Red Hat Linux Security Advisories & CVEs
3200 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
Medium [CVE-2026-23865] Information disclosure or denial of service via specially crafted font files
Information disclosure or denial of service via specially crafted font files. Red Hat rates this moderate (CVSS 5.3). Affected package(s): java, freetype-main. Resolved in Red Hat advisory RHSA-2026:11822 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 1.
Medium [CVE-2026-3441] Information disclosure via specially crafted XCOFF object file
Information disclosure via specially crafted XCOFF object file. Red Hat rates this moderate (CVSS 6.1). Weakness: CWE-125. Affected package(s): binutils-main. Resolved in Red Hat advisory RHSA-2026:33527 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Hardened Images; Red Hat Enterprise Linux 6.
Medium [CVE-2026-3442] Information disclosure or denial of service via out-of-bounds read in bfd linker
Information disclosure or denial of service via out-of-bounds read in bfd linker. Red Hat rates this moderate (CVSS 6.1). Weakness: CWE-125. Affected package(s): binutils-main. Resolved in Red Hat advisory RHSA-2026:33527 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Hardened Images; Red Hat Enterprise Linux 6.
Medium [CVE-2026-3429] Improper Access Control Leading to MFA Deletion and Account Takeover in Keycloak Account REST API
Improper Access Control Leading to MFA Deletion and Account Takeover in Keycloak Account REST API. Red Hat rates this moderate (CVSS 4.2). Weakness: CWE-284. Affected package(s): rhbk/keycloak-operator-bundle:26.4.11, rhbk/keycloak-rhel9, rhbk/keycloak-rhel9-operator:26.4, rhbk/keycloak-rhel9:26.4. Resolved in Red Hat advisory RHSA-2026:6478 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-28421] Denial of service and information disclosure via crafted swap file
Denial of service and information disclosure via crafted swap file. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-120. Affected package(s): rhcos, rhaiis/vllm-rocm-rhel9:1778244531, rhui5/cds-kubernetes-tp-rhel9:1777459441, rhui5/haproxy-rhel9:1776868744, rhui5/installer-rhel9:1776868772, vim. Resolved in Red Hat advisory RHSA-2026:6915 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 7.
Medium [CVE-2026-28417] Arbitrary code execution via OS command injection in the netrw plugin
Arbitrary code execution via OS command injection in the netrw plugin. Red Hat rates this moderate (CVSS 4.4). Weakness: CWE-78. Affected package(s): rhcos, rhaiis/vllm-rocm-rhel9:1778244531, rhui5/cds-kubernetes-tp-rhel9:1777459441, rhui5/haproxy-rhel9:1776868744, rhui5/installer-rhel9:1776868772, vim. Resolved in Red Hat advisory RHSA-2026:6915 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 7.
Medium [CVE-2026-27141] Denial of Service due to malformed HTTP/2 frames
Denial of Service due to malformed HTTP/2 frames. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-476. Affected package(s): openshift-pipelines/pipelines-operator-bundle:1781686494, openshift-pipelines/pipelines-rhel9-operator:1780645012, golang1. Resolved in Red Hat advisory RHSA-2026:7385 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-27904] Denial of Service via catastrophic backtracking in glob expressions
Denial of Service via catastrophic backtracking in glob expressions. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-1333. Affected package(s): quay/quay-rhel9:1775069491, nodejs:20, nodejs:22, rhoai/odh-workbench-codeserver-datascience-cpu-py312-rhel9:1776336652, devspaces/openvsx-rhel9:1779528224, satellite/iop-advisor-frontend-rhel9:1781181673. Resolved in Red Hat advisory RHSA-2026:13826 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9.
Medium [CVE-2026-27888] Denial of Service via crafted PDF
Denial of Service via crafted PDF. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-1050. Affected package(s): rhoai/odh-llama-stack-core-rhel9:1775144403. Resolved in Red Hat advisory RHSA-2026:10184 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-27951] Denial of Service via endless blocking loop in Stream_EnsureCapacity
Denial of Service via endless blocking loop in Stream_EnsureCapacity. Red Hat rates this moderate (CVSS 5.9). Weakness: CWE-190. Affected package(s): freerdp. Resolved in Red Hat advisory RHSA-2026:19811 — 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 Enterprise Linux 7.
Medium [CVE-2026-26986] Denial of Service via double free vulnerability during disconnect
Denial of Service via double free vulnerability during disconnect. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-825. Affected package(s): freerdp. Resolved in Red Hat advisory RHSA-2026:19142 — 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 Enterprise Linux 7; Red Hat Enterprise Linux 1.
Medium [CVE-2026-25997] Denial of service via heap use-after-free during auto-reconnect
Denial of service via heap use-after-free during auto-reconnect. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-825. Affected package(s): freerdp. Resolved in Red Hat advisory RHSA-2026:16014 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1.
Medium [CVE-2026-25952] Denial of service due to use-after-free vulnerability
Denial of service due to use-after-free vulnerability. Red Hat rates this moderate (CVSS 6.4). Weakness: CWE-825. Affected package(s): freerdp. Resolved in Red Hat advisory RHSA-2026:19142 — 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 Enterprise Linux 7; Red Hat Enterprise Linux 1.
Medium [CVE-2026-3203] Buffer Over-read in Wireshark
Buffer Over-read in Wireshark. Red Hat rates this moderate (CVSS 5.5). Weakness: CWE-126. Affected package(s): wireshark. Resolved in Red Hat advisory RHSA-2026:26182 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1.
Medium [CVE-2026-3201] Improperly Controlled Sequential Memory Allocation in Wireshark
Improperly Controlled Sequential Memory Allocation in Wireshark. Red Hat rates this moderate (CVSS 5.5). Weakness: CWE-1325. Affected package(s): wireshark. Resolved in Red Hat advisory RHSA-2026:26182 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1.
Medium [CVE-2026-3190] Information Disclosure via improper role enforcement in UMA 2.0 Protection API
Information Disclosure via improper role enforcement in UMA 2.0 Protection API. Red Hat rates this moderate (CVSS 4.3). Weakness: CWE-280. Affected package(s): rhbk/keycloak-operator-bundle:26.4.11, rhbk/keycloak-rhel9, rhbk/keycloak-rhel9-operator:26.4, rhbk/keycloak-rhel9:26.4. Resolved in Red Hat advisory RHSA-2026:6478 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-26104] Missing Authorization Check Allows Unprivileged Users to Back Up LUKS Headers via udisks D-Bus API
Missing Authorization Check Allows Unprivileged Users to Back Up LUKS Headers via udisks D-Bus API. Red Hat rates this moderate (CVSS 5.5). Weakness: CWE-862. Affected package(s): udisks2. Resolved in Red Hat advisory RHSA-2026:5831 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1.
Medium [CVE-2026-2788] Incorrect boundary conditions in the Audio/Video: GMP component
Incorrect boundary conditions in the Audio/Video: GMP component. Red Hat rates this moderate (CVSS 6.1). Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:3984 — 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 7; Red Hat Enterprise Linux 1.
Medium [CVE-2026-2789] Use-after-free in the Graphics: ImageLib component
Use-after-free in the Graphics: ImageLib component. Red Hat rates this moderate (CVSS 6.1). Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:3984 — 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 7; Red Hat Enterprise Linux 1.
Medium [CVE-2026-2787] Use-after-free in the DOM: Window and Location component
Use-after-free in the DOM: Window and Location component. Red Hat rates this moderate (CVSS 6.1). Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:3984 — 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 7; Red Hat Enterprise Linux 1.