Red Hat Linux Security Advisories & CVEs
4891 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-2026-34986] Denial of Service via crafted JSON Web Encryption (JWE) object
Denial of Service via crafted JSON Web Encryption (JWE) object. Red Hat rates this important (CVSS 7.5). Weakness: CWE-131. Affected package(s): odf4/mcg-core-rhel9:1776403991, openshift-service-mesh/pilot-rhel8:1777319850, openshift-service-mesh/istio-cni-rhel8:1777374598, odf4/odf-cloudnative-pg-rhel9-operator:1776406131, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1778867753, multicluster-engine/assisted-installer-agent-rhel9:1776351169. Resolved in Red Hat advisory RHSA-2026:25194 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Cryostat 4 on RHEL 9; Red Hat Enterprise Linux AppStream EUS (v. 10.0); Red Hat Enterprise Linux AppStream (v. 10); Red Hat Enterprise Linux AppStream (v. 8); and 92 more.
High [CVE-2026-34589] Memory corruption leading to arbitrary code execution or denial of service
Memory corruption leading to arbitrary code execution or denial of service. Red Hat rates this important (CVSS 8.8). Weakness: CWE-190. 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-2026-34588] Arbitrary code execution and information disclosure via crafted EXR file
Arbitrary code execution and information disclosure via crafted EXR file. Red Hat rates this important (CVSS 8.8). Weakness: CWE-190. Affected package(s): openexr, rhaiis/model-opt-cuda-rhel9:1782352950, rhaiis/vllm-spyre-rhel9:1782352919, rhaiis/vllm-rocm-rhel9:1782353093, rhaiis/vllm-cuda-rhel9:1782352847. Resolved in Red Hat advisory RHSA-2026:15888 — 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 9.0 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.4 Extended Update Support; and 2 more.
High [CVE-2026-34444] Arbitrary Code Execution due to inconsistent attribute filtering
Arbitrary Code Execution due to inconsistent attribute filtering. Red Hat rates this important (CVSS 8.1). Weakness: CWE-914. Affected package(s): satellite/foreman-mcp-server-rhel9:1780492008. Resolved in Red Hat advisory RHSA-2026:22993 — update the affected packages (`sudo dnf update`). Affected product named by the advisory: Red Hat Satellite 6.18.
High [CVE-2026-34379] Denial of Service due to misaligned memory write during EXR file decoding
Denial of Service due to misaligned memory write during EXR file decoding. Red Hat rates this important (CVSS 7.1). Weakness: CWE-475. 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-2026-34982] arbitrary command execution via modeline sandbox bypass
arbitrary command execution via modeline sandbox bypass. Red Hat rates this important (CVSS 8.2). Weakness: CWE-78. Affected package(s): rhaiis/model-opt-cuda-rhel9:1782352950, rhaiis/vllm-spyre-rhel9:1782352919, vim, rhui5/haproxy-rhel9:1779798164, rhui5/rhua-rhel9:1779798222, rhaiis/vllm-rocm-rhel9:1782353093. Resolved in Red Hat advisory RHSA-2026:28049 — 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 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; and 20 more.
High [CVE-2026-31408] Fix use-after-free in sco_recv_frame() due to missing sock_hold
Fix use-after-free in sco_recv_frame() due to missing sock_hold. Red Hat rates this moderate (CVSS 7). Weakness: CWE-911. Affected package(s): kernel, kernel-rt. Resolved in Red Hat advisory RHSA-2026:19569 — 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.
High [CVE-2026-34780] Context Isolation bypass via VideoFrame object transfer
Context Isolation bypass via VideoFrame object transfer. Red Hat rates this important (CVSS 8). Weakness: CWE-501. 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 Build of Podman Desktop - Tech Preview.
High [CVE-2026-34774] Memory corruption and crash due to use-after-free in offscreen rendering
Memory corruption and crash due to use-after-free in offscreen rendering. Red Hat rates this important (CVSS 8.1). 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 Build of Podman Desktop - Tech Preview.
High [CVE-2026-34771] Memory corruption or application crash via use-after-free in permission request handling
Memory corruption or application crash via use-after-free in permission request handling. Red Hat rates this important (CVSS 7.5). Weakness: CWE-364. 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 Build of Podman Desktop - Tech Preview.
High [CVE-2026-34769] Arbitrary code execution and security bypass via undocumented command-line switches
Arbitrary code execution and security bypass via undocumented command-line switches. Red Hat rates this important (CVSS 7.7). Weakness: CWE-88. 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 Build of Podman Desktop - Tech Preview.
High [CVE-2026-0545] Unauthenticated remote code execution via unprotected job endpoints
Unauthenticated remote code execution via unprotected job endpoints. Red Hat rates this important (CVSS 8.1). Weakness: CWE-306. 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 OpenShift AI (RHOAI); Red Hat OpenShift AI 3.4.
High [CVE-2026-35535] Privilege escalation due to failure in privilege drop calls
Privilege escalation due to failure in privilege drop calls. Red Hat rates this important (CVSS 7.4). Weakness: CWE-272. Affected package(s): rhcos, sudo, rhui5/rhua-rhel9:1779798222, rhaiis/vllm-rocm-rhel9:1782353093, rhui5/installer-rhel9:1779798165. Resolved in Red Hat advisory RHSA-2026:20040 — 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 Extended Lifecycle Support - EXTENSION; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; and 18 more.
High [CVE-2026-23455] check for zero length in DecodeQ931()
check for zero length in DecodeQ931(). 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 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 1.
High [CVE-2026-31402] fix heap overflow in NFSv4.0 LOCK replay cache
fix heap overflow in NFSv4.0 LOCK replay cache. Red Hat rates this important (CVSS 7.8). Weakness: CWE-787. Affected package(s): kernel, kernel-rt. Resolved in Red Hat advisory RHSA-2026:13936 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION); Red Hat Enterprise Linux Server Optional -EXTENSION (v. 6 ELS -EXTENSION); Red Hat Enterprise Linux Server (v. 7 ELS); Red Hat Enterprise Linux for Real Time (v. 7 ELS); and 60 more.
High [CVE-2026-34742] Model Context Protocol (MCP) Go SDK: DNS rebinding vulnerability allows unauthorized access
Model Context Protocol (MCP) Go SDK: DNS rebinding vulnerability allows unauthorized access. Red Hat rates this important (CVSS 8). Weakness: CWE-1188. Affected package(s): devspaces/udi-rhel9:1779829736. Resolved in Red Hat advisory RHSA-2026:21772 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat OpenShift Dev Spaces 3.28; OpenShift Serverless.
High [CVE-2026-34601] XML structure injection via CDATA terminator
XML structure injection via CDATA terminator. Red Hat rates this important (CVSS 7.5). Weakness: CWE-91. 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-2026-34827] Denial of Service via crafted multipart/form-data requests
Denial of Service via crafted multipart/form-data requests. 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: Logging Subsystem for Red Hat OpenShift; Red Hat 3scale API Management Platform 2.
High [CVE-2026-34829] Denial of Service via unbounded multipart file upload
Denial of Service via unbounded multipart file upload. 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: Logging Subsystem for Red Hat OpenShift; Red Hat 3scale API Management Platform 2.
High [CVE-2026-34785] Information disclosure via incorrect static file serving prefix check
Information disclosure via incorrect static file serving prefix check. Red Hat rates this important (CVSS 7.5). Weakness: CWE-552. 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.