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
Android app · Google Play
Monitor Red Hat CVEs from your phone.
Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 34 official vendor sources and 160+ reviewed platform categories.
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.
Official source
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-2026-43038] clear skb2->cb[] in ip6_err_gen_icmpv6_unreach()
clear skb2->cb[] in ip6_err_gen_icmpv6_unreach(). Red Hat rates this important (CVSS 7.3). Weakness: CWE-843. Affected package(s): kernel, kernel-rt. Resolved in Red Hat advisory RHSA-2026:25120 — 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 E4S (v.9.2); Red Hat Enterprise Linux AppStream E4S (v.9.4); and 44 more.
High [CVE-2026-31709] validate the whole DACL before rewriting it in cifsacl
validate the whole DACL before rewriting it in cifsacl. Red Hat rates this important (CVSS 7.8). Weakness: CWE-1288. Affected package(s): kernel, kernel-rt. Resolved in Red Hat advisory RHSA-2026:21745 — 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; Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions; and 1 more.
High [CVE-2026-5403] Heap-based Buffer Overflow in Wireshark
Heap-based Buffer Overflow in Wireshark. Red Hat rates this important (CVSS 7.8). Weakness: CWE-122. 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 10.
High [CVE-2026-5656] Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in Wireshark
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in Wireshark. Red Hat rates this important (CVSS 7.8). Weakness: CWE-22. Affected package(s): wireshark. Resolved in Red Hat advisory RHSA-2026:20600 — update the affected packages (`sudo dnf update`). Affected product named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support.
High [CVE-2026-5405] Heap-based Buffer Overflow in Wireshark
Heap-based Buffer Overflow in Wireshark. Red Hat rates this important (CVSS 7.8). Weakness: CWE-122. Affected package(s): wireshark. Resolved in Red Hat advisory RHSA-2026:20600 — update the affected packages (`sudo dnf update`). Affected product named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support.
High [CVE-2026-40912] Authentication bypass via crafted URL dot-segments in StripPrefixRegex middleware
Authentication bypass via crafted URL dot-segments in StripPrefixRegex middleware. Red Hat rates this important (CVSS 8.6). Weakness: CWE-22. Affected package(s): devspaces/traefik-rhel9:1779786779. Resolved in Red Hat advisory RHSA-2026:21772 — update the affected packages (`sudo dnf update`). Affected product named by the advisory: Red Hat OpenShift Dev Spaces 3.28.
High [CVE-2026-39858] Authentication bypass via unsanitized alias headers
Authentication bypass via unsanitized alias headers. Red Hat rates this important (CVSS 8.2). Weakness: CWE-289. Affected package(s): devspaces/traefik-rhel9:1779786779. Resolved in Red Hat advisory RHSA-2026:21772 — update the affected packages (`sudo dnf update`). Affected product named by the advisory: Red Hat OpenShift Dev Spaces 3.28.
High [CVE-2026-35051] Authentication bypass in ForwardAuth middleware
Authentication bypass in ForwardAuth middleware. Red Hat rates this important (CVSS 8.2). Weakness: CWE-501. Affected package(s): devspaces/traefik-rhel9:1779786779. Resolved in Red Hat advisory RHSA-2026:21772 — update the affected packages (`sudo dnf update`). Affected product named by the advisory: Red Hat OpenShift Dev Spaces 3.28.
High [CVE-2026-33845] Denial of Service via DTLS zero-length fragment
Denial of Service via DTLS zero-length fragment. Red Hat rates this important (CVSS 7.5). Weakness: CWE-191. Affected package(s): rhui5/installer-rhel9:1781525693, libtasn1, gnutls, rhui5/cds-rhel9:1781525684, discovery/discovery-ui-rhel9:1782166952, discovery/discovery-server-rhel9:1782159791. Resolved in Red Hat advisory RHSA-2026:29197 — 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 48 more.
High [CVE-2026-7246] Arbitrary command execution via command injection in click.edit()
Arbitrary command execution via command injection in click.edit(). Red Hat rates this important (CVSS 7.2). Weakness: CWE-78. Affected package(s): python3.12-click, python-click. Resolved in Red Hat advisory RHSA-2026:24761 — 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 10; Red Hat Ansible Automation Platform 2.6 for RHEL 9.
High [CVE-2025-14576] Arbitrary QML/JavaScript code injection via malicious SVG file
Arbitrary QML/JavaScript code injection via malicious SVG file. Red Hat rates this important (CVSS 7.8). Weakness: CWE-94. Affected package(s): qt6-main, qt6-qtdeclarative, qt5-main. Resolved in Red Hat advisory RHSA-2026:20567 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Hardened Images.
High [CVE-2026-5402] Heap-based Buffer Overflow in Wireshark
Heap-based Buffer Overflow in Wireshark. Red Hat rates this important (CVSS 8.8). Weakness: CWE-122. 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-2026-31787] fix double free via VMA splitting
fix double free via VMA splitting. Red Hat rates this moderate (CVSS 7.3). Weakness: CWE-763. Affected package(s): kernel, kernel-rt. 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 9; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 1.
High [CVE-2026-31786] Buffer overflow in drivers/xen/sys-hypervisor.c
Buffer overflow in drivers/xen/sys-hypervisor.c. Red Hat rates this moderate (CVSS 7.1). Weakness: CWE-170. Affected package(s): kernel, kernel-rt. 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 9; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 1.
High [CVE-2026-42198] Client-side Denial of Service via malicious SCRAM-SHA-256 authentication
Client-side Denial of Service via malicious SCRAM-SHA-256 authentication. Red Hat rates this important (CVSS 7.5). Weakness: CWE-770. Affected package(s): postgresql-jdbc, pgjdbc. Resolved in Red Hat advisory RHSA-2026:25030 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat AMQ Broker 7; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 10.0 Extended Update Support; and 9 more.
High [CVE-2026-38993] Arbitrary file write via directory traversal in Buckets component
Arbitrary file write via directory traversal in Buckets component. Red Hat rates this important (CVSS 8.1). 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.
High [CVE-2026-37555] integer overflow in ima_reader_init()
integer overflow in ima_reader_init(). Red Hat rates this important (CVSS 8.2). Weakness: CWE-190. Affected package(s): rhaiis/model-opt-cuda-rhel9:1782352950, rhaiis/vllm-spyre-rhel9:1782352919, libsndfile, rhaiis/vllm-rocm-rhel9:1782353093, rhaiis/vllm-cuda-rhel9:1782352847. Resolved in Red Hat advisory RHSA-2026:25197 — 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 7 more.
High [CVE-2026-42011] Security bypass due to incorrect name constraint handling
Security bypass due to incorrect name constraint handling. Red Hat rates this moderate (CVSS 7.4). Weakness: CWE-295. Affected package(s): rhui5/installer-rhel9:1781525693, libtasn1, gnutls, rhui5/cds-rhel9:1781525684, discovery/discovery-ui-rhel9:1782166952, discovery/discovery-server-rhel9:1782159791. Resolved in Red Hat advisory RHSA-2026:20613 — 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-2026-42012] Certificate validation bypass due to improper handling of URI and SRV SANs
Certificate validation bypass due to improper handling of URI and SRV SANs. Red Hat rates this moderate (CVSS 7.1). Weakness: CWE-295. Affected package(s): rhui5/installer-rhel9:1781525693, libtasn1, gnutls, rhui5/cds-rhel9:1781525684, discovery/discovery-ui-rhel9:1782166952, discovery/discovery-server-rhel9:1782159791. Resolved in Red Hat advisory RHSA-2026:20613 — 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 16 more.
High [CVE-2026-42013] Certificate validation bypass due to oversized Subject Alternative Name
Certificate validation bypass due to oversized Subject Alternative Name. Red Hat rates this moderate (CVSS 8.2). Weakness: CWE-295. Affected package(s): rhui5/installer-rhel9:1781525693, libtasn1, gnutls, rhui5/cds-rhel9:1781525684, discovery/discovery-ui-rhel9:1782166952, discovery/discovery-server-rhel9:1782159791. Resolved in Red Hat advisory RHSA-2026:20613 — 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 19 more.