Red Hat Linux Security Advisories & CVEs
4776 advisories tracked · Red Hat Security Data API · direct feeds checked every minute; rate-limited backstops use a safe source cadence
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Security advisories for your Red Hat release
Pick your distribution release to see every advisory issued for it and its severity mix. Fixes ship as errata — keep the system patched. This is the release's advisory history, not a per-package scan.
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Red Hat Security Data API
Red Hat Enterprise Linux errata (RHSA) via the official Red Hat Security Data API — CVE severity, CVSS and affected packages. A credential-free official source.
Latest Red Hat advisories
High [CVE-2026-10649] Denial of Service via integer overflow in remote message decompression
Denial of Service via integer overflow in remote message decompression. Red Hat rates this important (CVSS 8.6). Weakness: CWE-190. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected products named by the advisory: Red Hat Enterprise Linux 6; Red Hat OpenShift Container Platform 4; Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions; and 9 more.
High [CVE-2026-46655] integer overflow in VIOSockSelect leads to heap-based buffer overflow
integer overflow in VIOSockSelect leads to heap-based buffer overflow. Red Hat rates this important (CVSS 7.8). Weakness: CWE-190. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected product named by the advisory: Red Hat Enterprise Linux.
High [CVE-2026-12505] local privilege escalation via forged cifs.spnego key description in cifs.upcall
local privilege escalation via forged cifs.spnego key description in cifs.upcall. Red Hat rates this important (CVSS 7.8). Weakness: CWE-250. Affected package(s): cifs-utils. Resolved in Red Hat advisory RHSA-2026:32990 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; and 1 more.
High [CVE-2026-12205] Crypt::DSA: Crypt::DSA: Private-key recovery via nonce reuse across signatures
Crypt::DSA: Crypt::DSA: Private-key recovery via nonce reuse across signatures. Red Hat rates this important (CVSS 7.1). Weakness: CWE-323. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected product named by the advisory: Red Hat Enterprise Linux.
High [CVE-2026-53704] out-of-bounds read in realmedia demuxer fileinfo metadata parser
A flaw was found in GStreamer's RealMedia demuxer in the gst-plugins-ugly package. When processing a RealMedia file containing a specially crafted FILEINFO metadata section, the demuxer parses variable-name and variable-value pairs using re_skip_pascal_string() without validating that offsets remain within the mapped buffer. Additionally, the element count controlling the parsing loop is read from attacker-controlled data without validation, which can cause an infinite loop. A crafted RealMedia file can cause the application to crash, hang, or potentially read limited adjacent memory contents. This flaw affects gstreamer1-plugins-ugly-free as shipped in Red Hat Enterprise Linux. RealMedia is a legacy container format with limited real-world usage. The upstream maintainer confirmed only out-of-bounds reads are present, which can lead to crashes and possible limited information disclosure. No code execution or memory corruption path has been identified. No upstream fix is available yet as the surrounding rmdemux code requires a broader rewrite. Red Hat severity: Moderate — CVSS 7.1 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H). Weakness: CWE-125. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 9.6 Extended Update Support.
High [CVE-2026-53703] out-of-bounds read in realmedia demuxer audio stream header parser
A vulnerability was found in the GStreamer RealMedia demuxer (gst-plugins-ugly). When processing a RealMedia (.rm) file, the demuxer parses MDPR (media properties) chunks to configure audio streams. For audio stream header versions 4 and 5, the parser reads fields such as codec type, packet size, sample rate, channel count, and extra codec data length from fixed offsets within the chunk without first checking that the chunk contains enough data. If a malicious file provides an MDPR chunk that is too small to contain a complete audio stream header, the parser reads beyond the end of the buffer. This can cause the application to crash. In some cases, bytes read past the buffer boundary may be incorporated into stream metadata, which could result in limited information disclosure. This flaw affects gstreamer1-plugins-ugly-free as shipped in Red Hat Enterprise Linux. RealMedia is a legacy container format with limited real-world usage. No code execution or memory corruption path has been identified. No upstream fix is available yet as the surrounding rmdemux code requires a broader rewrite. Red Hat severity: Moderate — CVSS 7.1 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H). Weakness: CWE-125.
High [CVE-2026-8357] Arbitrary code execution via heap buffer overflow in formula compilation
Arbitrary code execution via heap buffer overflow in formula compilation. Red Hat rates this important (CVSS 7.8). Weakness: CWE-131. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected products named by the advisory: Red Hat Enterprise Linux 8.8 Telecommunications Update Service; Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.6 Extended Update Support; and 6 more.
High [CVE-2026-6040] Heap use-after-free allows arbitrary code execution via malformed ODF number format
Heap use-after-free allows arbitrary code execution via malformed ODF number format. Red Hat rates this important (CVSS 7.3). Weakness: CWE-825. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected products named by the advisory: Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.
High [CVE-2026-9595] Information disclosure and denial of service via improper proxy configuration
Information disclosure and denial of service via improper proxy configuration. Red Hat rates this important (CVSS 7.1). Weakness: CWE-346. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected product named by the advisory: Red Hat Enterprise Linux.
High [CVE-2026-52719] Out-of-bounds read via JPEG segment length validation in VA decoder
Out-of-bounds read via JPEG segment length validation in VA decoder. Red Hat rates this important (CVSS 7.1). Weakness: CWE-125. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected products named by the advisory: Red Hat Enterprise Linux AppStream (v. 10); Red Hat Enterprise Linux AppStream (v. 9); Red Hat Enterprise Linux CodeReady Linux Builder (v. 10); Red Hat Enterprise Linux CodeReady Linux Builder (v. 9); and 6 more.
High [CVE-2026-52720] Heap buffer overflow via crafted VNC server rectangle in librfb
Heap buffer overflow via crafted VNC server rectangle in librfb. Red Hat rates this important (CVSS 8.8). Weakness: CWE-122. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected products named by the advisory: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; and 7 more.
High [CVE-2026-52722] Signed integer overflow in VMnc decoder cursor payload handling
Signed integer overflow in VMnc decoder cursor payload handling. Red Hat rates this important (CVSS 7.1). Weakness: CWE-190. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected products named by the advisory: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; and 7 more.
High [CVE-2026-44990] `sanitize-html`: Stored Cross-Site Scripting via HTML sanitizer bypass
`sanitize-html`: Stored Cross-Site Scripting via HTML sanitizer bypass. Red Hat rates this important (CVSS 8.1). Weakness: CWE-79. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected products named by the advisory: Red Hat Advanced Cluster Management for Kubernetes 2.14; Red Hat Hardened Images; Red Hat OpenShift AI (RHOAI); Red Hat OpenShift Virtualization 4; and 18 more.
High [CVE-2026-12143] Form field override via CRLF injection
Form field override via CRLF injection. Red Hat rates this important (CVSS 7.5). Weakness: CWE-93. Affected package(s): cluster-observability-operator/troubleshooting-panel-console-plugin-rhel9:1782839494, openshift-service-mesh/kiali-ossmc-rhel9:1782201851, openshift-service-mesh/kiali-ossmc-rhel9:1782231869, cluster-observability-operator/distributed-tracing-console-plugin-pf6-rhel9:1782839193, cluster-observability-operator/troubleshooting-panel-console-plugin-pf6-rhel9:1782839996, cluster-observability-operator/distributed-tracing-console-plugin-pf5-rhel9:1782839981. Resolved in Red Hat advisory RHSA-2026:33160 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Advanced Cluster Security for Kubernetes 4.10; Red Hat Advanced Cluster Security for Kubernetes 4.9; Red Hat Developer Hub 1.10; Red Hat Hardened Images; and 56 more.
High [CVE-2026-44173] Privilege bypass allows unauthorized file write via subqueries
Privilege bypass allows unauthorized file write via subqueries. Red Hat rates this important (CVSS 8.1). Weakness: CWE-266. Affected package(s): mariadb10.11, mariadb11, galera, mariadb:11.8, mariadb11.8, mariadb:10.11. Resolved in Red Hat advisory RHSA-2026:33093 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Hardened Images.
High [CVE-2026-44168] Arbitrary Code Execution via improper parameter validation during State Snapshot Transfer
Arbitrary Code Execution via improper parameter validation during State Snapshot Transfer. Red Hat rates this important (CVSS 8). Weakness: CWE-78. Affected package(s): mariadb10.11, mariadb11, galera, mariadb:11.8, mariadb11.8, mariadb:10.11. Resolved in Red Hat advisory RHSA-2026:33093 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Hardened Images.
High [CVE-2026-45833] Arbitrary Code Execution via Code Injection
Arbitrary Code Execution via Code Injection. Red Hat rates this important (CVSS 7.5). Weakness: CWE-94. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected products named by the advisory: Red Hat Enterprise Linux AI (RHEL AI) 3; Red Hat OpenShift AI (RHOAI).
High [CVE-2026-45832] Authorization bypass in V1 collection-level endpoints
Authorization bypass in V1 collection-level endpoints. Red Hat rates this important (CVSS 8.1). Weakness: CWE-551. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected products named by the advisory: Red Hat Enterprise Linux AI (RHEL AI) 3; Red Hat OpenShift AI (RHOAI).
High [CVE-2026-50011] Denial of Service via malicious Redis array header
Denial of Service via malicious Redis array header. Red Hat rates this important (CVSS 7.5). Weakness: CWE-770. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected products named by the advisory: Red Hat build of Apache Camel 4.18.1.P1 for Spring Boot 3.5.16; Red Hat Fuse 7; Red Hat JBoss Enterprise Application Platform Expansion Pack; Red Hat Data Grid 8.6.2; and 5 more.
High [CVE-2026-50010] Improper trust manager handling leads to hostname verification bypass
Improper trust manager handling leads to hostname verification bypass. Red Hat rates this important (CVSS 7.5). Weakness: CWE-347. Affected package(s): netty-handler, offline-knowledge-portal/rhokp-rhel9:1782239370. Resolved in Red Hat advisory RHSA-2026:26586 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Offline Knowledge Portal 1.2.7; OpenShift Serverless; Red Hat AMQ Broker 7; Red Hat AMQ Clients; and 26 more.