Red Hat Linux Security Advisories & CVEs
4894 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-2026-25793] Blocklist evasion via ECDSA Signature Malleability
Blocklist evasion via ECDSA Signature Malleability. Red Hat rates this important (CVSS 8.1). Weakness: CWE-347. 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-2026-25749] Arbitrary code execution via 'helpfile' option processing
Arbitrary code execution via 'helpfile' option processing. Red Hat rates this moderate (CVSS 7.3). Weakness: CWE-120. Affected package(s): rhcos, rhaiis/vllm-rocm-rhel9:1778244531, rhui5/haproxy-rhel9:1776868744, rhui5/installer-rhel9:1776868772, vim, rhui5/cds-rhel9:1776868774. Resolved in Red Hat advisory RHSA-2026:4715 — 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-2026-25580] Information disclosure via Server-Side Request Forgery (SSRF) through malicious URLs in message history.
Information disclosure via Server-Side Request Forgery (SSRF) through malicious URLs in message history.. 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 Enterprise Linux AI (RHEL AI) 3.
High [CVE-2026-25731] Arbitrary Code Execution via malicious custom template file during ebook conversion
Arbitrary Code Execution via malicious custom template file during ebook conversion. Red Hat rates this important (CVSS 7.8). Weakness: CWE-917. 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-2026-25635] Remote Code Execution via path traversal in CHM reader
Remote Code Execution via path traversal in CHM reader. Red Hat rates this important (CVSS 8.6). 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-2026-25636] Arbitrary file corruption via path traversal in EPUB conversion
Arbitrary file corruption via path traversal in EPUB conversion. Red Hat rates this important (CVSS 8.2). 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-2026-25640] Arbitrary code execution and information disclosure via path traversal in web UI
Arbitrary code execution and information disclosure via path traversal in web UI. Red Hat rates this important (CVSS 7.1). Weakness: CWE-22. 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 AI (RHEL AI) 3.
High [CVE-2026-23740] Arbitrary code execution and file overwrite as root via insecure ast_coredumper file handling
Arbitrary code execution and file overwrite as root via insecure ast_coredumper file handling. Red Hat rates this important (CVSS 7.8). Weakness: CWE-379. 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-2025-68121] Incorrect certificate validation during TLS session resumption
Incorrect certificate validation during TLS session resumption. Red Hat rates this moderate (CVSS 7.4). Affected package(s): openshift4/openshift-route-controller-manager-rhel8:1781867531, openshift4/ose-gcp-cloud-controller-manager-rhel9:1781927538, openshift4/ose-csi-livenessprobe-rhel8:1776999947, openshift4/oc-mirror-plugin-rhel8:1781822901, openshift4/ose-csi-external-snapshotter-rhel8:1776999951, openshift4/ose-prometheus-node-exporter-rhel9:1774294099. Resolved in Red Hat advisory RHSA-2026:5968 — 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.
High [CVE-2025-61732] Go cgo: Code smuggling due to comment parsing discrepancy
Go cgo: Code smuggling due to comment parsing discrepancy. Red Hat rates this important (CVSS 7.4). Affected package(s): openshift4/ose-csi-livenessprobe-rhel8:1776999947, openshift4/ose-csi-external-snapshotter-rhel8:1776999951, openshift4/ose-prometheus-node-exporter-rhel9:1774294099, openshift4/ose-azure-file-csi-driver-operator-rhel9:1773363768, openshift4/ose-multus-route-override-cni-rhel8:1777001628, openshift4/ose-tests:1777002345. Resolved in Red Hat advisory RHSA-2026:3469 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux AppStream EUS (v. 10.0); Red Hat Enterprise Linux AppStream (v. 10); Red Hat Enterprise Linux AppStream (v. 8); Red Hat Enterprise Linux AppStream AUS (v. 8.2); and 41 more.
High [CVE-2026-25536] @modelcontextprotocol/sdk: @modelcontextprotocol/sdk cross-client data leak
@modelcontextprotocol/sdk: @modelcontextprotocol/sdk cross-client data leak. Red Hat rates this important (CVSS 7.1). Weakness: CWE-367. Affected package(s): ansible-automation-platform-tech-preview/mcp-server-rhel9:1772196222. Resolved in Red Hat advisory RHSA-2026:3960 — update the affected packages (`sudo dnf update`). Affected product named by the advisory: Red Hat Ansible Automation Platform 2.6.
High [CVE-2026-23074] Linux kernel: Use-after-free in teql queueing discipline can lead to privilege escalation
Linux kernel: Use-after-free in teql queueing discipline can lead to privilege escalation. Red Hat rates this important (CVSS 7). Weakness: CWE-825. Affected package(s): kernel, kernel-rt. Resolved in Red Hat advisory RHSA-2026:3634 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION; 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 6 more.
High [CVE-2026-23066] Linux kernel: Denial of Service via unsafe requeue in rxrpc_recvmsg
Linux kernel: Denial of Service via unsafe requeue in rxrpc_recvmsg. Red Hat rates this moderate (CVSS 7.4). Weakness: CWE-416. Affected package(s): kernel, kernel-rt. Resolved in Red Hat advisory RHSA-2026:9112 — 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-2026-23040] fix typo in frequency notification
fix typo in frequency notification. Red Hat rates this moderate (CVSS 7.6). Weakness: CWE-476. 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; Red Hat Enterprise Linux 9.
High [CVE-2026-23097] Linux kernel: Denial of Service due to a deadlock in hugetlb folio migration
Linux kernel: Denial of Service due to a deadlock in hugetlb folio migration. Red Hat rates this moderate (CVSS 7.3). Weakness: CWE-833. 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 8; Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9.
High [CVE-2026-25223] Validation bypass due to malformed Content-Type header leading to integrity impact
Validation bypass due to malformed Content-Type header leading to integrity impact. Red Hat rates this important (CVSS 7.5). Weakness: CWE-179. Affected package(s): rhoai/odh-dashboard-rhel8:1774282136, rhoai/odh-mod-arch-model-registry-rhel9:1776742141, rhoai/odh-dashboard-rhel9:1776742021, devspaces/dashboard-rhel9:1774476526. Resolved in Red Hat advisory RHSA-2026:10184 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat OpenShift AI 2.16; Red Hat OpenShift AI 2.25; Red Hat OpenShift Dev Spaces 3.27; Red Hat Enterprise Linux AI (RHEL AI) 3; and 1 more.
High [CVE-2025-14550] Denial of Service via crafted request with duplicate headers
Denial of Service via crafted request with duplicate headers. Red Hat rates this moderate (CVSS 7.5). Weakness: CWE-167. Affected package(s): foreman, rubygem-katello, rubygem-fog-kubevirt, discovery/discovery-server-rhel9:1770913597, satellite/iop-advisor-backend-rhel9:1773451075, python-pulp-container. Resolved in Red Hat advisory RHSA-2026:3958 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 8.
High [CVE-2026-1312] SQL injection via crafted column aliases in QuerySet.order_by()
SQL injection via crafted column aliases in QuerySet.order_by(). Red Hat rates this important (CVSS 8.5). Weakness: CWE-89. Affected package(s): foreman, rubygem-katello, rubygem-fog-kubevirt, discovery/discovery-server-rhel9:1770913597, satellite/iop-advisor-backend-rhel9:1773451075, ansible-automation-platform. Resolved in Red Hat advisory RHSA-2026:3958 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Ansible Automation Platform 2.5 for RHEL 8; Red Hat Ansible Automation Platform 2.5 for RHEL 9; Red Hat Ansible Automation Platform 2.6 for RHEL 9; Red Hat Satellite 6.16 for RHEL 8; and 5 more.
High [CVE-2026-1287] SQL Injection via crafted column aliases
SQL Injection via crafted column aliases. Red Hat rates this important (CVSS 8.3). Weakness: CWE-89. Affected package(s): foreman, rubygem-katello, rubygem-fog-kubevirt, discovery/discovery-server-rhel9:1770913597, satellite/iop-advisor-backend-rhel9:1773451075, ansible-automation-platform. Resolved in Red Hat advisory RHSA-2026:3958 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Ansible Automation Platform 2.5 for RHEL 8; Red Hat Ansible Automation Platform 2.5 for RHEL 9; Red Hat Ansible Automation Platform 2.6 for RHEL 9; Red Hat Satellite 6.16 for RHEL 8; and 5 more.
High [CVE-2026-1285] Denial of Service via crafted HTML inputs
Denial of Service via crafted HTML inputs. Red Hat rates this moderate (CVSS 7.5). Weakness: CWE-770. Affected package(s): foreman, rubygem-katello, rubygem-fog-kubevirt, discovery/discovery-server-rhel9:1770913597, satellite/iop-advisor-backend-rhel9:1773451075, python-pulp-container. Resolved in Red Hat advisory RHSA-2026:3958 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 8.