CVE-2026-121994

Gdb: gdb: stack buffer overflow in fetch_register_using_p via unchecked p-reply length

A stack buffer overflow in the GDB client's remote protocol handler allows an attacker-controlled debug target to execute arbitrary code in the GDB process. The vulnerability exists in fetch_register_using_p, which decodes a stub's register reply into an alloca-sized buffer without bounding writes by the register width.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Enterprise Linux Enterprise Linux Hardened Images and 2 more

CVE-2026-9150

Libsolv: stack-based buffer overflow in libsolv's debian metadata parser when handling sha384/sha512 checksums

A flaw was found in libsolv. This stack-based buffer overflow vulnerability occurs in libsolv's Debian metadata parser when processing specially crafted Debian repository metadata. An attacker could exploit this by providing malicious SHA384 or SHA512 checksum tags, leading to memory corruption and a denial of service (DoS) in the affected system.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Opensuse Red Hat Redhat

Products

Libsolv Red Hat Satellite 6 Enterprise Linux and 10 more

CVE-2026-9149

Libsolv: heap buffer overflow in libsolv repo_add_solv via negative maxsize from crafted .solv file

A flaw was found in libsolv. This heap buffer overflow vulnerability occurs when a victim processes a specially crafted `.solv` file containing negative size values in the `repo_add_solv` function. This leads to an undersized memory allocation and a subsequent out-of-bounds write. An attacker could exploit this to cause a denial of service (DoS).

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Opensuse Red Hat Redhat

Products

Libsolv Red Hat Satellite 6 Enterprise Linux and 11 more

CVE-2026-14164

Libarchive: double-free vulnerability in rar5 decompression logic via dangling filtered_buf pointer in init_unpack()

A double free issue has been identified in libarchive's RAR5 reader. During parsing of a specially crafted RAR5 archive, the filtered_buf pointer may remain stale after being freed during unpacking state reinitialization. Subsequent processing of another archive entry can trigger a second free of the same memory region, resulting in a double-free condition. Successful exploitation may cause applications using the vulnerable libarchive API to terminate unexpectedly, leading to a denial of service.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Libarchive Red Hat Redhat

Products

Libarchive Enterprise Linux Ai Inference Server and 13 more

CVE-2026-120194

Json-glib: json-glib: infinite loop in json_path_query() with negative jsonpath slice step

A flaw was found in json-glib. The JSONPath slice evaluator used by json_path_query() can enter an infinite loop when given a slice expression with a negative step. An application that evaluates attacker-controlled JSONPath expressions can be forced into a hang, leading to a denial of service.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Json-glib Red Hat Redhat

Products

Json-glib Enterprise Linux Enterprise Linux and 4 more

CVE-2026-121997

Gdb: gdbserver: heap buffer overflow in cmd_qtdpsrc via qtdpsrc declared/actual length mismatch

A heap buffer overflow in gdbserver's QTDPsrc packet handler allows an unauthenticated remote attacker to achieve native code execution in the gdbserver process. The vulnerability results from a mismatch between a packet's declared source length and the actual data length, causing hex2bin to write beyond the allocated heap buffer.

CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Enterprise Linux Enterprise Linux Hardened Images and 2 more

CVE-2026-93011

Dnsmasq: dnsmasq: heap out-of-bounds write in dnssec validator via to_wire/from_wire transforms

A flaw was found in dnsmasq. After a reduction of internal domain-name buffer sizes, the DNSSEC validator can write a few bytes past a name buffer when converting names to and from DNS wire format. An attacker who can cause the server to validate a crafted DNSSEC response may overwrite a small amount of adjacent heap metadata. DNSSEC support is not compiled in by default and must also be enabled at runtime.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed

Vendors

Dnsmasq Red Hat Redhat

Products

Dnsmasq Enterprise Linux Ceph Storage and 6 more

CVE-2026-93007

Dnsmasq: dnsmasq: tcp/53 child-slot exhaustion starves dnssec validation

A flaw was found in dnsmasq. The TCP DNS service uses a small fixed pool of child processes and does not set a receive timeout on client connections. A remote attacker can open idle TCP connections to port 53 and occupy the entire pool, preventing new TCP DNS connections and DNSSEC validation that requires TCP fallback. UDP DNS resolution continues, and occupied slots are released after a fixed lifetime.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed

Vendors

Dnsmasq Red Hat Redhat

Products

Dnsmasq Enterprise Linux Ceph Storage and 6 more

CVE-2026-93006

Dnsmasq: dnsmasq: tftp prefetch cache keyed on stale heap pointer serves wrong file content

A flaw was found in dnsmasq. The TFTP server can serve the wrong file contents because a recently used transfer cache is not invalidated when a transfer finishes. An attacker on the local network who can request a TFTP file may cause a later client to receive previously cached data instead of the requested file. In PXE network-boot environments this can substitute attacker-chosen boot content for a victim machine.

CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed

Vendors

Dnsmasq Red Hat Redhat

Products

Dnsmasq Enterprise Linux Ceph Storage and 6 more

CVE-2026-84185

Jwcrypto: jwcrypto: general json jws kid binding bypass during jwkset verification

A flaw was found in the jwcrypto library, which is used for implementing Javascript Object Signing and Encryption (JOSE) standards. The issue occurs when the library verifies a General JSON Serialization JWS using a set of keys. Due to a coding error, the library fails to correctly identify the specific key ID (kid) and may instead accept a signature made by any valid key in the set. This can allow an attacker with a valid key to bypass authorization checks in applications that rely on the key ID to identify specific tenants or users.

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Red Hat Openshift Ai (rhoai) Ansible Automation Platform Enterprise Linux and 4 more

CVE-2026-111079

Goose: goose: shell history and environment leak via terminal integration

A flaw was found in Goose. When the terminal integration feature is enabled, the application captures shell command history and sends it verbatim without sanitization to configured Large Language Model (LLM) provider endpoints during queries. If a user enters sensitive data—such as API tokens, passwords, or environment variables containing secrets—in the terminal, this unredacted information is transmitted across trust boundaries. This can lead to sensitive information disclosure, exposing confidential credentials to external service providers and logs.

CVSS 3.1 · 7.4 High EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Enterprise Linux Enterprise Linux

CVE-2026-18651

389-ds-base: 389-ds-base: sasl plain bind installs connection credentials before account-lock check, allowing continued access as a locked account

A flaw was found in 389 Directory Server. During SASL PLAIN authentication, the server installs connection-level bind credentials before performing the account-lock check. If the account is subsequently found to be locked, the bind is reported as failed to the client, but the already-installed authenticated state on the connection is not reverted. A client that supplies valid credentials for an account that has been administratively locked can continue to use the same connection with that account's privileges, defeating account lock as an access-revocation control.

CVSS 3.1 · 5.4 Medium EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Enterprise Linux 389 Directory Server Directory Server and 3 more

CVE-2026-121996

Gdb: gdbserver: heap disclosure and wild pointer in gdb_parse_agent_expr via untrusted agent-expression length

A length validation flaw in gdbserver's agent-expression parser allows an unauthenticated remote attacker to read uninitialized heap memory from the gdbserver process and cause a denial of service. Disclosed heap content includes addresses suitable for defeating ASLR in further exploitation.

CVSS 3.1 · 8.2 High EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Enterprise Linux Enterprise Linux Hardened Images and 2 more

CVE-2026-119842

Gst-plugins-base: gst-plugins-base: null-pointer dereference in mdvdsub subtitle parser via missing closing-brace check

A flaw was found in GStreamer's gst-plugins-base MicroDVD subtitle parser. When processing a specially crafted subtitle file, the parser may dereference a NULL pointer, causing the application to crash when a user opens or plays media with a malformed MicroDVD (.sub) subtitle file.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Enterprise Linux Enterprise Linux Rhel Els

CVE-2026-119729

Gst-plugins-base: gst-plugins-bad: gst-plugins-base/gst-plugins-bad: integer overflow in av1 leb128 parser allows denial of service

A flaw was found in GStreamer. An integer overflow vulnerability in the AV1 LEB128 variable-length integer parser allows a remote attacker to cause a crash in applications that process AV1 media content. By crafting a malformed AV1 bitstream containing an invalid LEB128-encoded value, an attacker can cause integer overflow in the parser, resulting in incorrect length values being used during stream processing, which can lead to a denial of service.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Enterprise Linux Enterprise Linux Rhel Els

CVE-2026-119728

Gst-plugins-bad: gst-plugins-bad: null pointer dereference in h.264 mvc sps cleanup during parse failure

A flaw was found in the H.264 video parser in gst-plugins-bad. When processing a specially crafted H.264 video file or network stream with malformed Multiview (MVC) Sequence Parameter Set data, the parser can dereference a NULL pointer during the cleanup of partially allocated internal structures after a parse failure. This can cause the application using GStreamer to crash, resulting in a denial of service.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Enterprise Linux Enterprise Linux Rhel Els

CVE-2026-119727

Gst-plugins-bad: gst-plugins-bad: h.265 sps scc palette predictor array overflow via integer underflow in bounds computation

A flaw was found in GStreamer's gst-plugins-bad H.265 video parser. When parsing a specially crafted H.265 bitstream containing a Screen Content Coding (SCC) extension with certain palette predictor initializer settings, an integer underflow in the upper-bound computation allows the parser to accept an out-of-range value for the number of palette predictor entries. This causes the parser to write beyond the end of a fixed-size array, resulting in memory corruption and an application crash. An attacker can deliver the malformed bitstream as a local file or over a network stream such as HTTP, HLS, DASH, RTSP, RTP, or WebRTC. Successful exploitation requires the application to open or play that content, and is limited to a denial-of-service impact.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Enterprise Linux Enterprise Linux Rhel Els

CVE-2026-115221

Ipa: freeipa: freeipa uses subject cn as proof of certificate ownership

A flaw was found in FreeIPA. An improper authorization check allows an authenticated host to retrieve and revoke digital certificates assigned to other users or services. This issue occurs because FreeIPA verifies ownership solely by matching the host name to the certificate's subject Common Name (CN), without confirming actual ownership in the directory service. Consequently, an enrolled host can disrupt services by revoking certificates belonging to other entities.

CVSS 3.1 · 5.4 Medium EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Enterprise Linux Enterprise Linux Rhel Els

CVE-2026-114038

Device-mapper-multipath: device-mapper-multipath: information disclosure via malformed format string

A flaw was found in device-mapper-multipath. A local user can trigger an out-of-bounds read by sending a command with a format string ending in a trailing percent character to the multipath daemon. This issue can allow the user to expose unintended daemon memory, leading to information disclosure, or cause the daemon to crash, resulting in a Denial of Service (DoS).

CVSS 3.1 · 5.1 Medium EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Enterprise Linux Enterprise Linux Openshift and 2 more

CVE-2026-118593

Kernel: local_bh imbalance in seg6_input_core() drop path (incomplete fix for cve-2026-46099)

A flaw was found in Red Hat Enterprise Linux 9 kernel builds. An incomplete backport of the CVE-2026-46099 fix in RHEL 9.6 through 9.10 left a local_bh imbalance in seg6_input_core(), where the drop path returns with bottom halves still disabled. This can lead to softirq starvation and denial of service on systems with SRv6 tunnels configured. Upstream and RHEL 10 are not affected.

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Enterprise Linux Enterprise Linux Openshift and 2 more