Red Hat Linux Security Advisories & CVEs
3067 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-2026-39858] 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 37 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 5 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 12 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 12 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 11 more.
High [CVE-2026-42009] Denial of Service via DTLS packet reordering vulnerability
Denial of Service via DTLS packet reordering vulnerability. Red Hat rates this important (CVSS 7.5). Weakness: CWE-475. 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-2026:29794 — 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 40 more.
High [CVE-2026-42010] Authentication Bypass via NUL Character in Username
Authentication Bypass via NUL Character in Username. Red Hat rates this important (CVSS 7.1). Weakness: CWE-170. 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 38 more.
High [CVE-2026-5260] Information disclosure via heap overread in RSA key exchange
Information disclosure via heap overread in RSA key exchange. Red Hat rates this moderate (CVSS 8.2). Weakness: CWE-126. 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 10 more.
High [CVE-2026-7324] Memory safety bugs fixed in Firefox 150.0.1
Memory safety bugs fixed in Firefox 150.0.1. Red Hat rates this important (CVSS 7.5). 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-2026-7323] Memory safety bugs fixed in Firefox ESR 140.10.1 and Firefox 150.0.1
Memory safety bugs fixed in Firefox ESR 140.10.1 and Firefox 150.0.1. Red Hat rates this important (CVSS 7.5). Affected package(s): firefox, thunderbird. Resolved in Red Hat advisory RHSA-2026:19370 — 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 8 more.
High [CVE-2026-7322] Memory safety bugs fixed in Thunderbird ESR 140.10.1 and Thunderbird 150.0.1
Memory safety bugs fixed in Thunderbird ESR 140.10.1 and Thunderbird 150.0.1. Red Hat rates this important (CVSS 8.8). Weakness: CWE-787. Affected package(s): firefox, thunderbird. Resolved in Red Hat advisory RHSA-2026:19370 — 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 8 more.