Red Hat Linux Security Advisories & CVEs
5192 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 Linux 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 Linux advisories
High [CVE-2026-41240] Cross-Site Scripting (XSS) via inconsistent tag sanitization
Cross-Site Scripting (XSS) via inconsistent tag sanitization. Red Hat rates this moderate (CVSS 8.1). Weakness: CWE-79. Affected package(s): rhoai/odh-mod-arch-model-registry-rhel9:1780467147, devspaces/openvsx-rhel9:1779528224, cryostat/cryostat-openshift-console-plugin-rhel9:4.2.0, devspaces/code-rhel9:1779814592, rhoai/odh-dashboard-rhel9:1780467029, automation-platform-ui. Resolved in Red Hat advisory RHSA-2026:27872 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9.
High [CVE-2026-34003] X.Org X server: Information exposure and denial of service via out-of-bounds memory access
X.Org X server: Information exposure and denial of service via out-of-bounds memory access. Red Hat rates this important (CVSS 7.8). Weakness: CWE-125. Affected package(s): tigervnc, xorg-x11-server-Xwayland, xorg-x11-server. Resolved in Red Hat advisory RHSA-2026:24341 — 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 8.4 Advanced Mission Critical Update Support; and 11 more.
High [CVE-2026-34001] X.Org X server: Use-after-free vulnerability leads to server crash and potential memory corruption
X.Org X server: Use-after-free vulnerability leads to server crash and potential memory corruption. Red Hat rates this important (CVSS 7.8). Weakness: CWE-825. Affected package(s): tigervnc, xorg-x11-server-Xwayland, xorg-x11-server. Resolved in Red Hat advisory RHSA-2026:24341 — 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 8.4 Advanced Mission Critical Update Support; and 11 more.
High [CVE-2026-33999] X.Org X server: Denial of Service via integer underflow in XKB compatibility map handling
X.Org X server: Denial of Service via integer underflow in XKB compatibility map handling. Red Hat rates this important (CVSS 7.8). Weakness: CWE-191. Affected package(s): tigervnc, xorg-x11-server-Xwayland, xorg-x11-server. Resolved in Red Hat advisory RHSA-2026:24341 — 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 8.4 Advanced Mission Critical Update Support; and 11 more.
High [CVE-2026-41989] Denial of Service and buffer overflow via crafted ECDH ciphertext
Denial of Service and buffer overflow via crafted ECDH ciphertext. Red Hat rates this moderate (CVSS 7.5). Weakness: CWE-131. Affected package(s): libgcrypt-main. Resolved in Red Hat advisory RHSA-2026:8466 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
High [CVE-2026-41196] Luanti (Minetest): Arbitrary code execution and full filesystem access via malicious mod sandbox escape
Luanti (Minetest): Arbitrary code execution and full filesystem access via malicious mod sandbox escape. Red Hat rates this important (CVSS 8.2). Weakness: CWE-749. 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-2026-31532] fix ro->uniq use-after-free in raw_rcv()
fix ro->uniq use-after-free in raw_rcv(). Red Hat rates this moderate (CVSS 7.1). Weakness: CWE-366. Affected package(s): kernel, kernel-rt. Resolved in Red Hat advisory RHSA-2026:25095 — 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; Red Hat Enterprise Linux 7.
Low [CVE-2026-41990] Denial of Service or data integrity issues from missing bounds check during Dilithium signing.
Denial of Service or data integrity issues from missing bounds check during Dilithium signing.. Red Hat rates this low (CVSS 3.3). Weakness: CWE-787. Affected package(s): libgcrypt-main. Resolved in Red Hat advisory RHSA-2026:8466 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Critical [CVE-2026-41176] Unauthorized access to administrative functions through unauthenticated Remote Control endpoint.
Unauthorized access to administrative functions through unauthenticated Remote Control endpoint.. Red Hat rates this important (CVSS 9.8). Weakness: CWE-15. 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-2026-41326] Arbitrary file write inside guest image via CopyFile policy
Arbitrary file write inside guest image via CopyFile policy. Red Hat rates this important (CVSS 8.8). Weakness: CWE-1220. Affected package(s): rhcos. Resolved in Red Hat advisory RHSA-2026:25200 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat OpenShift Container Platform 4.19; Confidential Compute Attestation.
High [CVE-2026-41651] race condition vulnerability leads to arbitrary package installation as root
race condition vulnerability leads to arbitrary package installation as root. Red Hat rates this important (CVSS 8.8). Weakness: CWE-367. Affected package(s): PackageKit. Resolved in Red Hat advisory RHSA-2026:11504 — 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 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; and 9 more.
High [CVE-2026-40542] Authentication bypass due to missing mutual authentication verification
Authentication bypass due to missing mutual authentication verification. Red Hat rates this important (CVSS 7.3). Weakness: CWE-325. 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: OpenShift Developer Tools and Services.
High [CVE-2026-22754] Authorization bypass due to incorrect servlet path matching
Authorization bypass due to incorrect servlet path matching. Red Hat rates this important (CVSS 7.5). Weakness: CWE-551. 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-2026-22747] User impersonation via malformed X.509 certificate Common Name (CN) values
User impersonation via malformed X.509 certificate Common Name (CN) values. Red Hat rates this important (CVSS 8.1). Weakness: CWE-295. 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-2026-31488] Do not skip unrelated mode changes in DSC validation
Do not skip unrelated mode changes in DSC validation. Red Hat rates this important (CVSS 7.8). Weakness: CWE-1288. Affected package(s): kernel, kernel-rt. Resolved in Red Hat advisory RHSA-2026:27354 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.6 Extended Update Support; Red Hat Enterprise Linux 8.8 Telecommunications Update Service; and 2 more.
High [CVE-2026-31508] Avoid releasing netdev before teardown completes
Avoid releasing netdev before teardown completes. Red Hat rates this moderate (CVSS 7). Weakness: CWE-367. Affected package(s): kernel. Resolved in Red Hat advisory RHSA-2026:25217 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9.
High [CVE-2026-31474] fix tx.buf use-after-free in isotp_sendmsg()
fix tx.buf use-after-free in isotp_sendmsg(). Red Hat rates this important (CVSS 7.8). Weakness: CWE-364. Affected package(s): kernel. Resolved in Red Hat advisory RHSA-2026:27288 — 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.
High [CVE-2026-31431] algif_aead - Revert to operating out-of-place
algif_aead - Revert to operating out-of-place. Red Hat rates this important (CVSS 7.8). Weakness: CWE-1288. Affected package(s): kernel, rhcos, kernel-rt, kpatch-patch. Resolved in Red Hat advisory RHSA-2026:13729 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: NVIDIA for RHEL 10; Red Hat OpenShift Container Platform 4.12; Red Hat OpenShift Container Platform 4.13; Red Hat OpenShift Container Platform 4.14; and 63 more.
Medium [CVE-2026-6019] Cross-Site Scripting (XSS) vulnerability in http.cookies module
Cross-Site Scripting (XSS) vulnerability in http.cookies module. Red Hat rates this moderate (CVSS 6.8). Weakness: CWE-79. Affected package(s): python3, python3.14. Resolved in Red Hat advisory RHSA-2026:28247 — 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-2026-31467] Linux kernel: Denial of Service in erofs filesystem
Linux kernel: Denial of Service in erofs filesystem. Red Hat rates this moderate (CVSS 5.5). Weakness: CWE-833. Affected package(s): kernel. Resolved in Red Hat advisory RHSA-2026:25191 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1.