Red Hat Enterprise Linux 8

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.

Heap buffer overflow in GNOME localsearch (formerly tracker-miners) tracker-extract-mp3 component on Red Hat Enterprise Linux 8/9/10, Ubuntu, Debian, and SUSE allows remote attackers to trigger an out-of-bounds heap read by delivering a malformed MP3 file with crafted ID3 performer tags, leading to crashes (DoS) or disclosure of process memory contents. No public exploit identified at time of analysis, and the EPSS score of 0.19% (9th percentile) plus CISA SSVC 'Exploitation: none' indicate low real-world exploitation activity despite the 8.1 CVSS rating. Vendor patches are available across Red Hat (RHSA), Ubuntu USN-8019-1, Debian, and SUSE-SU-2026:0780/21854.

Heap buffer overflow in GNOME localsearch's tracker-extract-mp3 component enables a local attacker to crash the metadata extraction daemon and potentially disclose heap memory contents by supplying a specially crafted MP3 file with malformed ID3v2.3 COMM tags. Affected platforms confirmed by Red Hat include RHEL 8, 9, and 10, where GNOME localsearch (formerly tracker-miners) runs as a background desktop search indexing service. No public exploit code and no active exploitation (CISA KEV) have been identified at time of analysis; exploitation is further constrained by the requirement for local access, low privileges, and user interaction.

Out-of-bounds read in the tracker-extract-mp3 component of GNOME localsearch (formerly tracker-miners) allows a low-privileged local user to trigger an application crash or leak sensitive process memory when the indexer parses a specially crafted MP3 file. Affected deployments include Red Hat Enterprise Linux 8, 9, and 10 running the GNOME desktop stack. No public exploit or active exploitation has been identified at time of analysis, though the file-based delivery mechanism - providing a malicious MP3 to a system where localsearch auto-indexes media - keeps realistic attacker reach higher than the AV:L vector alone implies.

Heap out-of-bounds read in GNOME localsearch (formerly tracker-miners) MP3 Extractor affects Red Hat Enterprise Linux 8, 9, and 10, exploitable when a local user triggers indexing of a specially crafted MP3 file containing malformed ID3v2.4 tags. The missing bounds check in the `extract_performers_tags` function can cause a Denial of Service via an unmapped memory read, and in certain heap layout scenarios may also leak fragments of heap memory, resulting in limited information disclosure. No public exploit code has been identified at time of analysis and this 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 in GStreamer's VMnc decoder allows remote attackers to crash the application or disclose memory contents when a victim opens a maliciously crafted VMnc video file. The flaw stems from a signed integer overflow in payload-size arithmetic that bypasses a length check when cursor dimensions are abnormally large. No public exploit identified at time of analysis, and the issue is not listed in CISA KEV.

Heap buffer overflow in GStreamer's librfb (RFB/VNC client) allows a malicious VNC server to corrupt heap memory on a connecting client, potentially leading to remote code execution or denial of service. The flaw stems from validating rectangle area instead of individual dimensions, letting attacker-controlled rectangles extend beyond the framebuffer. No public exploit identified at time of analysis, though the issue affects GStreamer as shipped across Red Hat Enterprise Linux 6 through 10.

Out-of-bounds read and denial-of-service in GStreamer's RealMedia demuxer (gst-plugins-ugly) allows remote attackers to crash, hang, or potentially leak limited adjacent memory when a victim opens a maliciously crafted RealMedia (.rm) file. The flaw stems from unvalidated offsets in re_skip_pascal_string() and an attacker-controlled loop counter in the FILEINFO metadata parser. No public exploit identified at time of analysis, and the CVE is not on the CISA KEV list.

Out-of-bounds read in the GStreamer RealMedia demuxer (gst-plugins-ugly) allows a maliciously crafted .rm file to crash the consuming application and potentially leak small amounts of adjacent heap memory through stream metadata. The flaw affects Red Hat Enterprise Linux 7, 8, 9, and 10 systems shipping the vulnerable demuxer, and exploitation requires a user to open or otherwise process the file (UI:R). There is no public exploit identified at time of analysis, and the issue is not on the CISA KEV list.

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.

Heap memory corruption in the WavPack audio decoder of GStreamer's gst-plugins-good package allows remote attackers to crash applications or potentially achieve arbitrary code execution when a victim opens a malicious WavPack (.wv) audio file. The flaw, tracked as CVE-2026-53705 and reported by Red Hat, affects Red Hat Enterprise Linux versions 7, 8, 9, and 10, and stems from an integer overflow during buffer size calculation that produces an undersized heap allocation later overrun by decoded samples. There is no public exploit identified at time of analysis and the issue is not listed in CISA KEV, but the multimedia decoder attack surface combined with RCE potential makes it a meaningful patching priority.

Out-of-bounds read in the VA JPEG decoder shipped in GStreamer's gst-plugins-bad allows a remote attacker to crash the decoder or potentially leak adjacent memory contents when a victim opens a maliciously crafted JPEG file. The flaw stems from the JPEG parser trusting a segment-length value from the bitstream without verifying it fits within the buffer, and affects Red Hat Enterprise Linux 6 through 10 where the plugin is consumed. There is no public exploit identified at time of analysis and the issue is not in CISA KEV.

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.

Local privilege escalation via arbitrary root-owned file overwrite affects libreport's ABRT post-create event handler scripts on Red Hat Enterprise Linux 6, 7, and 8. The event scripts write output using shell redirections that lack the O_NOFOLLOW flag, so a local low-privileged user who plants a symlink in a writable crash-dump path can cause the root shell to follow it and clobber any file on the system, which can be leveraged for full system compromise. SSVC rates technical impact as total, but there is no public exploit identified at time of analysis and EPSS is negligible (0.02%, 5th percentile).

Local privilege escalation in the abrt-dbus D-Bus service on Red Hat Enterprise Linux 6, 7, and 8 allows a low-privileged local user to race the ChownProblemDir method against still-running post-create event handlers. By invoking ChownProblemDir while privileged event scripts hold a write lock on the dump directory, the attacker gains filesystem ownership of files being written by root-context handlers, enabling tampering with privileged output and potential privilege escalation. No public exploit identified at time of analysis, and the issue is not listed in CISA KEV.

Local privilege escalation in the abrt-dbus D-Bus service on Red Hat Enterprise Linux 6, 7, and 8 allows any unprivileged local user to win a TOCTOU race against the SetElement method, writing arbitrary text files into root-owned dump directories. By exploiting the gap between dump directory creation and post-create event execution, an attacker bypasses package validation and persists crash data for unpackaged binaries inside privileged paths, with no public exploit identified at time of analysis.

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.

Stack buffer overflow in GStreamer's H.265/HEVC codec parser (gst-plugins-bad) allows remote unauthenticated attackers to crash GStreamer-based applications by delivering a crafted H.265 video file or stream that a user opens. The root cause is an incorrect loop bound in the buffering period SEI message parser: the parser mistakenly uses cpb_cnt_minus1[i] (the current loop index variable) rather than cpb_cnt_minus1[0] from the referenced Sequence Parameter Set, causing the loop to iterate beyond the bounds of stack-allocated CPB delay arrays and corrupt stack memory. No public exploit has been identified at time of analysis and the vulnerability is not listed in CISA KEV, though the deterministic parser logic makes crash reproduction straightforward.

Out-of-bounds write in GStreamer's H.266/VVC PPS picture partition parser (`gst-plugins-bad`) allows an attacker to crash media-processing applications - and potentially achieve code execution - by delivering a crafted H.266/VVC media file. The flaw in `gst_h266_parser_parse_picture_partition()` (gsth266parser.c) permits unbounded slice index increments across three fixed-size arrays in `GstH266PPS` during multi-slice-in-tile processing. A proof-of-concept demonstrating at least a 4-byte write exists; no public exploit beyond that initial POC or CISA KEV listing has been identified at time of analysis, though the code structure permits larger writes across multiple iterations which elevates downstream risk above a pure DoS assessment.

Heap buffer overflow in 389 Directory Server (389-ds-base) SASL I/O layer allows authenticated remote attackers to crash the LDAP service or achieve remote code execution after a successful SASL bind with integrity protection (SSF > 0). The flaw stems from an integer overflow in sasl_io_start_packet() that bypasses the nsslapd-maxsasliosize ceiling, enabling roughly 2 MB of attacker-controlled heap corruption. No public exploit identified at time of analysis, and the impact is amplified in FreeIPA and Red Hat Identity Management deployments where any enrolled user, host, or service principal qualifies as an authenticated attacker.

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.

Root command injection in dracut's legacy DHCP path allows adjacent-network attackers to execute arbitrary commands inside the initramfs by sending crafted DHCP options (e.g., malicious hostname) that are written unescaped into temporary shell scripts. The flaw affects Red Hat Enterprise Linux 6 through 10, Red Hat Hardened Images, and OpenShift Container Platform 4, granting full system compromise during early boot. No public exploit identified at time of analysis, and EPSS is low (0.16%, 36th percentile), but SSVC rates technical impact as total.

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.

Remote denial of service in 389 Directory Server (Red Hat Directory Server 11/12/13 and Red Hat Enterprise Linux 6 through 10) allows unauthenticated network attackers to crash the LDAP daemon by exploiting an unchecked BER structure allocation in the dereference control plugin when the host is under memory pressure. No public exploit identified at time of analysis, and EPSS exploitation probability is very low (0.09%, 25th percentile), but the unauthenticated network-reachable nature warrants prompt patching of internet-facing or business-critical directory services.

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.

Out-of-bounds heap write in X.Org X server and Xwayland DRI2 buffer handling allows a local authenticated client to corrupt server memory by requesting multiple DRI2BufferBackLeft attachments alongside one DRI2BufferFrontLeft. Successful exploitation crashes the display server or, when the X server runs setuid root (a still-common legacy deployment), enables local privilege escalation to root. No public exploit is identified at time of analysis and the issue is not listed in CISA KEV.

Local privilege escalation in the X.Org X server and Xwayland arises from a use-after-free in SyncChangeCounter() that a local authenticated attacker can trigger by orchestrating two client connections - one creating multiple SyncCounters, the other destroying them while they are being changed. On systems where the X server still runs as root (common on legacy Linux setups), successful exploitation yields root code execution; at minimum it crashes the display server. No public exploit identified at time of analysis, but the bug is confirmed by Red Hat and a fix has landed upstream in xserver.

Local privilege escalation in the X.Org X server and Xwayland arises from a use-after-free in FreeCounter() when SyncCounter objects are destroyed across multiple client connections. Authenticated local attackers on affected Red Hat Enterprise Linux 6 through 10 systems can crash the server or escalate to root when the X server runs with elevated privileges. No public exploit identified at time of analysis, and the issue is not listed in CISA KEV.

Local privilege escalation in X.Org X server and Xwayland stems from an incomplete fix for CVE-2025-26597, where CheckKeyTypes() fails to clamp non-canonical key types to XkbMaxShiftLevel, enabling stack-based buffer overflows. Authenticated local users on Red Hat Enterprise Linux 6 through 10 can crash the display server or, when X runs as root, escalate to root privileges. No public exploit identified at time of analysis, though the upstream commit reveals the vulnerable code path and the prior CVE-2025-26597 has known exploitation history.

Stack-based buffer overflow in X.Org X server and Xwayland's _XkbSetMapChecks() function allows local authenticated attackers to crash the server or potentially escalate privileges to root when the X server runs with elevated privileges. The flaw resides in CheckKeyTypes() writing to a fixed mapWidths[256] stack buffer at a client-controlled offset, affecting Red Hat Enterprise Linux versions 6 through 10. No public exploit identified at time of analysis, but an upstream fix has been merged into the xserver repository.

Local privilege escalation in the X.Org X server and Xwayland stems from a stack-based buffer overflow during font alias resolution, where a 256-byte server-side stack buffer is overrun by libXfont2 alias target names of up to 1023 bytes. An authenticated local attacker who can influence font alias files can crash the server or, when the X server runs as root, escalate to root privileges. No public exploit is identified at time of analysis and CVSS is 7.8 (Local/Low complexity/Low privileges).

Local privilege escalation in X.Org X server and Xwayland enables authenticated local users to trigger a use-after-free in miSyncDestroyFence() by racing two client connections against a shared fence object. Successful exploitation can crash the display server or escalate privileges to root when the X server runs as root, which remains common on legacy and embedded Linux deployments. No public exploit identified at time of analysis, but an upstream fix has been committed by the X.Org maintainers.

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.

Stack-based buffer overflow in rrdcached (the caching daemon for rrdtool) allows a local attacker with socket access to crash the daemon or potentially execute arbitrary code by sending an oversized CREATE request. The flaw is tracked under CWE-121 with a CVSS 3.1 base score of 7.8 (AV:L/AC:L/PR:L), reported by Red Hat against RHEL 6 through 10, and there is no public exploit identified at time of analysis.

Local code execution in Poppler's Splash rendering backend allows attackers to compromise applications that open attacker-supplied PDFs by triggering an integer overflow in tilingPatternFill that produces an undersized heap allocation and a subsequent out-of-bounds write. The flaw affects Poppler as shipped across Red Hat Enterprise Linux 6 through 10 and Red Hat Hardened Images, with impact including arbitrary code execution, information disclosure, or denial of service in the rendering process. No public exploit identified at time of analysis, and the CVSS 7.8 vector requires user interaction to open a malicious PDF.

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.

Command injection in the rpmuncompress utility of RPM allows local attackers to execute arbitrary commands when a victim extracts a maliciously crafted ZIP, 7z, or GEM archive whose top-level folder name contains shell metacharacters. The flaw affects Red Hat Enterprise Linux 6 through 10 and downstream products including OpenShift Container Platform 4, Satellite 6, Red Hat Hardened Images, and Quarkus Native Builder. No public exploit identified at time of analysis, and the issue requires user interaction with an attacker-supplied archive, but successful exploitation yields full code execution under the extracting user's identity.

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.

Certificate validation bypass in GnuTLS (as shipped in Red Hat Enterprise Linux 6 through 10, OpenShift Container Platform 4, and Red Hat Hardened Images) lets a remote attacker defeat hostname verification: when a certificate carries an oversized Subject Alternative Name, the library incorrectly abandons SAN matching and falls back to the legacy Common Name field, accepting certificates it should reject. An attacker positioned to intercept traffic can present such a certificate to impersonate a trusted server and conduct spoofing or man-in-the-middle attacks against TLS clients that rely on GnuTLS. There is no public exploit identified at time of analysis, no CISA KEV listing, and no EPSS score in the provided data.

Improper certificate validation in GnuTLS (CWE-295) lets a remote attacker defeat TLS hostname verification by presenting a certificate that carries URI or SRV Subject Alternative Names, causing GnuTLS to incorrectly fall back to matching the connection's DNS hostname against the certificate's Common Name (CN) and enabling service spoofing or man-in-the-middle interception of sensitive data. The flaw was reported by Red Hat against GnuTLS as shipped in Red Hat Enterprise Linux 6 through 10, OpenShift Container Platform 4, and Red Hat Hardened Images, and carries a CVSS 3.1 base score of 7.1 driven by high integrity impact. No public exploit has been identified at time of analysis and the issue is not listed in CISA KEV; exploitation requires the victim to initiate a connection to attacker-controlled infrastructure (UI:R).

Information disclosure and denial of service in GnuTLS (libgnutls) let a remote, unauthenticated attacker trigger a heap overread against TLS servers that perform legacy RSA key exchange using a private key backed by a PKCS#11 token. By sending an abnormally short premaster secret, the attacker causes the library to read beyond an allocated buffer (CWE-1284), which can leak a small amount of adjacent heap memory and, per the CVSS vector, more strongly impacts availability (A:H). No public exploit has been identified at time of analysis and the issue is not in CISA KEV; EPSS and SSVC data were not provided.

Heap buffer overflow in libsolv allows local attackers to corrupt memory when a vulnerable application processes a maliciously crafted .solv repository metadata file. The flaw stems from insufficient input validation during decompression of attacker-controlled data, enabling information disclosure, control-flow alteration, or denial of service across multiple Red Hat Enterprise Linux releases and SUSE distributions. SSVC marks exploitation as PoC-level with total technical impact, while EPSS remains very low at 0.01%, indicating limited probability of widespread exploitation despite high severity.

Remote code execution in Samba's printing subsystem allows remote attackers to inject arbitrary shell commands via crafted print job descriptions. The flaw stems from unescaped expansion of the client-controlled '%J' substitution token into the configured 'print command', enabling shell metacharacter injection. No public exploit has been identified at time of analysis, and EPSS scores exploitation probability at only 0.08%, but CVSS 9.0 with scope change reflects high potential impact on any Samba host exposing print services.

Remote code execution in Cockpit's system logs UI allows authenticated users to inject shell metacharacters into unsanitized URL parameters, executing arbitrary commands on RHEL 7/8/9/10 hosts. Attack requires low-complexity exploitation by a logged-in user who can craft malicious links targeting the logs interface. No public exploit identified at time of analysis, though the vulnerable code section is publicly accessible on GitHub. EPSS data not available; CVSS 8.0 reflects high impact across confidentiality, integrity, and availability if user interaction occurs.

Certificate validation in GnuTLS can be bypassed when a certificate chain contains Certificate Authorities with only excluded name constraints followed by CAs with permitted name constraints. Remote attackers can exploit this flaw (CVSS 7.4, AV:N/AC:H) to present invalid certificates that pass validation, enabling man-in-the-middle attacks or service impersonation against TLS-protected communications. The vulnerability affects Red Hat Enterprise Linux versions 6-10, OpenShift Container Platform 4, and Red Hat Hardened Images. No public exploit or active exploitation confirmed at time of analysis, though the technical nature suggests targeted attacks against high-value certificate infrastructure are feasible.

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.

Heap buffer overflow in GnuTLS DTLS handshake allows remote unauthenticated attackers to crash applications or corrupt memory. The vulnerability stems from inconsistent fragment validation in merge_handshake_packet(), where attackers can send crafted DTLS fragments with conflicting message_length values to trigger out-of-bounds writes. Red Hat reported this affecting RHEL 6-10 and OpenShift Container Platform 4. CVSS 7.5 (High) reflects network-accessible denial of service, though memory corruption may enable further exploitation. No EPSS data, KEV status, or POC availability reported at time of analysis, but the remote unauthenticated attack vector (AV:N/PR:N) and low complexity (AC:L) make this a priority for systems using DTLS.

Out-of-bounds read in the GnuTLS DTLS handshake reassembly logic lets remote unauthenticated attackers trigger an integer underflow by sending malformed handshake fragments with zero length and a non-zero offset, enabling information disclosure or denial of service against Red Hat-shipped GnuTLS (RHEL 6 through 10, OpenShift Container Platform 4, and Red Hat Hardened Images). Reported by Red Hat with a vendor patch available and errata released; no public exploit identified at time of analysis, and EPSS is very low (0.04%, 11th percentile) with SSVC exploitation status 'none'. CVSS 9.1 reflects high confidentiality and availability impact over the network at low complexity without authentication.

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.

Certificate name-constraints bypass in GnuTLS allows a remote attacker to craft a leaf certificate whose Subject Alternative Name differs only in letter casing from a constrained dNSName or rfc822Name, causing GnuTLS to accept a certificate that its excludedSubtrees/permittedSubtrees policy should reject. The flaw stems from case-sensitive comparison of name-constraint labels and enables unauthorized access, impersonation, or information disclosure across software (notably Red Hat Enterprise Linux 6-10 and OpenShift Container Platform 4) that relies on GnuTLS for X.509 validation. SSVC notes a public proof-of-concept exists, though EPSS exploitation probability is very low (0.03%, 9th percentile) and the issue is not in CISA KEV.

Denial of service in libxml2 allows a remote attacker to crash any application that uses the library to XSD-validate an attacker-supplied XML document containing an internal entity reference. The flaw is a CWE-843 type confusion triggered during schema validation, affecting a wide range of Red Hat products that ship libxml2. No public exploit identified at time of analysis, and EPSS is very low (0.01%, 3rd percentile), consistent with SSVC exploitation status of 'none'.

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.

Out-of-bounds memory read in the X.Org X server's XKB key types request handling allows a local, authenticated client to disclose adjacent server memory or crash the server (DoS), with higher-impact outcomes possible in certain configurations. The flaw affects the X server component shipped across Red Hat Enterprise Linux 6 through 10 and corresponding SUSE releases, and stems from missing bounds validation on an XKB request. There is no public exploit identified at time of analysis, EPSS is negligible (0.01%), and CISA/SSVC records no known exploitation.

Local privilege-relevant memory corruption in the X.Org X server arises from a use-after-free in the XSYNC fence-triggering path (miSyncTriggerFence()), letting any client with a connection to the display crash the server or corrupt heap memory without user interaction. Rated CVSS 7.8 with total technical impact per CISA SSVC, it currently shows no public exploit identified at time of analysis, no CISA KEV listing, and a very low EPSS of 0.01% (3rd percentile). Because the X server frequently runs with elevated privileges, successful memory corruption could escalate beyond denial of service.

Memory-disclosure and denial-of-service in the X.Org X server arises from an integer underflow (CWE-191) in the XKB compatibility map handling, which lets a client with local or remote X11 access trigger an out-of-bounds buffer read. Any attacker able to open a connection to the display server can crash it or read adjacent server memory, with Red Hat and SUSE rating the technical impact as total; no public exploit identified at time of analysis and EPSS is negligible (0.01%, 2nd percentile). This was reported by Red Hat and affects the X server shipped across Red Hat Enterprise Linux 6 through 10.

Uninitialized variable usage in OpenSC's libopensc library enables information disclosure and denial of service when processing specially crafted responses from malicious USB devices or smart cards. Attackers must physically present a crafted USB or smart card device to trigger the vulnerability, which reads uninitialized memory from the stack or heap, potentially exposing sensitive data or causing application crashes. No public exploit code has been identified at time of analysis.

Heap buffer overflow in GNU Binutils XCOFF linker allows arbitrary code execution when a local user processes a malicious object file. Red Hat Enterprise Linux versions 6 through 10 are confirmed affected via CPE data. CVSS 7.8 reflects local attack vector requiring user interaction (opening/linking the crafted file). No active exploitation confirmed (not in CISA KEV), and no public proof-of-concept identified at time of analysis. Real-world risk depends heavily on whether development workflows involve linking untrusted XCOFF files, which is uncommon outside AIX/PowerPC cross-compilation scenarios.

The readelf utility in binutils is vulnerable to denial of service through two distinct flaws triggered by maliciously crafted ELF files: a resource exhaustion vulnerability (CWE-400) causing out-of-memory conditions and a null pointer dereference (CWE-476) causing segmentation faults. Both vulnerabilities require local access and user interaction to open a malicious file, resulting in the readelf utility crashing or becoming unresponsive. No public exploit code or active exploitation has been identified at the time of analysis.

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.

Out-of-bounds write in dnsmasq's DHCP split-relay handler allows remote unauthenticated denial of service via crafted BOOTREPLY packets. Affects Red Hat Enterprise Linux 6-10 and OpenShift Container Platform 4 when dnsmasq runs with the --dhcp-split-relay option enabled. CVSS 7.5 (AV:N/AC:L/PR:N/UI:N) indicates trivial network exploitation, but real-world risk is mitigated by the non-default configuration requirement. No public exploit or active exploitation (CISA KEV) confirmed at time of analysis, though CWE-787 (out-of-bounds write) primitives are well-understood by attackers.

Buffer overflow in GIMP's GIF image loading component allows arbitrary code execution when a victim opens a specially crafted GIF file. This local‑attack vulnerability (CVSS 3.1: AV:L/PR:N/UI:R) can lead to full compromise of the user's session. No public exploit has been identified, and EPSS exploitation probability is very low (0.01 %).

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%).

Remote unauthenticated attackers can crash GnuTLS servers by sending malformed TLS handshake messages containing invalid Pre-Shared Key binder values, triggering a NULL pointer dereference. Red Hat Enterprise Linux versions 6-10, OpenShift Container Platform 4, and Red Hat Hardened Images are affected. Vendor patches are available. EPSS score of 0.08% (24th percentile) suggests low current exploitation probability despite network-accessible attack vector. SSVC framework classifies this as automatable with partial technical impact but no known exploitation, making this a medium-priority patching target focused on preventing service disruption rather than data breach.

Local privilege escalation in libcap's cap_set_file() function affects Red Hat Enterprise Linux 6 through 10 and OpenShift Container Platform 4, where a TOCTOU race condition allows an unprivileged user with write access to a parent directory to redirect file capability updates onto an attacker-controlled file. Successful exploitation can inject or strip Linux file capabilities on arbitrary executables, yielding full privilege escalation on the host. No public exploit identified at time of analysis and EPSS is 0.01%, but a vendor patch is available.

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.

Remote code execution in Cockpit's web interface allows unauthenticated attackers to execute arbitrary commands on the host system by injecting malicious SSH options through the login endpoint. Affecting Red Hat Enterprise Linux versions 7 through 10, this critical pre-authentication vulnerability (CVSS 9.8) requires no credentials and executes code before any authentication checks occur. EPSS data not available; no confirmed active exploitation (CISA KEV) at time of analysis, though the pre-authentication nature and command injection vector present severe risk for internet-exposed Cockpit instances.

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.

Improper hostname canonicalization in util-linux login(1) utility with the -h option allows remote attackers to bypass host-based PAM access control rules by supplying specially crafted hostnames that are modified before being passed to PAM_RHOST, potentially leading to unauthorized access. The vulnerability affects Red Hat Enterprise Linux 7 through 10 and related products; exploitation requires high attack complexity but no authentication or user interaction. No public exploit code has been identified, and this is not currently confirmed as actively exploited.