory transferred to swtpm, the attacker gains a privilege escalation primitive beyond the swtpm account boundary. No public exploit or active exploitation has been identified at time of analysis.
Integer overflow in GStreamer's gst-plugins-good isomp4 plugin exposes adjacent heap memory when parsing CEA-608 closed-caption data embedded in specially crafted MP4 or MOV files. The 32-bit unsigned arithmetic wraparound bypasses a bounds check, enabling an out-of-bounds heap read of up to 244 bytes that is forwarded into downstream caption output - leaking process memory to an attacker who controls caption rendering output. Affected platforms include Red Hat Enterprise Linux 6 through 10; no public exploit has been identified at time of analysis, and no active exploitation is confirmed.
JavaScript injection in Evolution email client allows a remote, unauthenticated attacker to execute arbitrary JavaScript within the mail-viewing context by sending a specially crafted HTML email containing a spoofed vCard control. When the victim clicks the vCard control, Evolution's trusted JavaScript handler incorrectly places an attacker-controlled javascript: URL into an iframe's src attribute, bypassing Evolution's own script-execution protections for email content. The vulnerability is classified CWE-84 (improper neutralization of encoded URI schemes), and exploitation requires one user interaction gesture - clicking the vCard element - making it realistic against any Evolution user on a RHEL or GNOME desktop. No public exploit code or CISA KEV listing has been identified at time of analysis.
Case-insensitive username comparisons in two code paths of the CUPS scheduler - printer ACL validation and private-attribute filtering - allow an authenticated adjacent-network attacker to bypass username-based access controls in configurations that rely on those ACLs. The bypass exposes private print attributes to users who should be excluded by ACL policy. Affected deployments span Red Hat Enterprise Linux 6 through 10, Red Hat Hardened Images, and OpenShift Container Platform 4. No public exploit or active exploitation has been identified at time of analysis, consistent with the low CVSS base score of 3.0.
Heap out-of-bounds read in CUPS's cupsUTF32ToUTF8() transcoding function exposes partial daemon heap memory to adjacent-network attackers without authentication. The vulnerable code path is reachable via SNMP supply-description parsing, meaning any attacker who can spoof or inject crafted SNMP responses on the same network segment as a CUPS host can trigger the read and potentially leak heap contents from the printing daemon. No active exploitation has been identified, and the adjacent-network attack vector significantly limits the exposure surface.
Symlink-following race condition in GLib2's g_file_replace() allows a local attacker with write access to the destination directory to redirect privileged file writes to arbitrary files. When the G_FILE_CREATE_REPLACE_DESTINATION flag is set and creation of the .goutputstream-XXXXXX temporary file fails, GLib2 unlinks the destination and then recreates it without O_EXCL (exclusive creation) or symlink-safe open semantics, opening a TOCTOU race window. An attacker who wins this race by placing a symlink at the destination path can cause any process using this code path - potentially running with elevated privileges - to overwrite files the attacker cannot directly modify. No public exploit has been identified at time of analysis.
Flatpak's `org.freedesktop.Flatpak.SystemHelper` D-Bus service contains a TOCTOU race condition in the `Deploy()` function where a privileged `chmod` executes before OSTree repository validation completes, allowing a local low-privileged attacker to redirect symlinks to arbitrary system files within that timing window. A successful exploit can yield high-confidentiality impact (reading privileged files) and limited integrity and availability impact (CVSS C:H/I:L/A:L), as the unguarded chmod can be inherited by attacker-controlled symlink targets. No public exploit code or CISA KEV listing has been identified at time of analysis, and the High attack complexity (AC:H) reflects the precision timing required to win the race.
HTTP/2 flow-control window mismanagement in libsoup (GNOME's HTTP client/server library) allows a malicious HTTP/2 server to abort a connecting client process or crash its HTTP/2 session. When the client sends a request body sourced from a non-pollable GInputStream, libsoup buffers the data before transmission; a server that then shrinks SETTINGS_INITIAL_WINDOW_SIZE causes the client to copy the full pre-buffered payload into a now-undersized DATA callback without a runtime bounds check, triggering a reachable assertion abort (CWE-617). No public exploit has been identified at time of analysis, and the high-complexity timing requirement constrains practical exploitation.
Integer overflow in Corosync's membership commit token processing crashes the daemon on 32-bit cluster nodes, enabling a denial-of-service attack from any adjacent network host. The CWE-190 flaw causes the length validation to be bypassed on 32-bit systems where arithmetic wraps before the bounds check is applied, resulting in an out-of-bounds memory access that kills the Corosync process. Modern 64-bit deployments of the same packages are explicitly not affected, substantially narrowing real-world exposure despite the CVSS 6.5 rating; no public exploit code or CISA KEV listing exists at time of analysis.
Key-ID (kid) bypass in the jwcrypto Python JOSE library allows an attacker who holds any valid key within a JWK set to forge a General JSON Serialization JWS that satisfies verification for a different kid, effectively impersonating another tenant, user, or service. Affected deployments include Red Hat Ansible Automation Platform 2, RHEL 7-10, Red Hat OpenShift AI (RHOAI), and Red Hat OpenStack Platform 16.2, wherever jwcrypto performs JWS signature verification with kid-based authorization. No public exploit or CISA KEV listing has been identified at time of analysis, and the EPSS score is not provided, but the integrity impact is high for multi-tenant architectures.
Stack exhaustion in gfs2-utils's metawalk.c metadata walk code allows a local attacker to cause denial of service by supplying a crafted GFS2 filesystem image containing a maliciously large inode height value that drives unbounded alloca() calls. Affected systems include Red Hat Enterprise Linux 7, 8, and 9 with gfs2-utils installed; the CVSS 4.7 medium rating reflects a local, high-complexity, user-interaction-required attack path with no confidentiality or integrity impact. No public exploit code or active exploitation has been identified at time of analysis.
Heap out-of-bounds read in gfs2-utils enables memory disclosure and potential crashes when parsing crafted GFS2 filesystem images. The `ea_num_ptrs` field embedded in on-disk extended attribute metadata is consumed without validating it against the available buffer boundary, allowing an attacker who controls a filesystem image to trigger a heap over-read. Affected across Red Hat Enterprise Linux 7, 8, and 9; no public exploit is identified at time of analysis, and the local, user-interaction-dependent attack vector substantially limits practical exploitation.
Stack exhaustion in gfs2-utils allows an attacker who can deliver a crafted GFS2 filesystem image to crash fsck.gfs2, gfs2_edit, or savemeta on Red Hat Enterprise Linux 7, 8, and 9. The root cause is unbounded use of alloca() in metawalk.c's hash table traversal, where the allocation size is derived exponentially from the on-disk di_depth field with no upper-bound check, so a sufficiently large di_depth value causes the process stack to be fully consumed. The impact is limited to denial of service of the affected utility; no public exploit has been identified at time of analysis, and EPSS data is not available in the provided intelligence.
Crash of the gvfsd-mtp daemon in gvfs is achievable by anyone who can connect a malicious USB MTP device to a target Linux system. The do_read() function in gvfsbackendmtp.c accepts the byte-count reported by the device at face value and passes it uncapped to memcpy(), causing an out-of-bounds read that triggers a segmentation fault when the device deliberately over-reports its response length. The vulnerability affects gvfs as packaged across Red Hat Enterprise Linux 6 through 10; no public exploit has been identified and exploitation is constrained by physical proximity.
Heap buffer overflow in the gvfs AFP (Apple Filing Protocol) backend allows a malicious AFP server to crash the gvfsd-afp process on connecting clients, resulting in denial of service. When a client mounts an AFP share, the DSI (Data Stream Interface) read path accepts a server-supplied length value without validating it against the pre-allocated reply buffer, enabling the server to write past buffer boundaries. This affects RHEL 6 through 10 and requires user interaction to mount a malicious share; no public exploit or CISA KEV listing has been identified at time of analysis.
Uninitialized heap memory disclosure in gvfs's SFTP backend enables a malicious SFTP server to deterministically defeat ASLR on client systems running RHEL 6 through 10. When a user mounts a crafted SFTP share, the read_string() parser allocates a buffer for the FXP_HANDLE response but does not verify that the buffer is fully populated; the client subsequently echoes the uninitialized remainder - containing heap base pointers and the libgio load address - back to the attacker on every subsequent file-handle request. No public exploit has been identified at time of analysis, and the issue does not appear in CISA KEV, but the ASLR bypass it achieves is a high-value precursor for chained memory-corruption attacks against gvfsd-sftp.
Unauthenticated enumeration of internal PKI topology is possible in Red Hat Certificate System 9 through an unprotected REST endpoint. Any network-accessible client can issue GET /ca/rest/securityDomain/hosts and receive a structured inventory of all participating CA subsystem hosts, their roles, and security domain membership - without presenting credentials, a client certificate, or a session token. While the direct CVSS impact is rated medium (5.3), the real-world significance lies in enabling precise reconnaissance of internal PKI infrastructure that could facilitate targeted follow-on attacks against specific subsystems. No active exploitation is confirmed and no public exploit code has been identified at time of analysis.
Unauthenticated network attackers can elicit Java stack traces from Red Hat IdM's Dogtag CA REST enrollment endpoint (POST /ca/rest/certrequests) by submitting malformed requests, causing HTTP 500 responses that expose internal implementation details under CWE-209. The same error path simultaneously amplifies the CA debug log with large multi-line stack traces, creating a log-fill resource exhaustion vector that drives disk growth and I/O contention on affected RHEL 6 through 10 deployments. No public exploit has been identified at time of analysis, but the attack requires no authentication and low complexity, making it accessible to unskilled opportunistic attackers targeting IdM infrastructure.
Heap metadata corruption in the popt command-line parsing library's `poptConfigFileToString` function can be triggered by a local, low-privileged attacker who supplies specially crafted configuration file content to an affected host. Successful exploitation causes the consuming process to crash, resulting in denial of service. CVSS 2.5 (Low) reflects the strictly local, high-complexity exploitation path with no confidentiality or integrity impact; no public exploit code or active exploitation (CISA KEV) is known at time of analysis.
Heap out-of-bounds read and stack out-of-bounds access in GIMP's file-psd plugin allow an attacker to crash the application or disclose limited memory contents by convincing a user to open a specially crafted PSD image. The flaw affects GIMP as shipped in Red Hat Enterprise Linux 6 through 9 and stems from missing validation of the channel-count parameter during PSD parsing. No active exploitation has been identified; the attack requires local file delivery and deliberate user interaction, significantly constraining real-world risk.
Heap out-of-bounds read in GIMP's file-pvr plugin exposes users of Red Hat Enterprise Linux 6 through 9 to application crashes and limited heap memory disclosure when opening a crafted PVR image file. The VQ (Vector Quantization) compressed-texture decoder omits mandatory bounds validation, allowing a malicious image to read beyond allocated heap regions. Impact is primarily denial of service via crash, with a secondary low-severity information disclosure path; no public exploit code and no CISA KEV listing are associated with this issue at time of analysis.
Heap out-of-bounds read in GIMP's file-ico plugin allows a local attacker to crash GIMP or leak limited heap memory contents by delivering a specially crafted ICO image file to a victim user. Affected packages span Red Hat Enterprise Linux 6 through 9. No public exploit code or CISA KEV listing exists at time of analysis, but the user-interaction requirement (opening a malicious file) is the primary delivery mechanism and a realistic social-engineering target in image-processing workflows.
Out-of-bounds memory write in libsolv crashes RPM-based package manager tools (dnf, yum, zypper) when processing a corrupted or specially crafted .solv repository cache file. The root cause is an absent array-index bounds check on directory-id values read from compressed filelist data during .solv file rewriting - but because the out-of-bounds write stores only a fixed, non-attacker-controlled value, the vendor explicitly rules out arbitrary code execution, confining impact to denial of service. No public exploit has been identified and no active exploitation is confirmed; note that the 'RCE' metadata tag conflicts directly with the description and appears to be erroneous.
Heap out-of-bounds read in GIMP's file-iff plugin allows a local attacker to crash the application or disclose limited heap memory contents by delivering a specially crafted IFF/ILBM image file. The flaw stems from missing validation of HAM row size when the number of color planes (nPlanes) is zero, causing a size mismatch that bypasses memory bounds checking. No active exploitation has been confirmed (not in CISA KEV) and no public exploit code has been identified at time of analysis.
Out-of-bounds write in gdk-pixbuf's JPEG decoder affects any application on Red Hat Enterprise Linux 6 through 10 that renders JPEG images containing chunked ICC profile markers. When ICC profile parsing encounters an error, stale size metadata persists after the profile buffer is freed; a subsequent allocation within the same decode operation then writes beyond buffer boundaries, crashing the application. No active exploitation has been identified (no CISA KEV listing), and no public exploit code is known at time of analysis, but the availability-only impact and user-interaction requirement make this a realistic denial-of-service risk in desktop and server image-processing contexts.
Stack-based denial of service in GIMP's Seattle FilmWorks (SFW) image plugin crashes the application when a crafted SFW file triggers an unbounded variable-length array allocation on the stack. The flaw affects all GIMP versions per the GNOME CPE string and is confirmed across Red Hat Enterprise Linux 6 through 9. An attacker who can deliver a malicious SFW file to a user can reliably crash the GIMP process with no code execution or data exposure; no public exploit has been identified at time of analysis.
Heap out-of-bounds read in GIMP's file-xwd plugin allows a crafted XWD image file to trigger an application crash or leak partial heap memory contents into the rendered image output. Users running GIMP on Red Hat Enterprise Linux 6 through 9 are affected when they open a malicious XWD file; the plugin fails to cross-validate image width and bytes-per-line parameters against the allocated buffer size, permitting an out-of-bounds read. No public exploit is identified at time of analysis and the vulnerability is not listed in CISA KEV, placing real-world urgency in the low-to-moderate range.
Resource exhaustion via crafted SASL UNBIND in 389 Directory Server (389-ds-base) allows a remote authenticated attacker to stall connections and deny LDAP service to legitimate users. Affected deployments span Red Hat Directory Server 11, 12, and 13, plus 389-ds-base as packaged across RHEL 6 through 10. No public exploit code or CISA KEV listing has been identified at time of analysis, though the CVSS 6.5 rating (AV:N/AC:L/PR:L) indicates low-complexity network exploitation requiring only a low-privilege LDAP bind - a realistic bar in any environment with shared directory users.
Stack buffer overflow in file-roller's archive extraction path causes denial of service when a victim opens or extracts a crafted 7z or RAR archive containing an excessively long file path entry. The unbounded string copy in the progress-line parsing routine overwrites a fixed-size stack buffer, crashing the application with no confidentiality or integrity impact. No public exploit code or CISA KEV listing has been identified at time of analysis, and exploitation is gated entirely on user interaction with a malicious archive.
Stack exhaustion and a bounded memory over-read in GIMP's file-pix (ESM) plugin allow a crafted PIX image to crash the application and leak 21 bytes of stack memory into an intermediate file. Users running GIMP on Red Hat Enterprise Linux 6 through 9 are affected when opening untrusted PIX format images. No public exploit code and no active exploitation (CISA KEV) have been identified at time of analysis, though the DoS impact is reliable and the delivery vector - a malicious image file - is realistic for desktop users.
Improper certificate validation in JSS (Java Security Services) allows the JSSTrustManager class to accept CA certificates from the NSS database that lack TRUSTED_CA trust flags, meaning certificates never explicitly designated as trust anchors can still be used to anchor TLS chains. In non-default deployments where certificate revocation checking has been disabled, this creates a viable path for a man-in-the-middle attacker to forge certificates accepted by PKI client connections, with high confidentiality and low integrity impact. No public exploit has been identified at time of analysis, and the AC:H CVSS rating reflects the meaningful attack complexity - MITM positioning plus a specific non-default configuration must both be present.
Denial of service in FreeIPA's ipa-enrollment SLAPI plugin allows any authenticated LDAP client to crash the 389 Directory Server by sending a malformed extended operation. The flaw (CWE-476, null pointer dereference) is triggered by omitting the request value for the JOIN_OID in the ipa-enrollment extended operation, causing the server to dereference a null pointer and crash. No public exploit or active exploitation has been identified at time of analysis; however, the low attack complexity and network-accessible vector make this a credible threat against any RHEL Identity Management deployment.
Resource exhaustion in FreeIPA's OTP key processing path allows any low-privilege authenticated domain user to degrade the IPA authentication service. By submitting an oversized One-Time Password key, the user triggers an unbounded decode/re-encode cycle (CWE-770) that consumes excessive CPU and memory, degrading availability for all dependent systems and users. No public exploit code exists at time of analysis, and this CVE is not listed in CISA KEV; however, the AV:N/PR:L CVSS vector means any valid domain account on a network-accessible FreeIPA instance is sufficient to trigger the condition.
Integer truncation in libsoup's SoupServer Range-header comparator silently drops byte ranges from HTTP 206 Partial Content responses when the target resource exceeds approximately 2 GB. The sort_ranges() function in soup-message-headers.c narrows a 64-bit offset subtraction to a 32-bit int return value, inverting the comparator sign whenever offsets differ by more than INT_MAX, causing incorrect range sorting and silent omission of content. No public exploit code or CISA KEV listing has been identified at time of analysis; exploitation requires network access to a SoupServer instance serving files larger than ~2 GB.
Out-of-bounds memory read in BlueZ's AVRCP implementation allows a physically proximate attacker - within Bluetooth radio range - to crash the bluetoothd daemon and potentially leak heap memory contents by sending a malformed GetFolderItems response. The flaw resides in parse_media_element() and parse_media_folder(), which fail to validate packet length fields before reading. Exploitation requires the victim to interactively pair with the attacker-controlled malicious Bluetooth device. No public exploit code or CISA KEV listing has been identified at time of analysis.
Privileged file corruption and denial of service in sblim-sfcb (Small Footprint CIM Broker) on Red Hat Enterprise Linux 6 through 10 is achievable by a local low-privileged attacker exploiting a symlink-based race condition during privileged instance migration. The SFCB daemon writes to a temporary file in /tmp without atomic safety guarantees, allowing an attacker who repeatedly races a symbolic link into place to redirect that privileged write to an arbitrary file path. No public exploit has been identified at time of analysis, and this CVE is not listed in the CISA KEV catalog.
Out-of-bounds memory read in sblim-sfcb's provider-manager IPC message parser allows a local low-privileged attacker to crash the provider-manager process, causing denial of service and potentially leaking limited adjacent memory contents. The vulnerability stems from unsafe deserialization of attacker-controlled IPC messages without adequate boundary validation, affecting sblim-sfcb as shipped across Red Hat Enterprise Linux versions 6 through 10. No public exploit code or active exploitation has been identified at time of analysis, and exploitation is constrained to local system access.
Insecure temporary file creation in sblim-cmpi-base provider registration scripts exposes Red Hat Enterprise Linux 6 through 10 to a local symlink attack, enabling a low-privileged user to redirect privileged file writes to arbitrary paths. When registration scripts execute under elevated (root) privileges, an attacker who pre-positions a symlink in a world-writable directory can cause those scripts to overwrite root-owned files, disrupting system services or integrity. No public exploit code has been identified at time of analysis, and exploitation requires both local access and favorable timing, but the integrity and availability impact on a compromised host are rated high by the vendor.
Integer underflow in GStreamer's avidemux element allows a remote unauthenticated attacker to trigger heap out-of-bounds read and write, heap memory disclosure, and application crash by delivering a crafted AVI file containing a malformed FUJIFILM strd chunk. The gst_avi_demux_parse_strd() function decrements its remaining-length counter by fixed offsets without bounds checking, causing unsigned integer wraparound for payloads of exactly 106 or 107 bytes. Because avidemux is auto-plugged by GStreamer's high-level components (playbin, decodebin, gst-discoverer), any application that opens or previews a media file - including GNOME Files, Nautilus, Totem, and many others - can trigger the vulnerability without user awareness. No public exploit or active exploitation (CISA KEV) has been identified at time of analysis; a vendor-released patch is available in gst-plugins-good 1.28.6.
Out-of-bounds read in GStreamer's avidemux plugin (gst-plugins-good) allows a remote, unauthenticated attacker to crash media-processing applications and potentially leak memory contents by supplying a crafted AVI file. The flaw resides in gst_avi_demux_riff_parse_vprp(), where the count of video field descriptors is derived by dividing remaining buffer size by an attacker-controlled vprp->fields value rather than the struct size, causing the parser to treat more descriptors as valid than the buffer holds. User interaction is required to trigger the bug (the victim must open or stream the malicious AVI via playbin or decodebin), and the primary confirmed impact is denial of service; limited information disclosure is also possible. No public exploit or CISA KEV listing has been identified at time of analysis.
Use-After-Free vulnerabilities in the GNU linker (ld) component of binutils crash the linker process when processing crafted object or archive files during LTO-enabled linking on Red Hat Enterprise Linux systems. The flaws exist at three distinct dereference points in add_archive_element() in ld/ldmain.c, where plugin_maybe_claim() frees the BFD object but the caller retains dangling pointers that are subsequently accessed. The attack surface is confined to build-time environments, with the primary realistic threat being a supply chain attack introducing a malicious object file into CI/CD pipelines or developer build systems; no public exploit code or active exploitation has been confirmed at time of analysis.
Heap corruption via double-free in 389-ds-base's LDAP control parsing allows an unauthenticated remote attacker to crash the directory service with a single crafted BIND request. The flaw resides in `get_ldapmessage_controls_ext()`, which frees a parsed controls array when rejecting an unknown critical Session Tracking control but fails to clear the corresponding SLAPI_REQCONTROLS pblock slot - causing operation teardown to free the same pointer a second time. Affected deployments include Red Hat Directory Server 11 through 13 and the 389-ds-base package across all supported RHEL versions (6-10). No public exploit code has been identified and the vulnerability is not listed in the CISA KEV catalog; the CVSS AC:H rating reflects that reliable heap exploitation requires specific memory layout conditions rather than a trivially repeatable one-shot crash.
NULL pointer dereference in the shim application's dp.c library exposes Red Hat Enterprise Linux 7, 8, and 9 systems using UEFI Secure Boot to a local denial-of-service condition. An attacker with high local privileges and the ability to interact with the shim boot path can trigger the missing NULL pointer check, potentially disrupting the boot process. No public exploit code has been identified at time of analysis, and the low CVSS score of 3.9 reflects the constrained attack prerequisites, though the changed scope (S:C) signals that the impact crosses from the shim component into the broader boot environment.
Sensitive guest disk contents are exposed to any local user on Red Hat Enterprise Linux KVM hosts due to `qemu-img` creating new volume image files with world-readable permissions during libvirt storage clone or convert operations. Affected platforms span RHEL 6 through 10 and RHEL for Nvidia 26. No public exploit code has been identified and this vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog at time of analysis, but the CVSS C:H rating reflects full guest disk exposure to a low-privileged local attacker.
Signed integer overflow in GIMP's file-fli plugin causes application crashes when processing maliciously crafted FLI animation files, resulting in denial of service. The flaw affects GIMP as packaged on Red Hat Enterprise Linux 6 through 9, where incorrect multiplication of image width and height during buffer size calculation can overflow a signed integer, producing an invalid allocation. No public exploit code or active exploitation has been identified; impact is strictly limited to availability, with no confidentiality or integrity consequences.
Missing authorization on CleanAllRUV and Abort CleanAllRUV LDAP extended operations in 389 Directory Server (Red Hat Directory Server 11-13) allows unauthenticated remote attackers - when the default anonymous access setting is active - to manipulate replication metadata, purge changelog records, and abort administrator-initiated cleanup tasks. The affected operations are replication-maintenance primitives that bypass the authorization layer entirely (CWE-862), meaning no account or session is required under default configuration. No public exploit code or active exploitation in CISA KEV has been identified at time of analysis, but the network-accessible, zero-authentication attack surface in a widely deployed enterprise directory server makes this a notable availability and integrity risk.
Integer overflow in p11-kit's RPC message parser on 32-bit systems allows a local attacker, or any principal with access to a reachable RPC channel, to crash the p11-kit process via a heap out-of-bounds write, resulting in Denial of Service. Affected deployments span Red Hat Enterprise Linux 6 through 10, Red Hat Hardened Images, and OpenShift Container Platform 4. No public exploit code has been identified at time of analysis, and the vulnerability is not listed in the CISA KEV catalog.
SELinux label manipulation via TOCTOU race condition in the policycoreutils fixfiles script allows a local low-privileged attacker to corrupt SELinux mandatory access control labels on arbitrary system files, including security-critical targets such as /etc/shadow. The flaw affects fixfiles when run in relabel or restore mode across all supported Red Hat Enterprise Linux releases (6 through 10), Red Hat Hardened Images, and OpenShift Container Platform 4. No public exploit code or active exploitation has been identified at time of analysis, and exploitation is constrained by both a required race condition win and the need for an administrator to actively invoke fixfiles.
Persistent denial of service in dhcp-server (dhcpd) on Red Hat Enterprise Linux 6 through 9 is triggered via a crafted OMAPI lease creation request containing an overly long InfiniBand MAC address, overflowing a buffer in `print_hw_addr()` and crashing the dhcpd daemon in a way that prevents automatic recovery. The official CVSS score of 4.9 with PR:H reflects the assumption that TSIG authentication guards the OMAPI port; however, the description explicitly highlights that TSIG is optional and often absent, reducing the realistic exploitation barrier to unauthenticated network access. No confirmed active exploitation (KEV) or public proof-of-concept exists at time of analysis.
Stack-based out-of-bounds read in stunnel's s_vlog logging function allows remote unauthenticated attackers to crash the service by sending protocol inputs that generate log messages exceeding 1024 bytes via vsnprintf. The primary impact is service disruption (availability), with a limited integrity impact in corner cases where trailing newline characters in the stack buffer can be overwritten with null bytes. No public exploit code has been identified at time of analysis, and this CVE is not listed in the CISA KEV catalog.
SSRF bypass in stunnel 5.79 and earlier allows authenticated SOCKS proxy clients to circumvent intended localhost access restrictions by supplying IPv4-mapped IPv6 addresses (e.g., ::ffff:127.0.0.1) or unspecified addresses (0.0.0.0, ::) in proxy requests. Exploitation reaches loopback-bound services on the stunnel host - services deliberately isolated from external network access - potentially exposing internal APIs, administrative interfaces, or other localhost-only endpoints. No public exploit code has been identified and this vulnerability is not listed in the CISA KEV catalog at time of analysis.
Off-by-one memory corruption in popt's poptStuffArgs function allows a local low-privileged attacker to overwrite adjacent memory and potentially execute arbitrary code within any host application that unsafely processes the corrupted argument data. All supported Red Hat Enterprise Linux releases (6 through 10), Red Hat Hardened Images, and OpenShift Container Platform 4 ship the affected library. No public exploit code has been identified and no CISA KEV listing exists; exploitation requires high-complexity triggering conditions, making this a routine patch priority rather than an emergency response item.
Uninitialized heap memory disclosure in SSSD's NSS responder exposes cached directory data and heap layout to local authenticated users on RHEL 6 through 10 and OpenShift Container Platform 4. The sss_nss_protocol_fill_initgr() function pre-allocates a reply buffer sized for all group entries but fails to shrink it when groups are skipped, causing uninitialized heap bytes to be included in the response transmitted back to the requesting client. No public exploit code has been identified at time of analysis, and this is not listed in CISA KEV; however, leaked heap addresses may assist in chained attacks targeting ASLR bypass in sssd_nss.
GNU tar's incremental restore path contains a TOCTOU race condition in dumpdir 'X' rename handling, allowing a local attacker with write access to a backed-up directory to redirect file operations outside the intended extraction root during a privileged restore. Successful exploitation can result in arbitrary file creation, rename, or overwrite - enabling privilege escalation on systems running Red Hat Enterprise Linux 6 through 10 and Red Hat Hardened Images. No public exploit is identified at time of analysis, and no CISA KEV listing exists; the CVSS score of 4.4 reflects the constrained attack prerequisites including a required race window and administrator-initiated restore.
Authentication bypass in 389 Directory Server (Red Hat Directory Server 11-13) allows a network-connected user holding valid credentials for an administratively locked account to retain an authenticated LDAP session, defeating account-lock as an access-revocation control. The SASL PLAIN bind handler installs connection-level authenticated state before executing the account-lock check; when the lock check fails, only the error is returned to the client while the internal authenticated state on that connection persists unrevertd. No public exploit has been identified at time of analysis and no CISA KEV listing exists, but the real-world impact is highest in incident-response and employee-offboarding scenarios that rely on directory lock as the primary revocation mechanism.
GNU tar's --one-top-level extraction mode fails to confine hardlink targets to the designated top-level directory, allowing a crafted archive to plant hardlinks that escape the intended extraction boundary. When combined with a preexisting symbolic link already present under the working directory, an attacker who can induce a victim to extract a malicious archive may read or write files outside the intended extraction scope on systems running affected RHEL versions (6 through 10) and Red Hat Hardened Images. No public exploit has been identified at time of analysis, and exploitation requires both user interaction and a specific environmental pre-condition, keeping real-world risk moderate despite GNU tar's ubiquitous deployment.
Out-of-bounds read in SSSD's NSS responder allows a local user with standard privileges to crash the SSSD process by sending a crafted GETHOSTBYADDR request, causing system-wide denial of authentication and name resolution services. The vulnerable function `sss_nss_protocol_parse_addr()` fails to validate the `addrlen` field against the actual remaining packet body size, enabling heap over-read and process termination. No public exploit code or active exploitation has been identified at time of analysis, and this vulnerability is not listed in CISA KEV.
Heap-based out-of-bounds write in GIMP's PAA (Paint Shop Pro Array) file format plugin allows a remote attacker to potentially execute arbitrary code on a victim's system by tricking the user into opening a specially crafted PAA image. The flaw resides in the decode_lzss() decompression function, which writes data beyond the bounds of the allocated heap buffer, enabling heap metadata corruption. No public exploit or CISA KEV listing exists at time of analysis, but the RCE-tagged impact and buffer-write primitive make this a higher-severity risk than the CVSS 5.5 score suggests; the CVSS impact metrics reflect only availability (A:H) while the description and tags indicate arbitrary code execution potential - a notable discrepancy to investigate.
Stack-based buffer overflow in GIMP's file-png plugin on Red Hat Enterprise Linux 6 through 9 causes the application to crash when a user opens a crafted Animated PNG (APNG) image containing an oversized tRNS chunk, resulting in a Denial of Service limited to the affected user session. Exploitation requires local file access and active user interaction - a remote attacker would rely on social engineering (phishing, malicious download) to deliver the file. No active exploitation has been confirmed by CISA KEV, no public exploit code is identified at time of analysis, and EPSS data is unavailable in source intelligence.
Denial of service in Samba's Kerberos KDC password change (kpasswd) service allows authenticated remote attackers to crash the KDC process by submitting specially crafted, malformed ASN.1-encoded password change requests. The server miscalculates the structure size of the incoming request and reads up to six bytes beyond the end of the allocated buffer; when this read strikes unmapped memory, the KDC process terminates rather than simply failing gracefully. No public exploit has been identified and no CISA KEV listing exists, but the disruption of a KDC in an Active Directory or Samba domain environment carries significant operational impact since authentication for the entire domain depends on KDC availability.
Samba's internal DNS server inserts unauthenticated TKEY registration requests into the TKEY name cache before rejecting them, allowing a remote unauthenticated attacker to exhaust the cache by flooding it with arbitrary TKEY names. Eviction of legitimate cache entries blocks TSIG-authenticated DNS query processing, producing a targeted denial of service against Active Directory environments relying on Samba's built-in DNS backend. No public exploit code or CISA KEV listing has been identified at time of analysis; a vendor patch is available from both Samba upstream and Red Hat.
Server-side request forgery in Dogtag PKI's ACME responder enables unauthenticated ACME account holders to direct the certificate server to make arbitrary HTTP GET requests to internal network addresses. The validator incorrectly accepts IP address literals as valid DNS identifiers and follows HTTP redirects without enforcing RFC-compliant public-address filtering, allowing internal network reconnaissance. When the InMemory database backend is in use, the response body returned by internal services is exposed to the attacker through ACME challenge error messages, compounding the confidentiality impact. No public exploit code or active exploitation has been identified at time of analysis.
Path traversal in the Performance Co-Pilot (PCP) pmproxy logger servlet on Red Hat Enterprise Linux 6 through 10 and OpenShift Container Platform 4 permits unauthenticated remote attackers to create arbitrary files and directories on the host filesystem by supplying a crafted hostname value in requests to the service. The primitive is write-only - no file contents can be read - but an attacker can abuse it to corrupt directory structures or exhaust disk space, leading to denial of service. No public exploit code has been identified at time of analysis and the vulnerability is not listed in the CISA KEV catalog.
Remote unauthenticated denial of service and memory disclosure in the Performance Co-Pilot (PCP) pmproxy service affects Red Hat Enterprise Linux 6 through 10 and OpenShift Container Platform 4. An out-of-bounds read (CWE-125) in the pmLogLoadInDom() function can be triggered by a specially crafted network request, causing the pmproxy process to crash and potentially leaking sensitive data from process memory. No public exploit code has been identified at time of analysis, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.
Out-of-bounds heap read in GNU Binutils linker when processing 32-bit XCOFF files allows local attackers to disclose heap memory and cause denial of service. Affects Red Hat Enterprise Linux 6 through 10, Hardened Images, and OpenShift Container Platform 4. No public exploit or active exploitation identified at time of analysis; EPSS data unavailable.
Authorization bypass in Red Hat Certificate System's CA renewal path allows an authenticated user to renew a certificate belonging to a different realm without the required realm-based authorization check. Affects versions 9, 10, and 11 of the Certificate System on Red Hat Enterprise Linux 6 through 10. No evidence of active exploitation or public exploit code exists at the time of analysis, and EPSS probability is low (0.21%).
Local information disclosure in accountsservice on Red Hat Enterprise Linux allows systemd-homed users to read arbitrary files via the SetIconFile handler. A proof-of-concept exists, but exploitation requires a local account managed by systemd-homed, limiting impact
Out-of-bounds heap read in gdk-pixbuf's ICO parser exposes heap memory content through rendered image output, affecting Red Hat Enterprise Linux 6 through 10. When processing a crafted ICO file whose pixel indices exceed the defined palette size, the library reads beyond the palette array boundary - heap bytes are treated as palette entries and rendered as RGB pixel values in the output image, enabling an attacker to extract heap content by analyzing the rendered result. No public exploit has been identified at time of analysis and the vulnerability is not listed in CISA KEV, but server-side image processing pipelines that return rendered output to untrusted callers represent a realistic exposure path.
Format string vulnerability in GNU nano's multi-buffer error message handling allows a local low-privileged attacker to cause stack information disclosure, denial of service via crash, or potentially achieve arbitrary memory writes. The flaw (CWE-134) is triggered when a user opens multiple files at startup, one of which carries a specially crafted name containing printf format specifiers and another triggers an ALERT-level error - causing nano to misinterpret the filename as a format string. Reported by Red Hat and scoped to RHEL 6 through 10 and OpenShift Container Platform 4, no public exploit or CISA KEV listing exists at time of analysis.
Symlink-following vulnerability (CWE-59) in systemd-tmpfiles allows a local, low-privileged user to redirect privileged file write operations to an attacker-controlled path on affected Red Hat Enterprise Linux systems. The flaw resides in the path resolution logic within chase.c, where a safety check incorrectly treats all transitions away from the root user as inherently safe - failing to detect attacker-placed symlinks at tmpfiles.d target path components. Exploitation is constrained by high attack complexity requiring a specific non-default tmpfiles.d configuration, and no public exploit code or CISA KEV listing has been identified at time of analysis.
Heap buffer overflow in Red Hat Directory Server (389-ds-base) exposes LDAP services to remote unauthenticated denial of service or potential arbitrary memory write via malformed DN input. When a Distinguished Name containing a legacy-quoted value is processed, the server fails to close the associated heap allocation, permitting a subsequent operation to reference the same memory pointer - a classic heap confusion primitive. No public exploit has been identified at time of analysis, and this vulnerability is not listed in CISA KEV, though the network-accessible unauthenticated attack surface warrants prompt patching for any externally reachable Directory Server deployment.
Off-by-one heap out-of-bounds read in the BlueZ SBC (Sub-Band Coding) frame decoder allows a Bluetooth-adjacent unauthenticated attacker to leak a single byte of heap memory by streaming a crafted audio payload. Red Hat Enterprise Linux 7 through 10 are confirmed affected via the bundled sbc library. No public exploit code exists and this vulnerability is not listed in CISA KEV, making active exploitation unlikely; the impact is constrained to minor information disclosure of a single heap byte.
Unvalidated chown in Samba's pam_winbind module allows a local user with narrow sudo delegation to transfer ownership of the root filesystem directory to a system account, causing system-wide denial of service on Red Hat Enterprise Linux 6 through 10. When mkhomedir is enabled and a system account has its home directory set to '/', any PAM-triggered authentication event run as that account via sudo invokes the chown without path sanitization. The resulting ownership change breaks SSH, sudo, and package-manager functionality, though the 0555 permissions on RHEL prevent write access escalation, confining the impact to high-severity availability loss. No public exploit or CISA KEV listing is identified at time of analysis.
Out-of-bounds read in libsoup's multipart processing exposes applications on Red Hat Enterprise Linux 6 through 10 to remote denial-of-service or partial memory disclosure. The flaw resides in soup_multipart_input_stream_read_headers() where oversized or malformed multipart boundary strings are not adequately size-validated, allowing an attacker to cause the stream reader to exceed its allocated buffer. A proof-of-concept exists per SSVC data, the attack is rated automatable, and no active exploitation is confirmed in CISA KEV - placing this in a monitored-but-actionable risk tier rather than an emergency response category.
Memory leak in libsoup's HTTP/2 implementation allows a remote, unauthenticated attacker to incrementally exhaust heap memory and crash the affected application through a sustained out-of-memory condition. Affected deployments include any application linking libsoup on Red Hat Enterprise Linux 6 through 10 that handles HTTP/2 connections from untrusted peers. No public exploit code has been identified and CISA has not listed this in KEV; however, the network-accessible attack surface with no authentication requirement makes it relevant for internet-facing services using libsoup. Notably, the provided CVSS vector (C:H/I:N/A:N) is internally inconsistent with the DoS-only description - the correct impact metrics should reflect Availability, not Confidentiality, and this discrepancy is flagged in the risk assessment.
Timing side-channel exposure in Red Hat Directory Server's PBKDF2-SHA256 password verification allows a remote unauthenticated attacker to send repeated LDAP bind requests and statistically infer partial hash information by measuring response-time differences caused by non-constant-time memcmp() comparisons. Affected deployments span Red Hat Directory Server 11 through 13 and the 389-ds-base package shipped across RHEL 6 through 10. No public exploit identified at time of analysis, and practical exploitation is acknowledged to be extremely difficult due to the computational overhead inherent in PBKDF2 key stretching, which substantially degrades the timing signal.