Red Hat Enterprise Linux 6
Monthly
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.
Attribute encryption in the 389-ds-base LDBM backend exposes a cryptographic design flaw affecting Red Hat Directory Server 11, 12, and 13 across all supported RHEL releases (6 through 10). The LDBM backend applies a static, hardcoded initialization vector (IV) for both AES-CBC and 3DES-CBC encryption of directory attribute values, meaning that two entries storing identical plaintext for an encrypted attribute will always produce identical ciphertext blocks - a classic ciphertext equality oracle. An attacker with privileged filesystem-level read access to the LDBM database files can exploit this to determine whether any two encrypted attribute values are identical, leaking relational information about the directory without recovering plaintext. No public exploit code has been identified at time of analysis, and this CVE is not listed in the CISA KEV catalog.
GStreamer's webrtcbin component accepts remote SDP offers and answers that are missing the required a=fingerprint attribute due to an inverted boolean logic check in _check_sdp_crypto(), undermining the DTLS certificate fingerprint binding that protects WebRTC media streams from interception. An attacker already positioned as a man-in-the-middle on the WebRTC signaling channel can strip the a=fingerprint attribute from SDP messages, which the vulnerable code then incorrectly accepts, allowing the attacker to substitute their own DTLS certificate and intercept or tamper with encrypted media. No public exploit code exists and no CISA KEV listing has been issued; however, the flaw is architecturally significant because it silently voids a key WebRTC security guarantee rather than causing an obvious crash.
Heap-buffer-overflow in 389 Directory Server's DN normalization routine allows an unauthenticated remote attacker to corrupt heap memory and likely crash the LDAP service. The flaw triggers when the server processes an LDAP operation - such as a search request - whose base DN contains a legacy-quoted value encoding a multivalued nested Relative Distinguished Name (RDN), causing an out-of-bounds write during RDN attribute-value pair sorting. Per the confirmed CVSS vector (PR:N), no authentication is required; no public exploit code or CISA KEV listing has been identified at time of analysis.
Integer overflow in GIMP's PlayStation TIM image loader crashes the plug-in when processing a maliciously crafted TIM file, resulting in denial of service. The flaw affects GIMP as packaged on Red Hat Enterprise Linux 6 through 9, where the TIM loader multiplies two 16-bit unsigned short values (num_colors × num_cluts) without bounds checking, producing a 32-bit overflow that corrupts CLUT size calculation and triggers an abort. No public exploit code has been identified at time of analysis, and exploitation requires user interaction to open a crafted file, limiting real-world impact to targeted social engineering scenarios.
Two off-by-one errors in FreeIPA's ipa-otpd daemon expose RHEL 6 through 10 deployments configured with an external OAuth2/OIDC Identity Provider to out-of-bounds memory access during the device authorization flow. An attacker who controls or can man-in-the-middle the configured IdP endpoint can serve an oversized authorization response, triggering CWE-787 writes or reads one byte past a fixed-size buffer boundary. The most probable outcome is denial of service of the ipa-otpd daemon; no public exploit has been identified and the vulnerability is not listed in the CISA KEV catalog.
Double-free memory corruption in GIMP's PSP file format parser exposes local users to denial of service and potential arbitrary code execution when opening a specially crafted Paint Shop Pro image file. The flaw in read_layer_block() allows heap memory corruption that reliably crashes GIMP and, in a more sophisticated exploitation scenario, could enable arbitrary code execution with the privileges of the victim user. No public exploit has been identified and this vulnerability does not appear in the CISA KEV catalog, though upstream tagging of the issue as RCE-capable warrants patching in environments where GIMP users may open untrusted image files.
Use-after-free in the SSSD PAM responder crashes the authentication daemon when a local attacker manipulates YubiKey or smartcard contents during an authentication attempt on Red Hat Enterprise Linux 6 through 10. The primary realized impact is a denial of service - the PAM responder crash disrupts all authentication - but the underlying memory corruption also presents a difficult-to-exploit privilege escalation path. No public exploit code exists at time of analysis, and the CVSS vector (AV:L/AC:H/PR:H) reflects a tightly constrained local attack requiring high privileges and significant complexity, limiting realistic blast radius to insider-threat and physical-access scenarios.
Stack exhaustion in p11-kit's RPC server crashes the daemon and any dependent cryptographic services on affected Red Hat systems. The vulnerability exists in the PKCS#11 RPC message parsing layer, where two attribute-handling functions form a mutually-recursive call chain with no depth limit when processing nested CKA_WRAP_TEMPLATE, CKA_UNWRAP_TEMPLATE, and CKA_DERIVE_TEMPLATE attributes - allowing any local user or process with socket access to crash the server by sending a single crafted request. No public exploit or active exploitation has been identified at time of analysis, and impact is limited to availability (denial of service) with no confidentiality or integrity consequence.
Path traversal in spice-vdagent enables a malicious or compromised SPICE host to write arbitrary files to any location on the guest operating system during file transfer operations. Affecting Red Hat Enterprise Linux versions 6 through 10, the flaw stems from unsanitized filenames supplied by the SPICE host before use by the vdagent process, allowing writes at the privilege level of the logged-in guest user. No public exploit is identified at time of analysis, and exploitation requires prior control of the SPICE host - a high-privilege precondition that substantially constrains realistic risk despite the high integrity impact.
Integer overflow in spice-vdagent's message parsing allows a malicious or compromised SPICE host to crash the guest VM's vdagent daemon by delivering a specially crafted message that triggers a downstream heap buffer overflow. Affected deployments span spice-vdagent as packaged in Red Hat Enterprise Linux 6 through 10, where the daemon runs inside guests handling host-to-guest SPICE protocol communications. No public exploit code or CISA KEV listing exists at time of analysis; exploitation is structurally constrained by the requirement that the attacking SPICE host itself be untrusted or already compromised prior to the attack.
Heap out-of-bounds read in GStreamer's gst-plugins-bad H.264 parser allows an attacker to crash a media application or leak a single byte of heap memory by tricking a victim into opening a specially crafted H.264 video file containing malformed MVC or SVC extension slice NAL units. Affected systems span Red Hat Enterprise Linux versions 6 through 10 where gst-plugins-bad is installed. No public exploit code has been identified at time of analysis and the vulnerability is absent from CISA KEV; the narrow 1-byte read, required user interaction, and local attack vector substantially limit real-world exploitation impact.
Heap out-of-bounds read in dnsmasq's find_soa() function allows a remote attacker controlling a DNS zone to leak up to 10 bytes of stale heap memory by serving a crafted NXDOMAIN response. The flaw exists because extract_name() is invoked with extrabytes=0 when parsing NS section records, skipping the mandatory boundary check for the 10-byte fixed-length DNS record trailer fields. Confirmed affected platforms include Red Hat Enterprise Linux 6 through 10 and OpenShift Container Platform 4; no public exploit or CISA KEV listing has been identified at time of analysis.
OpenSSH's GSSAPI authentication cleanup routine contains a heap out-of-bounds read (CWE-125) triggered when the auth-indicators array lacks a trailing NULL terminator, allowing a remote unauthenticated attacker to crash the SSH authentication path and deny SSH service availability. Exploitation is constrained by high attack complexity (AC:H) due to the non-default Kerberos/GSSAPI configuration requirement, limiting real-world exposure to a minority of deployments. No active exploitation is confirmed (not in CISA KEV), no public exploit code has been identified, and the impact is restricted to partial availability loss with no confidentiality or integrity consequence.
X11 forwarding session hijacking in OpenSSH enables a local unprivileged attacker sharing a Linux client host to intercept and partially manipulate the victim's forwarded X11 display traffic by squatting on the predictable abstract UNIX domain socket name before the SSH client creates it. Affected deployments span OpenSSH packages across 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, but successful exploitation yields high-confidence access to sensitive X11 session data including keystrokes, window contents, and clipboard material.
Client-side Denial of Service in OpenSSH's Diffie-Hellman Group Exchange implementation allows a malicious SSH server to crash connecting clients running in FIPS mode. When a victim initiates an SSH connection to an attacker-controlled server, the server sends crafted DH-GEX group parameters that trigger a double free (CWE-415) during FIPS known-group validation, terminating the client process. No public exploit code has been identified at time of analysis, and the vulnerability is not listed in CISA KEV; however, the constraint that only FIPS-mode clients are affected limits real-world impact to regulated or government environments.
Malformed HTTP Range request handling in libsoup (GNOME's HTTP client/server library, packaged across Red Hat Enterprise Linux 6-10) re-introduces a signed integer underflow originally patched in CVE-2026-2443. A rework commit replaced specific overflow guards with a general signed comparison, meaning a suffix-byte Range request whose length exceeds the resource content size now produces a negative start offset that is passed unclamped to buffer operations, generating malformed HTTP 206 responses and log flooding. No public exploit has been identified at time of analysis and the vulnerability is not listed in CISA KEV, but the unauthenticated network vector makes any exposed libsoup HTTP server reachable without credentials.
Heap-based buffer overflow in dnsmasq's DNSSEC logging path enables remote denial of service against instances where both DNSSEC validation and query logging are simultaneously enabled. When dnsmasq receives a DS or DNSKEY DNS response containing an algorithm or digest type it does not recognize, its logging routine writes past the end of an internal heap-allocated buffer, corrupting memory and crashing the process. No public exploit code has been identified at time of analysis, and this CVE is not listed in the CISA KEV catalog; however, the network-deliverable attack vector (PR:N) makes the configuration prerequisite the primary limiting factor for defenders.
Use-after-free in 389 Directory Server's schema reload path crashes the server when administrative schema reloads race against active LDAP query worker threads. The `attr_syntax_swap_ht()` function bypasses the refcount-based deferred deletion mechanism used throughout the attribute syntax subsystem, directly freeing nodes that concurrent worker threads may still hold references to. Affected products span Red Hat Directory Server 11, 12, and 13 across RHEL 6 through 10; no public exploit or active exploitation (CISA KEV) has been identified at time of analysis, and the CVSS score of 5.0 reflects the high-complexity, high-privilege prerequisites that substantially reduce real-world risk.
Heap buffer overflow in 389 Directory Server's ACI parsing layer allows an authenticated LDAP user with write access to the `aci` attribute to silently corrupt heap memory in the directory server process by submitting a malformed Access Control Instruction string. The `__aclp__normalize_acltxt()` function in `aclparse.c` performs pointer arithmetic on the keyword portion of an ACI string without validating minimum remaining buffer length after whitespace stripping, resulting in a 1-byte out-of-bounds write followed by out-of-bounds reads (CWE-787). No public exploit or CISA KEV listing has been identified at time of analysis; an upstream fix is available via GitHub PR #7542 but a released patched version has not been independently confirmed.
Arbitrary file deletion in evolution-data-server's addressbook file backend exposes host filesystem to manipulation by a Flatpak application with D-Bus access. The vulnerability exploits split validation logic: a crafted URI embedding directory traversal sequences (e.g., '../') is accepted without sufficient sanitization during contact creation or modification, but when the same URI is later processed at deletion time, a second, less restrictive check fails to catch the traversal - allowing files outside the intended addressbook directory to be removed. Critically, deletion of Flatpak override files could be leveraged to silently weaken sandbox restrictions for subsequent application runs. No public exploit has been identified at time of analysis.
Use-after-free memory corruption in GnuTLS's PKCS#11 PIN management function `gnutls_pkcs11_token_set_pin` enables a local low-privileged attacker to crash the process and potentially corrupt memory on systems where PKCS#11 tokens are deployed without a protected authentication path. Affected deployments span Red Hat Enterprise Linux 6 through 10, Red Hat Hardened Images, and Red Hat OpenShift Container Platform 4, as confirmed by Red Hat (reporter) and covered under GnuTLS upstream advisory GNUTLS-SA-2026-04-29-9. No public exploit code has been identified at time of analysis, and the vulnerability is not listed in the CISA KEV catalog.
Denial of service in GStreamer's AV1 codec parser (gst-plugins-bad) allows a remote unauthenticated attacker to crash any application using GStreamer for AV1 media playback by delivering a specially crafted AV1 file. The root cause is a unit mismatch in the gst_av1_parser_parse_tile_list_obu() function, which feeds a byte count to an API expecting a bit count, desynchronizing the parser and triggering an assertion abort. No public exploit has been identified at time of analysis, and exploitation requires user interaction; however, the vulnerability affects Red Hat Enterprise Linux 6 through 10 where GStreamer is a core multimedia component.
Out-of-bounds read vulnerabilities in GStreamer's pcapparse element expose Red Hat Enterprise Linux 6 through 10 users to potential application crashes or limited memory disclosure when processing malformed PCAP files. The flaws reside in IPv4/TCP header parsing logic, where specially crafted PCAP records trigger reads beyond buffer boundaries across multiple code paths. Real-world exposure is materially constrained by pcapparse's restriction to debugging pipelines, the requirement for local user interaction, and high attack complexity; no public exploit or active exploitation has been identified at time of analysis.
Content injection in libreport's ABRT post-create event handler grants a low-privileged local user the ability to control file content that the root process writes into crash dump directories. When a monitored process crashes, the event handler script queries the systemd journal for matching log entries and writes the results directly to dump directory files without stripping embedded control characters - allowing an attacker who can write syslog messages to pre-position newline-delimited payloads that corrupt or inject arbitrary lines into those root-owned files. No public exploit code or CISA KEV listing has been identified at time of analysis, and exploitation is constrained to local access with low privileges.
Out-of-bounds heap write in QEMU's virtio-blk device allows a high-privileged guest to crash the host QEMU process. The flaw exists because the virtio-blk device omits validation of input descriptor sizes prior to writing data, enabling a malicious guest operator to submit a crafted virtio-blk SCSI request that writes beyond the allocated host heap buffer. The primary confirmed impact is a denial of service (DoS) of the QEMU process on the host; no public exploit code has been identified at time of analysis and it is not listed in the CISA KEV catalog.
Heap out-of-bounds read in MIT krb5's LDAP KDB plugin allows a compromised or malicious LDAP backend to crash the KDC or kadmind process, or leak heap memory. The flaw exists in berval2tl_data() within libkdb_ldap and is triggered when the LDAP server returns a krbExtraData attribute with bv_len less than 2, causing an unsigned integer underflow that drives a memcpy of up to 65,534 bytes from a near-zero-length source buffer. Exploitation requires prior control of the LDAP KDB backend server (PR:H, AC:H), constraining real-world risk to insider or supply-chain threat scenarios; no public exploit or CISA KEV listing exists at time of analysis.
Heap buffer overflow in Red Hat 389 Directory Server allows an authenticated Directory Manager or a compromised replication supplier to crash the server or corrupt heap memory by creating objectclass definitions with excessively long SUP (oc_superior) values. The flaw exists in schema serialization functions where the SUP field length is excluded from buffer size calculations yet still written via strcat(), producing an off-by-N heap overwrite. This is explicitly an incomplete fix variant of CVE-2025-14905, meaning organizations that patched that prior CVE may remain exposed if the SUP field code path was not remediated; no public exploit has been identified at time of analysis.
Heap buffer overflow in Red Hat Directory Server's audit logging subsystem allows an authenticated high-privilege attacker to corrupt heap memory and tamper with audit log output. The vulnerable function create_masked_entry_string() in auditlog.c writes a fixed-length password mask into a precisely-sized heap buffer without bounds checking, overflowing when a short cleartext password is processed. Exploitation requires two non-default preconditions - audit logging must be enabled AND either CLEAR password storage must be configured or a replication peer must already be compromised - limiting real-world exposure significantly. No public exploit identified at time of analysis, and this CVE is not listed in the CISA KEV catalog.
Stack buffer overflow in 389 Directory Server's pw.c checkPrefix() function allows a network-accessible Directory Manager to crash the LDAP server by storing a crafted credential with an oversized algorithm ID. The vulnerable code copies attacker-controlled input into a fixed 256-byte stack buffer without bounds checking when parsing reversible-encrypted attribute values. FORTIFY_SOURCE compiler hardening constrains impact to denial of service - preventing arbitrary code execution - but service disruption against a critical authentication infrastructure component remains operationally significant. No public exploit identified at time of analysis.
Uncontrolled CPU consumption in Red Hat 389 Directory Server's PBKDF2-SHA256 password storage plugin allows a highly privileged attacker who has write access to stored password hashes to craft a hash embedding an arbitrarily large iteration count, causing the LDAP server to exhaust CPU resources during any subsequent authentication attempt by the targeted user. Affected products span Red Hat Directory Server 11 through 13 and the 389-ds package as shipped across Red Hat Enterprise Linux 6 through 10. No public exploit has been identified at time of analysis, and active exploitation has not been confirmed by CISA KEV.
Denial-of-service in Red Hat's 389 Directory Server allows a highly privileged network attacker to crash the LDAP service by submitting a crafted password hash shorter than 16 bytes during authentication. The SMD5 password storage plugin performs an unsigned integer underflow (CWE-191) when computing salt length from this malformed input, producing a buffer over-read that terminates the server process. No public exploit code exists and this vulnerability has not been confirmed actively exploited (CISA KEV), but the impact is a complete loss of LDAP availability with low attack complexity once the required privilege level is achieved.
Heap buffer over-read in Red Hat Directory Server's ldap_utf8prev() function exposes LDAP deployments to potential confidentiality, integrity, and availability impact via crafted string filter input. The flaw affects authenticated, network-accessible LDAP servers running Red Hat Directory Server 11, 12, and 13 as well as the 389-ds component shipped across Red Hat Enterprise Linux 6 through 10. No public exploit identified at time of analysis and the vulnerability is not listed in CISA KEV; however, its presence in filter parsing logic - a core LDAP code path - warrants prompt patching in internet-exposed or multi-tenant directory environments.
Partial stack address disclosure in Red Hat 389 Directory Server (versions 11, 12, and 13) allows authenticated remote users to extract memory layout information via crafted LDAP extended operation requests. The root cause is a CWE-843 type confusion in the SSO token extended operation handler, which causes stack pointer data to bleed into LDAP response payloads. While the direct impact is limited to low-confidence information disclosure, leaked stack addresses are a classic ASLR-weakening primitive that could facilitate chained exploitation. No public exploit has been identified at time of analysis, and the vulnerability is not listed in CISA KEV.
Out-of-bounds read in 389 Directory Server's LDIF parser exposes limited heap memory to a highly privileged local attacker during database import operations. Exploitation requires local system access, high attack complexity, and high privileges (administrator-level), producing only minor confidentiality impact with no integrity or availability consequences. No public exploit identified at time of analysis and no KEV listing; the CVSS score of 1.9 reflects the extremely constrained exploitation conditions, making this a low operational priority absent specific threat model considerations.
Denial of service in Red Hat 389 Directory Server's Content Synchronization persistent search plugin enables authenticated network clients to exhaust server memory by initiating a sync operation and halting consumption of responses, causing unbounded queue growth until the server becomes unavailable. Compounding this, race conditions in the plugin's thread lifecycle management can independently trigger server crashes during connection teardown or graceful shutdown. Affected across Red Hat Directory Server 11, 12, and 13 as well as the bundled 389-ds-base package on RHEL 6 through 10. No public exploit identified at time of analysis and no CISA KEV listing.
Use-after-free read in X.Org X server and Xwayland's CreateSaverWindow() function exposes heap memory to local authenticated users, resulting in information disclosure. A low-privileged local X client can manipulate window attributes and force screen saver activation to trigger a read from freed memory, leaking potentially sensitive heap contents (C:H/I:N/A:N). No public exploit identified at time of analysis, and this vulnerability is not listed in CISA KEV; however, an upstream fix commit has been published and a Red Hat advisory is available.
Out-of-bounds read in X.Org X server and Xwayland's GLX extension handler `__glXDisp_ChangeDrawableAttributes()` allows a local low-privileged user to disclose sensitive memory contents from the X server process. Faulty size validation permits reading a client-controlled number of bytes beyond the request buffer boundary, resulting in high confidentiality impact per CVSS. A secondary write path exists in the same function but is gated behind byte-swapped client support, which is disabled by default, substantially limiting its practical exposure. No public exploit code and no CISA KEV listing have been identified at time of analysis.
Local privilege escalation in NetworkManager's dhclient backend allows a low-privileged local user to execute arbitrary OS commands with elevated privileges by supplying a crafted Manufacturer Usage Description (MUD) URL. Exploitation is strictly limited to systems where an administrator has explicitly reconfigured NetworkManager to use the dhclient backend - a non-default setting - meaning the vast majority of deployments are unaffected by design. CVSS 6.7 (local vector, high complexity, user interaction required) accurately reflects the constrained exploitation conditions; no public exploit code or CISA KEV listing exists at time of analysis.
GnuTLS's PKCS#7 padding validation during decryption is not implemented as a constant-time operation, creating a timing side-channel (CWE-208) that remote unauthenticated attackers can exploit to infer padding byte values on CBC-mode cipher suites. Affected deployments include GnuTLS as packaged across Red Hat Enterprise Linux 6 through 10, Red Hat Hardened Images, and Red Hat OpenShift Container Platform 4. Red Hat has issued patch RHSA-2026:20613; no active exploitation is confirmed in CISA KEV, and no public exploit code has been identified, but the network-reachable, no-auth-required attack surface warrants patching on systems handling sensitive encrypted traffic.
HTTP request smuggling in libsoup allows remote unauthenticated attackers to exploit an unsigned-to-signed integer conversion error in the `soup_body_input_stream_read_chunked()` function via a crafted HTTP request. The vulnerability is confined to specific proxy topologies where libsoup operates either behind or in front of a non-libsoup HTTP intermediary, and successful exploitation can result in authentication bypass, web cache poisoning, or unauthorized access. No public exploit has been identified at time of analysis and this CVE is not listed in CISA KEV, but the integrity and confidentiality impacts warrant urgent attention in any affected mixed-proxy deployment.
Denial of service in glib-networking allows a remote unauthenticated attacker to exhaust CPU resources in any application using the library's GnuTLS backend for certificate verification. By presenting a TLS certificate chain containing circular issuer relationships, the attacker triggers an unbounded loop (CWE-835) in the verification logic that never terminates. EPSS data was not provided; no public exploit code and no CISA KEV listing exist at time of analysis, placing this firmly in the 'monitor and patch' tier rather than emergency response.
Memory corruption via an off-by-one error in GnuTLS PKCS#12 bag element handling exposes any application using GnuTLS to remote unauthenticated denial of service - and potentially unspecified further impact - when a crafted PKCS#12 structure is parsed. The CVSS vector (AV:N/AC:L/PR:N/UI:N) confirms exploitation requires no authentication, no user interaction, and no elevated complexity, making internet-exposed services that parse client-supplied PKCS#12 inputs the primary risk surface. No public exploit code exists and the vulnerability is not listed in the CISA KEV catalog at time of analysis.
Out-of-bounds read in X.Org X Server XKB modifier map handling allows local authenticated attackers to read sensitive memory or crash the server by sending malformed X11 requests. The vulnerability affects RHEL 6 through 10 and requires local access with user-level privileges; exploitation results in information disclosure or denial of service.
Out-of-bounds read in X.Org X server XKB geometry processing allows local or remote attackers with X11 server access to disclose sensitive memory contents or cause denial of service by crashing the server. The vulnerability exists in CheckSetGeom() and XkbAddGeomKeyAlias functions and requires low privileges but no user interaction. No public exploit code or active exploitation has been identified at time of analysis.
GnuTLS with OCSP verification enabled incorrectly accepts revoked server certificates when presented with specially crafted multi-record OCSP responses during TLS handshakes, allowing attackers to bypass certificate revocation checks and establish connections to compromised servers. The vulnerability requires high attack complexity and specific OCSP configuration, affecting Red Hat Enterprise Linux 6-10, Red Hat Hardened Images, and OpenShift Container Platform 4. No public exploit code or active exploitation has been identified at the time of analysis.
HTTP request smuggling in libsoup's header parsing enables unauthenticated remote attackers to inject malformed requests containing multiple conflicting Content-Length headers, potentially bypassing security controls or poisoning shared connection state in two-tier deployments. The flaw resides in soup_message_headers_append_common() within libsoup/soup-message-headers.c, which blindly appends header values without validating for duplicate or contradictory Content-Length fields - a direct violation of RFC 7230. No active exploitation has been confirmed (not in CISA KEV), EPSS stands at 0.03% (8th percentile), and SSVC rates exploitation as none with partial technical impact, placing this firmly in the low-urgency tier despite its network-accessible attack vector.
WebKitGTK and WPE WebKit contain an API design flaw that allows untrusted web content to bypass the WebPage::send-request signal handler and perform unapproved network operations including IP connections, DNS lookups, and HTTP requests. The vulnerability affects applications across Red Hat Enterprise Linux 6-9 that rely on this signal to control network access. A remote attacker can trigger these bypassed requests via crafted web content with only user interaction (UI:R), resulting in limited confidentiality impact (C:L) without code execution.
Format string vulnerability in nano's statusline() function allows local users to trigger a segmentation fault via directory names containing printf specifiers, causing denial of service. Exploitation requires user interaction (opening a directory with the crafted name) on systems where nano is available to local users. No public exploit code identified at time of analysis.
The readelf utility in binutils is vulnerable to denial of service through null pointer dereference when processing specially crafted ELF files. A local attacker with limited privileges can trigger excessive resource consumption or program crashes by convincing a user to process a malicious ELF binary, affecting Red Hat Enterprise Linux 6, 7, 8, and 10. No public exploit code or active exploitation has been confirmed at this time.
Nano text editor creates ~/.local directory with overly permissive 0777 permissions instead of 0700 in environments with permissive umask settings, allowing local authenticated users to inject malicious .desktop launcher files that could lead to information disclosure or unintended actions when processed. CVSS score 2.5 reflects local attack vector and low integrity impact, with active exploitation status unknown and no public exploit code identified at time of analysis.
Buffer overflow in GIMP's file-seattle-filmworks plugin allows denial of service when a user opens a specially crafted Seattle Filmworks file. A remote attacker can deliver the malicious file via email or download, triggering a crash of the plugin and potentially impacting GIMP's stability. No active exploitation or public exploit code has been identified.
Denial of service in GIMP's PVR image loader on Red Hat Enterprise Linux 6 through 9 allows an attacker to crash the application by tricking a user into opening a specially crafted PVR file. The flaw arises from a stack-based buffer overflow and out-of-bounds read, causing the application to terminate unexpectedly. It is not known to be actively exploited; proof-of-concept code has not been publicly identified.
GIMP is vulnerable to a heap buffer over-read in the icns_slurp() function when processing malicious ICNS image files, potentially leading to application crashes or information disclosure. An attacker must trick a local user into opening a specially crafted file, with no known public exploit or active exploitation at this time. A vendor patch is available from Red Hat for affected RHEL distributions.
Denial of service in GIMP allows local attackers to crash the application by tricking a user into opening a malicious TIM image file. The vulnerability resides in the TIM image loader's 4BPP decoding path, where an unconditional stack buffer overflow occurs when processing a specially crafted file, with no impact on confidentiality or integrity. No active exploitation or public exploit is known, and a vendor patch is available.
GIMP's FITS image loader contains an integer overflow that can be triggered by a specially crafted file, leading to a heap buffer overflow and potential denial of service or arbitrary code execution. The vulnerability is patched by the vendor, and no active exploitation or public exploit code has been identified.
Local denial of service in SSSD's PAM passkey responder allows a low-privileged attacker to crash the daemon by sending crafted passkey authentication data, disrupting authentication services on affected Red Hat Enterprise Linux and OpenShift systems. The vulnerability is not known to be actively exploited, and its EPSS score is negligible (0.01%).
Local man-in-the-middle and SSH security downgrade in libssh on Windows stems from the library automatically loading configuration files from C:\etc, a directory that any unprivileged local user can create and populate. By planting a malicious config, an attacker can manipulate trusted host data and weaken SSH cryptographic negotiation, compromising the confidentiality, integrity, and availability of SSH sessions established by applications linking libssh. There is no public exploit identified at time of analysis, EPSS is negligible (0.01%), and it is not in CISA KEV.
Libarchive's archive_acl_from_text_nl() function fails to validate malformed ACL strings before dereferencing pointers, allowing local attackers to crash applications that process untrusted archives via specially crafted ACL fields. This NULL pointer dereference results in denial of service with high availability impact. CVSS 5.5 reflects local attack vector and user interaction requirement; no public exploit code or active exploitation confirmed at analysis time.
Tar archive extraction allows hidden file injection by local authenticated users through crafted malicious archives, bypassing pre-extraction inspection mechanisms and enabling introduction of attacker-controlled files. The vulnerability affects Red Hat Enterprise Linux versions 6 through 10, requires local access and user interaction (extraction action), and presents a moderate integrity risk (CVSS 5.0) with no confirmed active exploitation or public proof-of-concept at time of analysis.
Heap-based out-of-bounds read in libtheora's AVI parser allows local attackers with limited privileges to trigger application crashes or leak heap memory via specially crafted AVI files with truncated header sub-chunks. The vulnerability affects Red Hat Enterprise Linux versions 6 through 10 and requires user interaction (opening a malicious file), with real-world impact limited to denial-of-service and potential information disclosure rather than code execution.
Libsoup transmits sensitive session cookies in cleartext within HTTP CONNECT requests when establishing HTTPS tunnels through configured HTTP proxies, allowing network-positioned attackers or malicious proxies to intercept and hijack user sessions. The vulnerability affects Red Hat Enterprise Linux versions 6 through 10 and carries a CVSS 5.9 score with high confidentiality impact; no public exploit code or confirmed active exploitation has been identified at the time of analysis.
libssh attempts to open arbitrary files during configuration parsing, allowing local attackers with limited privileges to trigger a denial of service by forcing access to dangerous files such as block devices or large system files. The vulnerability affects Red Hat Enterprise Linux versions 6, 7, 8, 9, and 10, as well as Red Hat OpenShift Container Platform 4, and requires local access with low privileges to exploit. No public exploit code or active exploitation has been confirmed at the time of analysis.
libssh's match_pattern() function is vulnerable to ReDoS (Regular Expression Denial of Service) attacks when processing maliciously crafted hostnames in client configuration or known_hosts files, allowing local attackers with limited privileges and user interaction to trigger inefficient regex backtracking that exhausts system resources and causes client-side timeouts. The vulnerability affects Red Hat Enterprise Linux 6-10 and OpenShift Container Platform 4, with CVSS 2.2 reflecting low severity due to local attack vector and high complexity requirements, though the denial of service impact warrants attention in environments where SSH client availability is critical.
Libssh versions used across Red Hat Enterprise Linux 6-10 and OpenShift Container Platform 4 are vulnerable to a null pointer dereference when processing malformed 'longname' fields in SFTP SSH_FXP_NAME messages, allowing unauthenticated remote attackers to trigger denial of service through application crashes. The attack requires user interaction and high attack complexity (CVSS 3.1, CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L) but affects a widely deployed SSH library; no public exploit identified at time of analysis.
SCP client implementations across Red Hat Enterprise Linux 6-10 and OpenShift Container Platform 4 are vulnerable to path traversal during file transfer, allowing a malicious SCP server to write files outside the designated working directory and potentially execute arbitrary code or modify system configuration. This vulnerability mirrors CVE-2019-6111 in OpenSSH; unauthenticated remote attackers can exploit it with high user interaction (the victim must initiate an SCP connection to a malicious server), resulting in confidentiality, integrity, and availability compromise. No public exploit code or active exploitation has been confirmed at the time of analysis.
A security vulnerability in A flaw (CVSS 4.3). Remediation should follow standard vulnerability management procedures.
GIMP's PSP file parser fails to validate 32-bit length values in the read_creator_block() function, allowing local attackers to trigger integer overflow and heap buffer overflow via specially crafted PSP image files, resulting in application-level denial of service. Red Hat Enterprise Linux versions 6-9, Ubuntu (7 releases), Debian (9 releases), and SUSE are affected. No public exploit code or active exploitation has been identified at the time of analysis, though the vulnerability has been assigned ENISA EUVD ID EUVD-2026-16340 and tracked across major Linux distributions.
libsoup's SoupServer contains a use-after-free vulnerability in the soup_server_disconnect() function that prematurely frees connection objects while TLS handshakes are pending, allowing remote unauthenticated attackers to trigger a server crash via denial of service when a handshake completes after memory deallocation. The vulnerability affects Red Hat Enterprise Linux versions 6, 7, 8, 9, and 10, as well as Ubuntu and Debian distributions across multiple releases. No public exploit code or active exploitation has been confirmed at the time of analysis.
A security vulnerability in An incomplete fix for CVE-2024-47778 (CVSS 5.1) that allows an out-of-bounds read. Remediation should follow standard vulnerability management procedures.
A specially crafted XCOFF object file can trigger an out-of-bounds memory read in the GNU Binutils BFD library due to improper validation of relocation type values. This affects Red Hat Enterprise Linux versions 6 through 10 and Red Hat OpenShift Container Platform 4, potentially allowing local attackers with user interaction to crash affected tools or disclose sensitive memory contents. While not currently listed in CISA KEV as actively exploited, the vulnerability is tracked across Red Hat, Sourceware, and Bugzilla with upstream references indicating visibility and likely patch development.
HTTP/2 server implementations in libsoup across Debian and Red Hat Enterprise Linux versions contain a use-after-free vulnerability that allows unauthenticated remote attackers to trigger application crashes through specially crafted requests. Exploitation results in denial of service by forcing the application to access freed memory, causing instability. No patch is currently available for this medium-severity flaw.
A security vulnerability in A flaw (CVSS 3.9). Remediation should follow standard vulnerability management procedures.
A flaw was found in libsoup, a library used by applications to send network requests.
A security vulnerability in A flaw (CVSS 3.9). Remediation should follow standard vulnerability management procedures.
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.
Attribute encryption in the 389-ds-base LDBM backend exposes a cryptographic design flaw affecting Red Hat Directory Server 11, 12, and 13 across all supported RHEL releases (6 through 10). The LDBM backend applies a static, hardcoded initialization vector (IV) for both AES-CBC and 3DES-CBC encryption of directory attribute values, meaning that two entries storing identical plaintext for an encrypted attribute will always produce identical ciphertext blocks - a classic ciphertext equality oracle. An attacker with privileged filesystem-level read access to the LDBM database files can exploit this to determine whether any two encrypted attribute values are identical, leaking relational information about the directory without recovering plaintext. No public exploit code has been identified at time of analysis, and this CVE is not listed in the CISA KEV catalog.
GStreamer's webrtcbin component accepts remote SDP offers and answers that are missing the required a=fingerprint attribute due to an inverted boolean logic check in _check_sdp_crypto(), undermining the DTLS certificate fingerprint binding that protects WebRTC media streams from interception. An attacker already positioned as a man-in-the-middle on the WebRTC signaling channel can strip the a=fingerprint attribute from SDP messages, which the vulnerable code then incorrectly accepts, allowing the attacker to substitute their own DTLS certificate and intercept or tamper with encrypted media. No public exploit code exists and no CISA KEV listing has been issued; however, the flaw is architecturally significant because it silently voids a key WebRTC security guarantee rather than causing an obvious crash.
Heap-buffer-overflow in 389 Directory Server's DN normalization routine allows an unauthenticated remote attacker to corrupt heap memory and likely crash the LDAP service. The flaw triggers when the server processes an LDAP operation - such as a search request - whose base DN contains a legacy-quoted value encoding a multivalued nested Relative Distinguished Name (RDN), causing an out-of-bounds write during RDN attribute-value pair sorting. Per the confirmed CVSS vector (PR:N), no authentication is required; no public exploit code or CISA KEV listing has been identified at time of analysis.
Integer overflow in GIMP's PlayStation TIM image loader crashes the plug-in when processing a maliciously crafted TIM file, resulting in denial of service. The flaw affects GIMP as packaged on Red Hat Enterprise Linux 6 through 9, where the TIM loader multiplies two 16-bit unsigned short values (num_colors × num_cluts) without bounds checking, producing a 32-bit overflow that corrupts CLUT size calculation and triggers an abort. No public exploit code has been identified at time of analysis, and exploitation requires user interaction to open a crafted file, limiting real-world impact to targeted social engineering scenarios.
Two off-by-one errors in FreeIPA's ipa-otpd daemon expose RHEL 6 through 10 deployments configured with an external OAuth2/OIDC Identity Provider to out-of-bounds memory access during the device authorization flow. An attacker who controls or can man-in-the-middle the configured IdP endpoint can serve an oversized authorization response, triggering CWE-787 writes or reads one byte past a fixed-size buffer boundary. The most probable outcome is denial of service of the ipa-otpd daemon; no public exploit has been identified and the vulnerability is not listed in the CISA KEV catalog.
Double-free memory corruption in GIMP's PSP file format parser exposes local users to denial of service and potential arbitrary code execution when opening a specially crafted Paint Shop Pro image file. The flaw in read_layer_block() allows heap memory corruption that reliably crashes GIMP and, in a more sophisticated exploitation scenario, could enable arbitrary code execution with the privileges of the victim user. No public exploit has been identified and this vulnerability does not appear in the CISA KEV catalog, though upstream tagging of the issue as RCE-capable warrants patching in environments where GIMP users may open untrusted image files.
Use-after-free in the SSSD PAM responder crashes the authentication daemon when a local attacker manipulates YubiKey or smartcard contents during an authentication attempt on Red Hat Enterprise Linux 6 through 10. The primary realized impact is a denial of service - the PAM responder crash disrupts all authentication - but the underlying memory corruption also presents a difficult-to-exploit privilege escalation path. No public exploit code exists at time of analysis, and the CVSS vector (AV:L/AC:H/PR:H) reflects a tightly constrained local attack requiring high privileges and significant complexity, limiting realistic blast radius to insider-threat and physical-access scenarios.
Stack exhaustion in p11-kit's RPC server crashes the daemon and any dependent cryptographic services on affected Red Hat systems. The vulnerability exists in the PKCS#11 RPC message parsing layer, where two attribute-handling functions form a mutually-recursive call chain with no depth limit when processing nested CKA_WRAP_TEMPLATE, CKA_UNWRAP_TEMPLATE, and CKA_DERIVE_TEMPLATE attributes - allowing any local user or process with socket access to crash the server by sending a single crafted request. No public exploit or active exploitation has been identified at time of analysis, and impact is limited to availability (denial of service) with no confidentiality or integrity consequence.
Path traversal in spice-vdagent enables a malicious or compromised SPICE host to write arbitrary files to any location on the guest operating system during file transfer operations. Affecting Red Hat Enterprise Linux versions 6 through 10, the flaw stems from unsanitized filenames supplied by the SPICE host before use by the vdagent process, allowing writes at the privilege level of the logged-in guest user. No public exploit is identified at time of analysis, and exploitation requires prior control of the SPICE host - a high-privilege precondition that substantially constrains realistic risk despite the high integrity impact.
Integer overflow in spice-vdagent's message parsing allows a malicious or compromised SPICE host to crash the guest VM's vdagent daemon by delivering a specially crafted message that triggers a downstream heap buffer overflow. Affected deployments span spice-vdagent as packaged in Red Hat Enterprise Linux 6 through 10, where the daemon runs inside guests handling host-to-guest SPICE protocol communications. No public exploit code or CISA KEV listing exists at time of analysis; exploitation is structurally constrained by the requirement that the attacking SPICE host itself be untrusted or already compromised prior to the attack.
Heap out-of-bounds read in GStreamer's gst-plugins-bad H.264 parser allows an attacker to crash a media application or leak a single byte of heap memory by tricking a victim into opening a specially crafted H.264 video file containing malformed MVC or SVC extension slice NAL units. Affected systems span Red Hat Enterprise Linux versions 6 through 10 where gst-plugins-bad is installed. No public exploit code has been identified at time of analysis and the vulnerability is absent from CISA KEV; the narrow 1-byte read, required user interaction, and local attack vector substantially limit real-world exploitation impact.
Heap out-of-bounds read in dnsmasq's find_soa() function allows a remote attacker controlling a DNS zone to leak up to 10 bytes of stale heap memory by serving a crafted NXDOMAIN response. The flaw exists because extract_name() is invoked with extrabytes=0 when parsing NS section records, skipping the mandatory boundary check for the 10-byte fixed-length DNS record trailer fields. Confirmed affected platforms include Red Hat Enterprise Linux 6 through 10 and OpenShift Container Platform 4; no public exploit or CISA KEV listing has been identified at time of analysis.
OpenSSH's GSSAPI authentication cleanup routine contains a heap out-of-bounds read (CWE-125) triggered when the auth-indicators array lacks a trailing NULL terminator, allowing a remote unauthenticated attacker to crash the SSH authentication path and deny SSH service availability. Exploitation is constrained by high attack complexity (AC:H) due to the non-default Kerberos/GSSAPI configuration requirement, limiting real-world exposure to a minority of deployments. No active exploitation is confirmed (not in CISA KEV), no public exploit code has been identified, and the impact is restricted to partial availability loss with no confidentiality or integrity consequence.
X11 forwarding session hijacking in OpenSSH enables a local unprivileged attacker sharing a Linux client host to intercept and partially manipulate the victim's forwarded X11 display traffic by squatting on the predictable abstract UNIX domain socket name before the SSH client creates it. Affected deployments span OpenSSH packages across 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, but successful exploitation yields high-confidence access to sensitive X11 session data including keystrokes, window contents, and clipboard material.
Client-side Denial of Service in OpenSSH's Diffie-Hellman Group Exchange implementation allows a malicious SSH server to crash connecting clients running in FIPS mode. When a victim initiates an SSH connection to an attacker-controlled server, the server sends crafted DH-GEX group parameters that trigger a double free (CWE-415) during FIPS known-group validation, terminating the client process. No public exploit code has been identified at time of analysis, and the vulnerability is not listed in CISA KEV; however, the constraint that only FIPS-mode clients are affected limits real-world impact to regulated or government environments.
Malformed HTTP Range request handling in libsoup (GNOME's HTTP client/server library, packaged across Red Hat Enterprise Linux 6-10) re-introduces a signed integer underflow originally patched in CVE-2026-2443. A rework commit replaced specific overflow guards with a general signed comparison, meaning a suffix-byte Range request whose length exceeds the resource content size now produces a negative start offset that is passed unclamped to buffer operations, generating malformed HTTP 206 responses and log flooding. No public exploit has been identified at time of analysis and the vulnerability is not listed in CISA KEV, but the unauthenticated network vector makes any exposed libsoup HTTP server reachable without credentials.
Heap-based buffer overflow in dnsmasq's DNSSEC logging path enables remote denial of service against instances where both DNSSEC validation and query logging are simultaneously enabled. When dnsmasq receives a DS or DNSKEY DNS response containing an algorithm or digest type it does not recognize, its logging routine writes past the end of an internal heap-allocated buffer, corrupting memory and crashing the process. No public exploit code has been identified at time of analysis, and this CVE is not listed in the CISA KEV catalog; however, the network-deliverable attack vector (PR:N) makes the configuration prerequisite the primary limiting factor for defenders.
Use-after-free in 389 Directory Server's schema reload path crashes the server when administrative schema reloads race against active LDAP query worker threads. The `attr_syntax_swap_ht()` function bypasses the refcount-based deferred deletion mechanism used throughout the attribute syntax subsystem, directly freeing nodes that concurrent worker threads may still hold references to. Affected products span Red Hat Directory Server 11, 12, and 13 across RHEL 6 through 10; no public exploit or active exploitation (CISA KEV) has been identified at time of analysis, and the CVSS score of 5.0 reflects the high-complexity, high-privilege prerequisites that substantially reduce real-world risk.
Heap buffer overflow in 389 Directory Server's ACI parsing layer allows an authenticated LDAP user with write access to the `aci` attribute to silently corrupt heap memory in the directory server process by submitting a malformed Access Control Instruction string. The `__aclp__normalize_acltxt()` function in `aclparse.c` performs pointer arithmetic on the keyword portion of an ACI string without validating minimum remaining buffer length after whitespace stripping, resulting in a 1-byte out-of-bounds write followed by out-of-bounds reads (CWE-787). No public exploit or CISA KEV listing has been identified at time of analysis; an upstream fix is available via GitHub PR #7542 but a released patched version has not been independently confirmed.
Arbitrary file deletion in evolution-data-server's addressbook file backend exposes host filesystem to manipulation by a Flatpak application with D-Bus access. The vulnerability exploits split validation logic: a crafted URI embedding directory traversal sequences (e.g., '../') is accepted without sufficient sanitization during contact creation or modification, but when the same URI is later processed at deletion time, a second, less restrictive check fails to catch the traversal - allowing files outside the intended addressbook directory to be removed. Critically, deletion of Flatpak override files could be leveraged to silently weaken sandbox restrictions for subsequent application runs. No public exploit has been identified at time of analysis.
Use-after-free memory corruption in GnuTLS's PKCS#11 PIN management function `gnutls_pkcs11_token_set_pin` enables a local low-privileged attacker to crash the process and potentially corrupt memory on systems where PKCS#11 tokens are deployed without a protected authentication path. Affected deployments span Red Hat Enterprise Linux 6 through 10, Red Hat Hardened Images, and Red Hat OpenShift Container Platform 4, as confirmed by Red Hat (reporter) and covered under GnuTLS upstream advisory GNUTLS-SA-2026-04-29-9. No public exploit code has been identified at time of analysis, and the vulnerability is not listed in the CISA KEV catalog.
Denial of service in GStreamer's AV1 codec parser (gst-plugins-bad) allows a remote unauthenticated attacker to crash any application using GStreamer for AV1 media playback by delivering a specially crafted AV1 file. The root cause is a unit mismatch in the gst_av1_parser_parse_tile_list_obu() function, which feeds a byte count to an API expecting a bit count, desynchronizing the parser and triggering an assertion abort. No public exploit has been identified at time of analysis, and exploitation requires user interaction; however, the vulnerability affects Red Hat Enterprise Linux 6 through 10 where GStreamer is a core multimedia component.
Out-of-bounds read vulnerabilities in GStreamer's pcapparse element expose Red Hat Enterprise Linux 6 through 10 users to potential application crashes or limited memory disclosure when processing malformed PCAP files. The flaws reside in IPv4/TCP header parsing logic, where specially crafted PCAP records trigger reads beyond buffer boundaries across multiple code paths. Real-world exposure is materially constrained by pcapparse's restriction to debugging pipelines, the requirement for local user interaction, and high attack complexity; no public exploit or active exploitation has been identified at time of analysis.
Content injection in libreport's ABRT post-create event handler grants a low-privileged local user the ability to control file content that the root process writes into crash dump directories. When a monitored process crashes, the event handler script queries the systemd journal for matching log entries and writes the results directly to dump directory files without stripping embedded control characters - allowing an attacker who can write syslog messages to pre-position newline-delimited payloads that corrupt or inject arbitrary lines into those root-owned files. No public exploit code or CISA KEV listing has been identified at time of analysis, and exploitation is constrained to local access with low privileges.
Out-of-bounds heap write in QEMU's virtio-blk device allows a high-privileged guest to crash the host QEMU process. The flaw exists because the virtio-blk device omits validation of input descriptor sizes prior to writing data, enabling a malicious guest operator to submit a crafted virtio-blk SCSI request that writes beyond the allocated host heap buffer. The primary confirmed impact is a denial of service (DoS) of the QEMU process on the host; no public exploit code has been identified at time of analysis and it is not listed in the CISA KEV catalog.
Heap out-of-bounds read in MIT krb5's LDAP KDB plugin allows a compromised or malicious LDAP backend to crash the KDC or kadmind process, or leak heap memory. The flaw exists in berval2tl_data() within libkdb_ldap and is triggered when the LDAP server returns a krbExtraData attribute with bv_len less than 2, causing an unsigned integer underflow that drives a memcpy of up to 65,534 bytes from a near-zero-length source buffer. Exploitation requires prior control of the LDAP KDB backend server (PR:H, AC:H), constraining real-world risk to insider or supply-chain threat scenarios; no public exploit or CISA KEV listing exists at time of analysis.
Heap buffer overflow in Red Hat 389 Directory Server allows an authenticated Directory Manager or a compromised replication supplier to crash the server or corrupt heap memory by creating objectclass definitions with excessively long SUP (oc_superior) values. The flaw exists in schema serialization functions where the SUP field length is excluded from buffer size calculations yet still written via strcat(), producing an off-by-N heap overwrite. This is explicitly an incomplete fix variant of CVE-2025-14905, meaning organizations that patched that prior CVE may remain exposed if the SUP field code path was not remediated; no public exploit has been identified at time of analysis.
Heap buffer overflow in Red Hat Directory Server's audit logging subsystem allows an authenticated high-privilege attacker to corrupt heap memory and tamper with audit log output. The vulnerable function create_masked_entry_string() in auditlog.c writes a fixed-length password mask into a precisely-sized heap buffer without bounds checking, overflowing when a short cleartext password is processed. Exploitation requires two non-default preconditions - audit logging must be enabled AND either CLEAR password storage must be configured or a replication peer must already be compromised - limiting real-world exposure significantly. No public exploit identified at time of analysis, and this CVE is not listed in the CISA KEV catalog.
Stack buffer overflow in 389 Directory Server's pw.c checkPrefix() function allows a network-accessible Directory Manager to crash the LDAP server by storing a crafted credential with an oversized algorithm ID. The vulnerable code copies attacker-controlled input into a fixed 256-byte stack buffer without bounds checking when parsing reversible-encrypted attribute values. FORTIFY_SOURCE compiler hardening constrains impact to denial of service - preventing arbitrary code execution - but service disruption against a critical authentication infrastructure component remains operationally significant. No public exploit identified at time of analysis.
Uncontrolled CPU consumption in Red Hat 389 Directory Server's PBKDF2-SHA256 password storage plugin allows a highly privileged attacker who has write access to stored password hashes to craft a hash embedding an arbitrarily large iteration count, causing the LDAP server to exhaust CPU resources during any subsequent authentication attempt by the targeted user. Affected products span Red Hat Directory Server 11 through 13 and the 389-ds package as shipped across Red Hat Enterprise Linux 6 through 10. No public exploit has been identified at time of analysis, and active exploitation has not been confirmed by CISA KEV.
Denial-of-service in Red Hat's 389 Directory Server allows a highly privileged network attacker to crash the LDAP service by submitting a crafted password hash shorter than 16 bytes during authentication. The SMD5 password storage plugin performs an unsigned integer underflow (CWE-191) when computing salt length from this malformed input, producing a buffer over-read that terminates the server process. No public exploit code exists and this vulnerability has not been confirmed actively exploited (CISA KEV), but the impact is a complete loss of LDAP availability with low attack complexity once the required privilege level is achieved.
Heap buffer over-read in Red Hat Directory Server's ldap_utf8prev() function exposes LDAP deployments to potential confidentiality, integrity, and availability impact via crafted string filter input. The flaw affects authenticated, network-accessible LDAP servers running Red Hat Directory Server 11, 12, and 13 as well as the 389-ds component shipped across Red Hat Enterprise Linux 6 through 10. No public exploit identified at time of analysis and the vulnerability is not listed in CISA KEV; however, its presence in filter parsing logic - a core LDAP code path - warrants prompt patching in internet-exposed or multi-tenant directory environments.
Partial stack address disclosure in Red Hat 389 Directory Server (versions 11, 12, and 13) allows authenticated remote users to extract memory layout information via crafted LDAP extended operation requests. The root cause is a CWE-843 type confusion in the SSO token extended operation handler, which causes stack pointer data to bleed into LDAP response payloads. While the direct impact is limited to low-confidence information disclosure, leaked stack addresses are a classic ASLR-weakening primitive that could facilitate chained exploitation. No public exploit has been identified at time of analysis, and the vulnerability is not listed in CISA KEV.
Out-of-bounds read in 389 Directory Server's LDIF parser exposes limited heap memory to a highly privileged local attacker during database import operations. Exploitation requires local system access, high attack complexity, and high privileges (administrator-level), producing only minor confidentiality impact with no integrity or availability consequences. No public exploit identified at time of analysis and no KEV listing; the CVSS score of 1.9 reflects the extremely constrained exploitation conditions, making this a low operational priority absent specific threat model considerations.
Denial of service in Red Hat 389 Directory Server's Content Synchronization persistent search plugin enables authenticated network clients to exhaust server memory by initiating a sync operation and halting consumption of responses, causing unbounded queue growth until the server becomes unavailable. Compounding this, race conditions in the plugin's thread lifecycle management can independently trigger server crashes during connection teardown or graceful shutdown. Affected across Red Hat Directory Server 11, 12, and 13 as well as the bundled 389-ds-base package on RHEL 6 through 10. No public exploit identified at time of analysis and no CISA KEV listing.
Use-after-free read in X.Org X server and Xwayland's CreateSaverWindow() function exposes heap memory to local authenticated users, resulting in information disclosure. A low-privileged local X client can manipulate window attributes and force screen saver activation to trigger a read from freed memory, leaking potentially sensitive heap contents (C:H/I:N/A:N). No public exploit identified at time of analysis, and this vulnerability is not listed in CISA KEV; however, an upstream fix commit has been published and a Red Hat advisory is available.
Out-of-bounds read in X.Org X server and Xwayland's GLX extension handler `__glXDisp_ChangeDrawableAttributes()` allows a local low-privileged user to disclose sensitive memory contents from the X server process. Faulty size validation permits reading a client-controlled number of bytes beyond the request buffer boundary, resulting in high confidentiality impact per CVSS. A secondary write path exists in the same function but is gated behind byte-swapped client support, which is disabled by default, substantially limiting its practical exposure. No public exploit code and no CISA KEV listing have been identified at time of analysis.
Local privilege escalation in NetworkManager's dhclient backend allows a low-privileged local user to execute arbitrary OS commands with elevated privileges by supplying a crafted Manufacturer Usage Description (MUD) URL. Exploitation is strictly limited to systems where an administrator has explicitly reconfigured NetworkManager to use the dhclient backend - a non-default setting - meaning the vast majority of deployments are unaffected by design. CVSS 6.7 (local vector, high complexity, user interaction required) accurately reflects the constrained exploitation conditions; no public exploit code or CISA KEV listing exists at time of analysis.
GnuTLS's PKCS#7 padding validation during decryption is not implemented as a constant-time operation, creating a timing side-channel (CWE-208) that remote unauthenticated attackers can exploit to infer padding byte values on CBC-mode cipher suites. Affected deployments include GnuTLS as packaged across Red Hat Enterprise Linux 6 through 10, Red Hat Hardened Images, and Red Hat OpenShift Container Platform 4. Red Hat has issued patch RHSA-2026:20613; no active exploitation is confirmed in CISA KEV, and no public exploit code has been identified, but the network-reachable, no-auth-required attack surface warrants patching on systems handling sensitive encrypted traffic.
HTTP request smuggling in libsoup allows remote unauthenticated attackers to exploit an unsigned-to-signed integer conversion error in the `soup_body_input_stream_read_chunked()` function via a crafted HTTP request. The vulnerability is confined to specific proxy topologies where libsoup operates either behind or in front of a non-libsoup HTTP intermediary, and successful exploitation can result in authentication bypass, web cache poisoning, or unauthorized access. No public exploit has been identified at time of analysis and this CVE is not listed in CISA KEV, but the integrity and confidentiality impacts warrant urgent attention in any affected mixed-proxy deployment.
Denial of service in glib-networking allows a remote unauthenticated attacker to exhaust CPU resources in any application using the library's GnuTLS backend for certificate verification. By presenting a TLS certificate chain containing circular issuer relationships, the attacker triggers an unbounded loop (CWE-835) in the verification logic that never terminates. EPSS data was not provided; no public exploit code and no CISA KEV listing exist at time of analysis, placing this firmly in the 'monitor and patch' tier rather than emergency response.
Memory corruption via an off-by-one error in GnuTLS PKCS#12 bag element handling exposes any application using GnuTLS to remote unauthenticated denial of service - and potentially unspecified further impact - when a crafted PKCS#12 structure is parsed. The CVSS vector (AV:N/AC:L/PR:N/UI:N) confirms exploitation requires no authentication, no user interaction, and no elevated complexity, making internet-exposed services that parse client-supplied PKCS#12 inputs the primary risk surface. No public exploit code exists and the vulnerability is not listed in the CISA KEV catalog at time of analysis.
Out-of-bounds read in X.Org X Server XKB modifier map handling allows local authenticated attackers to read sensitive memory or crash the server by sending malformed X11 requests. The vulnerability affects RHEL 6 through 10 and requires local access with user-level privileges; exploitation results in information disclosure or denial of service.
Out-of-bounds read in X.Org X server XKB geometry processing allows local or remote attackers with X11 server access to disclose sensitive memory contents or cause denial of service by crashing the server. The vulnerability exists in CheckSetGeom() and XkbAddGeomKeyAlias functions and requires low privileges but no user interaction. No public exploit code or active exploitation has been identified at time of analysis.
GnuTLS with OCSP verification enabled incorrectly accepts revoked server certificates when presented with specially crafted multi-record OCSP responses during TLS handshakes, allowing attackers to bypass certificate revocation checks and establish connections to compromised servers. The vulnerability requires high attack complexity and specific OCSP configuration, affecting Red Hat Enterprise Linux 6-10, Red Hat Hardened Images, and OpenShift Container Platform 4. No public exploit code or active exploitation has been identified at the time of analysis.
HTTP request smuggling in libsoup's header parsing enables unauthenticated remote attackers to inject malformed requests containing multiple conflicting Content-Length headers, potentially bypassing security controls or poisoning shared connection state in two-tier deployments. The flaw resides in soup_message_headers_append_common() within libsoup/soup-message-headers.c, which blindly appends header values without validating for duplicate or contradictory Content-Length fields - a direct violation of RFC 7230. No active exploitation has been confirmed (not in CISA KEV), EPSS stands at 0.03% (8th percentile), and SSVC rates exploitation as none with partial technical impact, placing this firmly in the low-urgency tier despite its network-accessible attack vector.
WebKitGTK and WPE WebKit contain an API design flaw that allows untrusted web content to bypass the WebPage::send-request signal handler and perform unapproved network operations including IP connections, DNS lookups, and HTTP requests. The vulnerability affects applications across Red Hat Enterprise Linux 6-9 that rely on this signal to control network access. A remote attacker can trigger these bypassed requests via crafted web content with only user interaction (UI:R), resulting in limited confidentiality impact (C:L) without code execution.
Format string vulnerability in nano's statusline() function allows local users to trigger a segmentation fault via directory names containing printf specifiers, causing denial of service. Exploitation requires user interaction (opening a directory with the crafted name) on systems where nano is available to local users. No public exploit code identified at time of analysis.
The readelf utility in binutils is vulnerable to denial of service through null pointer dereference when processing specially crafted ELF files. A local attacker with limited privileges can trigger excessive resource consumption or program crashes by convincing a user to process a malicious ELF binary, affecting Red Hat Enterprise Linux 6, 7, 8, and 10. No public exploit code or active exploitation has been confirmed at this time.
Nano text editor creates ~/.local directory with overly permissive 0777 permissions instead of 0700 in environments with permissive umask settings, allowing local authenticated users to inject malicious .desktop launcher files that could lead to information disclosure or unintended actions when processed. CVSS score 2.5 reflects local attack vector and low integrity impact, with active exploitation status unknown and no public exploit code identified at time of analysis.
Buffer overflow in GIMP's file-seattle-filmworks plugin allows denial of service when a user opens a specially crafted Seattle Filmworks file. A remote attacker can deliver the malicious file via email or download, triggering a crash of the plugin and potentially impacting GIMP's stability. No active exploitation or public exploit code has been identified.
Denial of service in GIMP's PVR image loader on Red Hat Enterprise Linux 6 through 9 allows an attacker to crash the application by tricking a user into opening a specially crafted PVR file. The flaw arises from a stack-based buffer overflow and out-of-bounds read, causing the application to terminate unexpectedly. It is not known to be actively exploited; proof-of-concept code has not been publicly identified.
GIMP is vulnerable to a heap buffer over-read in the icns_slurp() function when processing malicious ICNS image files, potentially leading to application crashes or information disclosure. An attacker must trick a local user into opening a specially crafted file, with no known public exploit or active exploitation at this time. A vendor patch is available from Red Hat for affected RHEL distributions.
Denial of service in GIMP allows local attackers to crash the application by tricking a user into opening a malicious TIM image file. The vulnerability resides in the TIM image loader's 4BPP decoding path, where an unconditional stack buffer overflow occurs when processing a specially crafted file, with no impact on confidentiality or integrity. No active exploitation or public exploit is known, and a vendor patch is available.
GIMP's FITS image loader contains an integer overflow that can be triggered by a specially crafted file, leading to a heap buffer overflow and potential denial of service or arbitrary code execution. The vulnerability is patched by the vendor, and no active exploitation or public exploit code has been identified.
Local denial of service in SSSD's PAM passkey responder allows a low-privileged attacker to crash the daemon by sending crafted passkey authentication data, disrupting authentication services on affected Red Hat Enterprise Linux and OpenShift systems. The vulnerability is not known to be actively exploited, and its EPSS score is negligible (0.01%).
Local man-in-the-middle and SSH security downgrade in libssh on Windows stems from the library automatically loading configuration files from C:\etc, a directory that any unprivileged local user can create and populate. By planting a malicious config, an attacker can manipulate trusted host data and weaken SSH cryptographic negotiation, compromising the confidentiality, integrity, and availability of SSH sessions established by applications linking libssh. There is no public exploit identified at time of analysis, EPSS is negligible (0.01%), and it is not in CISA KEV.
Libarchive's archive_acl_from_text_nl() function fails to validate malformed ACL strings before dereferencing pointers, allowing local attackers to crash applications that process untrusted archives via specially crafted ACL fields. This NULL pointer dereference results in denial of service with high availability impact. CVSS 5.5 reflects local attack vector and user interaction requirement; no public exploit code or active exploitation confirmed at analysis time.
Tar archive extraction allows hidden file injection by local authenticated users through crafted malicious archives, bypassing pre-extraction inspection mechanisms and enabling introduction of attacker-controlled files. The vulnerability affects Red Hat Enterprise Linux versions 6 through 10, requires local access and user interaction (extraction action), and presents a moderate integrity risk (CVSS 5.0) with no confirmed active exploitation or public proof-of-concept at time of analysis.
Heap-based out-of-bounds read in libtheora's AVI parser allows local attackers with limited privileges to trigger application crashes or leak heap memory via specially crafted AVI files with truncated header sub-chunks. The vulnerability affects Red Hat Enterprise Linux versions 6 through 10 and requires user interaction (opening a malicious file), with real-world impact limited to denial-of-service and potential information disclosure rather than code execution.
Libsoup transmits sensitive session cookies in cleartext within HTTP CONNECT requests when establishing HTTPS tunnels through configured HTTP proxies, allowing network-positioned attackers or malicious proxies to intercept and hijack user sessions. The vulnerability affects Red Hat Enterprise Linux versions 6 through 10 and carries a CVSS 5.9 score with high confidentiality impact; no public exploit code or confirmed active exploitation has been identified at the time of analysis.
libssh attempts to open arbitrary files during configuration parsing, allowing local attackers with limited privileges to trigger a denial of service by forcing access to dangerous files such as block devices or large system files. The vulnerability affects Red Hat Enterprise Linux versions 6, 7, 8, 9, and 10, as well as Red Hat OpenShift Container Platform 4, and requires local access with low privileges to exploit. No public exploit code or active exploitation has been confirmed at the time of analysis.
libssh's match_pattern() function is vulnerable to ReDoS (Regular Expression Denial of Service) attacks when processing maliciously crafted hostnames in client configuration or known_hosts files, allowing local attackers with limited privileges and user interaction to trigger inefficient regex backtracking that exhausts system resources and causes client-side timeouts. The vulnerability affects Red Hat Enterprise Linux 6-10 and OpenShift Container Platform 4, with CVSS 2.2 reflecting low severity due to local attack vector and high complexity requirements, though the denial of service impact warrants attention in environments where SSH client availability is critical.
Libssh versions used across Red Hat Enterprise Linux 6-10 and OpenShift Container Platform 4 are vulnerable to a null pointer dereference when processing malformed 'longname' fields in SFTP SSH_FXP_NAME messages, allowing unauthenticated remote attackers to trigger denial of service through application crashes. The attack requires user interaction and high attack complexity (CVSS 3.1, CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L) but affects a widely deployed SSH library; no public exploit identified at time of analysis.
SCP client implementations across Red Hat Enterprise Linux 6-10 and OpenShift Container Platform 4 are vulnerable to path traversal during file transfer, allowing a malicious SCP server to write files outside the designated working directory and potentially execute arbitrary code or modify system configuration. This vulnerability mirrors CVE-2019-6111 in OpenSSH; unauthenticated remote attackers can exploit it with high user interaction (the victim must initiate an SCP connection to a malicious server), resulting in confidentiality, integrity, and availability compromise. No public exploit code or active exploitation has been confirmed at the time of analysis.
A security vulnerability in A flaw (CVSS 4.3). Remediation should follow standard vulnerability management procedures.
GIMP's PSP file parser fails to validate 32-bit length values in the read_creator_block() function, allowing local attackers to trigger integer overflow and heap buffer overflow via specially crafted PSP image files, resulting in application-level denial of service. Red Hat Enterprise Linux versions 6-9, Ubuntu (7 releases), Debian (9 releases), and SUSE are affected. No public exploit code or active exploitation has been identified at the time of analysis, though the vulnerability has been assigned ENISA EUVD ID EUVD-2026-16340 and tracked across major Linux distributions.
libsoup's SoupServer contains a use-after-free vulnerability in the soup_server_disconnect() function that prematurely frees connection objects while TLS handshakes are pending, allowing remote unauthenticated attackers to trigger a server crash via denial of service when a handshake completes after memory deallocation. The vulnerability affects Red Hat Enterprise Linux versions 6, 7, 8, 9, and 10, as well as Ubuntu and Debian distributions across multiple releases. No public exploit code or active exploitation has been confirmed at the time of analysis.
A security vulnerability in An incomplete fix for CVE-2024-47778 (CVSS 5.1) that allows an out-of-bounds read. Remediation should follow standard vulnerability management procedures.
A specially crafted XCOFF object file can trigger an out-of-bounds memory read in the GNU Binutils BFD library due to improper validation of relocation type values. This affects Red Hat Enterprise Linux versions 6 through 10 and Red Hat OpenShift Container Platform 4, potentially allowing local attackers with user interaction to crash affected tools or disclose sensitive memory contents. While not currently listed in CISA KEV as actively exploited, the vulnerability is tracked across Red Hat, Sourceware, and Bugzilla with upstream references indicating visibility and likely patch development.
HTTP/2 server implementations in libsoup across Debian and Red Hat Enterprise Linux versions contain a use-after-free vulnerability that allows unauthenticated remote attackers to trigger application crashes through specially crafted requests. Exploitation results in denial of service by forcing the application to access freed memory, causing instability. No patch is currently available for this medium-severity flaw.
A security vulnerability in A flaw (CVSS 3.9). Remediation should follow standard vulnerability management procedures.
A flaw was found in libsoup, a library used by applications to send network requests.
A security vulnerability in A flaw (CVSS 3.9). Remediation should follow standard vulnerability management procedures.