Red Hat Linux Security Advisories & CVEs
3066 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-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).
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.
High [CVE-2026-0532] Arbitrary file disclosure via specially crafted connector configuration
Arbitrary file disclosure via specially crafted connector configuration. Red Hat rates this important (CVSS 8.6). Weakness: CWE-918. 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 OpenShift distributed tracing 3.
High [CVE-2025-71116] make decode_pool() more resilient against corrupted osdmaps
make decode_pool() more resilient against corrupted osdmaps. Red Hat rates this moderate (CVSS 7.1). Weakness: CWE-125. Affected package(s): kernel, kernel-rt. Resolved in Red Hat advisory RHSA-2026:26462 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.
High [CVE-2026-0891] Memory safety bugs fixed in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147
Memory safety bugs fixed in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. Red Hat rates this important (CVSS 7.5). Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:1413 — 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 10 more.
High [CVE-2026-0882] Use-after-free in the IPC component
Use-after-free in the IPC component. Red Hat rates this important (CVSS 7.5). Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:1413 — 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 10 more.
High [CVE-2026-0881] Sandbox escape in the Messaging System component
Sandbox escape in the Messaging System component. Red Hat rates this important (CVSS 7.5). 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-2026-0879] Sandbox escape due to incorrect boundary conditions in the Graphics component
Sandbox escape due to incorrect boundary conditions in the Graphics component. Red Hat rates this important (CVSS 7.5). Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:1413 — 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 10 more.
High [CVE-2026-0880] Sandbox escape due to integer overflow in the Graphics component
Sandbox escape due to integer overflow in the Graphics component. Red Hat rates this important (CVSS 7.5). Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:1413 — 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 10 more.
High [CVE-2026-0878] Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component
Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. Red Hat rates this important (CVSS 7.5). Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:1413 — 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 10 more.
High [CVE-2026-0877] Mitigation bypass in the DOM: Security component
Mitigation bypass in the DOM: Security component. Red Hat rates this important (CVSS 7.5). Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:1413 — 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 10 more.