Red Hat Linux Security Advisories & CVEs
6248 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-2024-31884] Improper use of Pybind
Improper use of Pybind. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-295. Affected package(s): ceph, rhceph/rhceph. Resolved in Red Hat advisory RHSA-2026:2711 — 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 1.
Medium [CVE-2026-21941] Optimizer unspecified vulnerability (CPU Jan 2026)
Optimizer unspecified vulnerability (CPU Jan 2026). Red Hat rates this moderate (CVSS 4.9). Affected package(s): mysql8.4, mysql:8.0, mysql, mysql:8.4. Resolved in Red Hat advisory RHSA-2026:5580 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9.
Medium [CVE-2026-21936] InnoDB unspecified vulnerability (CPU Jan 2026)
InnoDB unspecified vulnerability (CPU Jan 2026). Red Hat rates this moderate (CVSS 4.9). Affected package(s): mysql8.4, mysql:8.0, mysql, mysql:8.4. Resolved in Red Hat advisory RHSA-2026:5580 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9.
Medium [CVE-2026-21968] Optimizer unspecified vulnerability (CPU Jan 2026)
Optimizer unspecified vulnerability (CPU Jan 2026). Red Hat rates this moderate (CVSS 6.5). Affected package(s): mariadb:10.11, mysql8.4, mariadb10.11, mysql:8.0, mysql, mysql:8.4. Resolved in Red Hat advisory RHSA-2026:0334 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9.
Medium [CVE-2026-21937] DDL unspecified vulnerability (CPU Jan 2026)
DDL unspecified vulnerability (CPU Jan 2026). Red Hat rates this moderate (CVSS 4.9). Affected package(s): mysql8.4, mysql:8.0, mysql, mysql:8.4. Resolved in Red Hat advisory RHSA-2026:5580 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9.
Medium [CVE-2026-21964] Thread Pooling unspecified vulnerability (CPU Jan 2026)
Thread Pooling unspecified vulnerability (CPU Jan 2026). Red Hat rates this moderate (CVSS 4.9). Affected package(s): mysql8.4, mysql:8.0, mysql, mysql:8.4. Resolved in Red Hat advisory RHSA-2026:5580 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9.
Medium [CVE-2026-23732] Denial of Service via FastGlyph parsing buffer overflow
Denial of Service via FastGlyph parsing buffer overflow. Red Hat rates this moderate (CVSS 6.5). 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.
Medium [CVE-2026-1145] quickjs-ng quickjs: Heap-based buffer overflow leading to information disclosure or denial of service
quickjs-ng quickjs: Heap-based buffer overflow leading to information disclosure or denial of service. Red Hat rates this important (CVSS 6.3). Weakness: CWE-787. 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.
Medium [CVE-2026-1144] Use-after-free vulnerability in Atomics Ops Handler
Use-after-free vulnerability in Atomics Ops Handler. Red Hat rates this important (CVSS 6.3). Weakness: CWE-825. 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.
Medium [CVE-2026-1180] Blind Server-Side Request Forgery (SSRF) in Keycloak OIDC Dynamic Client Registration via jwks_uri
Blind Server-Side Request Forgery (SSRF) in Keycloak OIDC Dynamic Client Registration via jwks_uri. Red Hat rates this moderate (CVSS 5.8). Weakness: CWE-918. 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-2026-22045] 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.
Medium [CVE-2026-22852] FreeRDP heap-buffer-overflow
FreeRDP heap-buffer-overflow. Red Hat rates this moderate (CVSS 5.6). Weakness: CWE-787. 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.
Medium [CVE-2025-14242] Denial of service via integer overflow in ls command parameter parsing
Denial of service via integer overflow in ls command parameter parsing. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-190. Affected package(s): vsftpd. Resolved in Red Hat advisory RHSA-2026:4470 — 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-2025-71117] Linux kernel: Denial of Service via deadlock in block layer sysfs store callbacks
Linux kernel: Denial of Service via deadlock in block layer sysfs store callbacks. Red Hat rates this low (CVSS 4.4). Weakness: CWE-833. Affected package(s): kernel. Resolved in Red Hat advisory RHSA-2026:18134 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1.
Medium [CVE-2026-0716] Libsoup: out-of-bounds read in libsoup websocket frame processing
A flaw was found in libsoup’s WebSocket frame processing when handling incoming messages. If a non-default configuration is used where the maximum incoming payload size is unset, the library may read memory outside the intended bounds. This can cause unintended memory exposure or a crash. Applications using libsoup’s WebSocket support with this configuration may be impacted. This vulnerability is rated Moderate for Red Hat because it requires a non-default configuration where `max_incoming_payload_size` is explicitly set to 0 or unset in libsoup's WebSocket frame processing. In typical Red Hat deployments, this configuration is not enabled by default, limiting the exposure to memory disclosure or application instability. Red Hat severity: Moderate — CVSS 4.8 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L). Weakness: CWE-805. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: libsoup3.
Medium [CVE-2026-0887] Clickjacking issue, information disclosure in the PDF Viewer component
Clickjacking issue, information disclosure in the PDF Viewer component. Red Hat rates this moderate (CVSS 6.1). 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 9; Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8.
Medium [CVE-2026-0886] Incorrect boundary conditions in the Graphics component
Incorrect boundary conditions in the Graphics component. Red Hat rates this moderate (CVSS 6.1). 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 9; Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8.