Red Hat Linux Security Advisories & Vulnerabilities
16067 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
High [CVE-2025-62291] Arbitrary Code Execution and Denial of Service via crafted EAP-MSCHAPv2 message
Arbitrary Code Execution and Denial of Service via crafted EAP-MSCHAPv2 message. Red Hat rates this important (CVSS 8.1). Weakness: CWE-191. 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-2026-23527] HTTP Request Smuggling due to improper case-sensitive parsing of Transfer-Encoding header
HTTP Request Smuggling due to improper case-sensitive parsing of Transfer-Encoding header. Red Hat rates this important (CVSS 8.9). Weakness: CWE-444. 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-2026-22775] Denial of Service due to improper input validation
Denial of Service due to improper input validation. Red Hat rates this important (CVSS 7.5). Weakness: CWE-405. Affected package(s): rhtas/rekor-search-ui-rhel9:1770107452, rhtas/rekor-search-ui-rhel9:1770739056. Resolved in Red Hat advisory RHSA-2026:2926 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Trusted Artifact Signer 1.2; Red Hat Trusted Artifact Signer 1.3; Red Hat Build of Podman Desktop - Tech Preview.
High [CVE-2026-22774] Denial of Service due to excessive resource consumption from untrusted input
Denial of Service due to excessive resource consumption from untrusted input. Red Hat rates this important (CVSS 7.5). Weakness: CWE-405. Affected package(s): rhtas/rekor-search-ui-rhel9:1770107452, rhtas/rekor-search-ui-rhel9:1770739056. Resolved in Red Hat advisory RHSA-2026:2926 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Trusted Artifact Signer 1.2; Red Hat Trusted Artifact Signer 1.3; Red Hat Build of Podman Desktop - Tech Preview.
High [CVE-2026-0897] Denial of Service via crafted HDF5 weight loading file
Denial of Service via crafted HDF5 weight loading file. Red Hat rates this important (CVSS 7.6). Weakness: CWE-770. Affected package(s): rhoai/odh-pipeline-runtime-tensorflow-cuda-py312-rhel9:1772093304, rhoai/odh-pipeline-runtime-tensorflow-rocm-py312-rhel9:1772093283, rhoai/odh-workbench-jupyter-tensorflow-cuda-py312-rhel9:1772093300, rhoai/odh-pipeline-runtime-tensorflow-rocm-py312-rhel9:1771502844, rhoai/odh-workbench-jupyter-tensorflow-rocm-py312-rhel9:1771502884, rhoai/odh-modelmesh-runtime-adapter-rhel9:1772094445. Resolved in Red Hat advisory RHSA-2026:4271 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat OpenShift AI 2.25; Red Hat OpenShift AI 3.3; Red Hat Trusted Artifact Signer 1.3; Red Hat OpenShift AI (RHOAI).
Medium [CVE-2026-22045] Denial of Service via ACME TLS-ALPN fast path resource exhaustion
Denial of Service via ACME TLS-ALPN fast path resource exhaustion. Red Hat rates this moderate (CVSS 5.9). Weakness: CWE-770. Affected package(s): devspaces/traefik-rhel9:1774227265. Resolved in Red Hat advisory RHSA-2026:6192 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-0915] Information disclosure via zero-valued network query
Information disclosure via zero-valued network query. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-908. Affected package(s): insights-proxy/insights-proxy-container-rhel9:1773685509, rhui5/rhua-rhel9:1773670137, glibc, discovery/discovery-server-rhel9:1773273243, discovery/discovery-ui-rhel9:1773273070, glibc-main. Resolved in Red Hat advisory RHSA-2026:3228 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 1.
Medium [CVE-2026-1002] static handler component cache can be manipulated to deny the access to static files
static handler component cache can be manipulated to deny the access to static files. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-444. Affected package(s): rhoai/odh-trustyai-service-rhel9:1776748859, eap7-wildfly, vertx-core, cryostat/jfr-datasource-rhel9:4.2.0, vertx-core-logging, devspaces/server-rhel9:1774228740. Resolved in Red Hat advisory RHSA-2026:25089 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 7.
Medium [CVE-2026-0990] Denial of Service via uncontrolled recursion in XML catalog processing
Denial of Service via uncontrolled recursion in XML catalog processing. Red Hat rates this moderate (CVSS 5.9). Weakness: CWE-674. Affected package(s): libxml2-main. Resolved in Red Hat advisory RHSA-2026:7519 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; and 4 more.
Low [CVE-2026-0976] proxy bypass due to improper handling of matrix parameters in url paths
A flaw was found in Keycloak. This improper input validation vulnerability occurs because Keycloak accepts RFC-compliant matrix parameters in URL path segments, while common reverse proxy configurations may ignore or mishandle them. A remote attacker can craft requests to mask path segments, potentially bypassing proxy-level path filtering. This could expose administrative or sensitive endpoints that operators believe are not externally reachable. This vulnerability is rated Low for Red Hat Keycloak. The flaw arises from Keycloak's acceptance of RFC-compliant matrix parameters in URL paths, which can be mishandled by certain reverse proxy configurations. Exploitation depends on the specific reverse proxy configuration. Red Hat severity: Low — CVSS 3.7 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N). Weakness: CWE-20. Affected Red Hat products: Red Hat Build of Keycloak; Red Hat JBoss Enterprise Application Platform 8; Red Hat JBoss Enterprise Application Platform Expansion Pack. Red Hat does not currently list a fixing RHSA for this CVE.
Low [CVE-2026-0988] Denial of Service via Integer Overflow in g_buffered_input_stream_peek()
Denial of Service via Integer Overflow in g_buffered_input_stream_peek(). Red Hat rates this low (CVSS 3.7). Weakness: CWE-190. Affected package(s): glib2-main. Resolved in Red Hat advisory RHSA-2026:7461 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; and 2 more.
Low [CVE-2026-0989] Unbounded RelaxNG Include Recursion Leading to Stack Overflow
Unbounded RelaxNG Include Recursion Leading to Stack Overflow. Red Hat rates this low (CVSS 3.7). Weakness: CWE-674. Affected package(s): libxml2-main. Resolved in Red Hat advisory RHSA-2026:7519 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; and 4 more.
Low [CVE-2026-0992] Denial of Service via crafted XML catalogs
Denial of Service via crafted XML catalogs. Red Hat rates this low (CVSS 2.9). Weakness: CWE-400. Affected package(s): libxml2-main. Resolved in Red Hat advisory RHSA-2026:7519 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; and 4 more.
Critical [CVE-2025-70968] Arbitrary code execution via Use After Free in PluginTARGA.cpp;loadRLE()
Arbitrary code execution via Use After Free in PluginTARGA.cpp;loadRLE(). Red Hat rates this important (CVSS 9.8). Weakness: CWE-416. 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-2026-0861] Integer overflow in memalign leads to heap corruption
Integer overflow in memalign leads to heap corruption. Red Hat rates this low (CVSS 8.1). Weakness: CWE-190. Affected package(s): glibc-main, costmanagement/costmanagement-metrics-rhel9-operator:1770836349, insights-proxy/insights-proxy-container-rhel9:1773685509, rhui5/rhua-rhel9:1773670137, rhui5/cds-rhel9:1773670073, rhui5/haproxy-rhel9:1773672059. Resolved in Red Hat advisory RHSA-2026:3228 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 1.
High [CVE-2026-22859] FreeRDP heap-buffer-overflow
FreeRDP heap-buffer-overflow. Red Hat rates this important (CVSS 7.4). Weakness: CWE-125. Affected package(s): freerdp. Resolved in Red Hat advisory RHSA-2026:4439 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.2 Advanced Update Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; and 11 more.
High [CVE-2026-22858] FreeRDP global-buffer-overflow
FreeRDP global-buffer-overflow. Red Hat rates this important (CVSS 7.4). Weakness: CWE-787. Affected package(s): freerdp. Resolved in Red Hat advisory RHSA-2026:4439 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.2 Advanced Update Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; and 11 more.
High [CVE-2026-22856] FreeRDP heap-use-after-free
FreeRDP heap-use-after-free. Red Hat rates this moderate (CVSS 8.1). Weakness: CWE-416. Affected package(s): freerdp. Resolved in Red Hat advisory RHSA-2026:6958 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7.
High [CVE-2026-22854] FreeRDP heap-buffer-overflow
FreeRDP heap-buffer-overflow. Red Hat rates this moderate (CVSS 8.1). Weakness: CWE-122. Affected package(s): freerdp. Resolved in Red Hat advisory RHSA-2026:6958 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7.
High [CVE-2026-22853] FreeRDP heap-buffer-overflow
FreeRDP heap-buffer-overflow. Red Hat rates this important (CVSS 8.1). Weakness: CWE-787. Affected package(s): freerdp. Resolved in Red Hat advisory RHSA-2026:19033 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 6.
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