Red Hat Linux Security Advisories & Vulnerabilities
16004 advisories tracked · Red Hat Security Data API · direct feeds checked every minute; rate-limited sources checked less often
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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
Medium [CVE-2026-12087] Information Disclosure due to Out-of-Bounds Read
Information Disclosure due to Out-of-Bounds Read. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-125. Affected package(s): perl-socket-main. Resolved in Red Hat advisory RHSA-2026:11342 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-52718] denial of service via av1 tile_list_obu parser byte/bit confusion
A denial of service vulnerability was found in GStreamer's AV1 codec parser in gst-plugins-bad. The gst_av1_parser_parse_tile_list_obu() function passes a byte count to a bit-reader API that expects a bit count, causing parser desynchronization. A remote attacker could trick a user into opening a specially crafted AV1 media file, triggering an assertion abort and causing the application to crash. The flaw allows a deterministic application crash when processing specially crafted AV1 media files due to a byte/bit unit confusion in gst_av1_parser_parse_tile_list_obu(). The impact is limited to availability since the assertion abort terminates the process immediately with no path to code execution or information disclosure. Red Hat products utilizing GStreamer for multimedia processing are affected if they handle untrusted AV1 media content. Red Hat severity: Moderate — CVSS 6.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H). Weakness: CWE-617. 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 9.2 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; Red Hat Enterprise Linux 6. Red Hat lists Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8 as not affected.
Medium [CVE-2026-52721] Gstreamer1-plugins-bad-free: gstreamer: multiple out-of-bounds reads in pcapparse ipv4/tcp header parsing
Multiple out-of-bounds read vulnerabilities were found in GStreamer's pcapparse element. Malformed PCAP records can trigger reads beyond buffer boundaries during IPv4/TCP header parsing. This element is primarily used in debugging pipelines, limiting real-world exposure. A local attacker could trick a user into processing a specially crafted PCAP file, potentially leading to a crash or information disclosure. The impact is limited because the pcapparse element is primarily used in debugging pipelines, not in standard media playback workflows. The upstream maintainer confirmed this can only be triggered in specially crafted GStreamer pipelines built for debugging purposes, making real-world exploitation very unlikely. Red Hat products utilizing GStreamer for multimedia processing are affected only if they use the pcapparse element in custom debugging pipelines. Red Hat severity: Moderate — CVSS 5.3 (CVSS:3.1/AV:L/AC:H/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 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Will not fix / out of support: Red Hat Enterprise Linux 6. Red Hat does not currently list a fixing RHSA for this CVE.
Medium [CVE-2026-44188] Session hijacking and unauthorized data access due to insufficient session expiration
Session hijacking and unauthorized data access due to insufficient session expiration. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-613. Affected package(s): ansible-automation-platform. Resolved in Red Hat advisory RHSA-2026:25928 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Ansible Automation Platform 2.6; Red Hat Ansible Automation Platform 2.7.
Medium [CVE-2026-54411] Plaintext password recovery via timing discrepancy in pam_userdb module
Plaintext password recovery via timing discrepancy in pam_userdb module. Red Hat rates this moderate (CVSS 4.8). Weakness: CWE-208. Affected package(s): pam-main. Resolved in Red Hat advisory RHSA-2026:35016 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-54231] Abrt: unsanitized systemd journal content written to dump directory files enables content injection
A content injection vulnerability was found in the ABRT post-create event handler scripts in libreport. The event script queries the systemd journal for log entries matching the crashed process and writes the results to files in the dump directory without sanitizing embedded control characters. A local user can inject arbitrary content into the journal output by embedding newline characters in syslog messages, controlling the content that root writes to dump directory files. Red Hat is aware of this vulnerability affecting ABRT event handler scripts in libreport. ABRT was deprecated in Red Hat Enterprise Linux 8 and is not available in Red Hat Enterprise Linux 9 or later. Users of RHEL 8 who have ABRT installed are encouraged to disable or remove it. Fedora users are affected on Fedora 43 and Fedora 44 where ABRT is still shipped. Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N). Weakness: CWE-74. 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 8.6 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On; and 5 more.
Critical [CVE-2026-48165] Arbitrary code execution via global system variable manipulation by a high-privileged user
Arbitrary code execution via global system variable manipulation by a high-privileged user. Red Hat rates this important (CVSS 9.1). 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.
Critical [CVE-2026-48163] Arbitrary code execution via improper parameter validation during SST
Arbitrary code execution via improper parameter validation during SST. Red Hat rates this important (CVSS 9.1). 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 8; Red Hat Enterprise Linux 9; Red Hat Hardened Images; Red Hat Enterprise Linux 10.0 Extended Update Support.
Critical [CVE-2026-44172] MariaDB server: SQL injection vulnerability via improper handling of big5 character set with mysql_real_escape_string()
MariaDB server: SQL injection vulnerability via improper handling of big5 character set with mysql_real_escape_string(). Red Hat rates this important (CVSS 9.1). Weakness: CWE-89. Affected package(s): mariadb10.11, galera, mariadb:11.8, mariadb11.8, mariadb:10.11, mariadb-connector-c-main. Resolved in Red Hat advisory RHSA-2026:33093 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Hardened Images; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 10.0 Extended Update Support.
Critical [CVE-2026-44170] Arbitrary shell command execution via improper sanitization in CONNECT engine
Arbitrary shell command execution via improper sanitization in CONNECT engine. Red Hat rates this important (CVSS 9.9). 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 8; Red Hat Enterprise Linux 9; Red Hat Hardened Images; Red Hat Enterprise Linux 10.0 Extended Update Support.
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.
High [CVE-2026-45830] Unauthorized data manipulation due to improper authorization validation
Unauthorized data manipulation due to improper authorization validation. Red Hat rates this important (CVSS 8.1). Weakness: CWE-266. 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-2026-48748] Denial of Service due to memory exhaustion in HTTP/3 codec
Denial of Service due to memory exhaustion in HTTP/3 codec. 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 product named by the advisory: Red Hat Enterprise Linux.
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