Red Hat Linux Security Advisories & CVEs
5197 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-2026-41674] Arbitrary XML markup injection
Arbitrary XML markup injection. Red Hat rates this important (CVSS 7.5). Weakness: CWE-91. Affected package(s): rhdh/rhdh-hub-rhel9:1779841586, rhdh/rhdh-hub-rhel9:1781187342, openshift4/ose-agent-installer-ui-rhel9:1779864090, openshift4/ose-agent-installer-ui-rhel9:1779252093. Resolved in Red Hat advisory RHSA-2026:21703 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Developer Hub 1.8; Red Hat Developer Hub 1.9; Red Hat OpenShift Container Platform 4.20; Red Hat OpenShift Container Platform 4.21; and 2 more.
High [CVE-2026-41673] @xmldom/xmldom: xmldom: xmldom: Denial of Service via deeply nested XML documents
@xmldom/xmldom: xmldom: xmldom: Denial of Service via deeply nested XML documents. Red Hat rates this important (CVSS 7.5). Weakness: CWE-776. Affected package(s): rhdh/rhdh-hub-rhel9:1781187342. Resolved in Red Hat advisory RHSA-2026:26234 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Developer Hub 1.9; Red Hat Build of Podman Desktop; Red Hat Fuse 7; Red Hat OpenShift AI (RHOAI).
High [CVE-2026-41672] @xmldom/xmldom: xmldom: Arbitrary XML Node Injection
@xmldom/xmldom: xmldom: Arbitrary XML Node Injection. Red Hat rates this important (CVSS 7.5). Weakness: CWE-91. Affected package(s): rhdh/rhdh-hub-rhel9:1781187342. Resolved in Red Hat advisory RHSA-2026:26234 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Developer Hub 1.9; Red Hat Build of Podman Desktop; Red Hat Fuse 7; Red Hat OpenShift AI (RHOAI); and 1 more.
High [CVE-2026-13601] Overly Permissive Content Security Policy in Yelp Allows Host File Disclosure from Flatpak Applications
Overly Permissive Content Security Policy in Yelp Allows Host File Disclosure from Flatpak Applications. Red Hat rates this important (CVSS 7.1). Weakness: CWE-693. 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 Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.
High [CVE-2026-43284] "Dirty Frag" ESP XFRM variant is a new universal Local Privilege Escalation (LPE) vulnerability in the Linux kernel
"Dirty Frag" ESP XFRM variant is a new universal Local Privilege Escalation (LPE) vulnerability in the Linux kernel. Red Hat rates this important (CVSS 7.8). Weakness: CWE-123. Affected package(s): rhcos, kernel, kernel-rt, kpatch-patch. Resolved in Red Hat advisory RHSA-2026:26542 — 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-2026-39823] Go html/template: Cross-Site Scripting via improper URL escaping in meta tag content
Go html/template: Cross-Site Scripting via improper URL escaping in meta tag content. Red Hat rates this moderate (CVSS 5.4). Weakness: CWE-79. Affected package(s): golang1. Resolved in Red Hat advisory RHSA-2026:23262 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-39826] Cross-site scripting due to incorrect script tag escaping
Cross-site scripting due to incorrect script tag escaping. Red Hat rates this moderate (CVSS 5.4). Weakness: CWE-1289. Affected package(s): golang1. Resolved in Red Hat advisory RHSA-2026:23262 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-39825] ReverseProxy forwards hidden query parameters, potentially bypassing security controls
ReverseProxy forwards hidden query parameters, potentially bypassing security controls. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-472. Affected package(s): golang1. Resolved in Red Hat advisory RHSA-2026:23262 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-13595] heap use-after-free in libblkid nested partition probing
heap use-after-free in libblkid nested partition probing. Red Hat rates this moderate (CVSS 6.8). Weakness: CWE-416. Affected package(s): util-linux-main. Resolved in Red Hat advisory RHSA-2026:26573 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
High [CVE-2026-33079] Regular Expression Denial of Service (ReDoS) via crafted Markdown input
Regular Expression Denial of Service (ReDoS) via crafted Markdown input. Red Hat rates this important (CVSS 7.5). Weakness: CWE-1333. 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 Migration Toolkit for Applications 8.2.
High [CVE-2026-5081] Apache::Session::Generate::ModUniqueId: Perl: mod_unique_id: Apache HTTP Server: Apache::Session::Generate::ModUniqueId: Session ID predictability allows unauthorized access
Apache::Session::Generate::ModUniqueId: Perl: mod_unique_id: Apache HTTP Server: Apache::Session::Generate::ModUniqueId: Session ID predictability allows unauthorized access. Red Hat rates this important (CVSS 8.2). Weakness: CWE-341. 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-2026-43116] ensure safe access to master conntrack
ensure safe access to master conntrack. Red Hat rates this moderate (CVSS 7). Weakness: CWE-416. 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 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 1.
High [CVE-2026-43110] validate bsscfg indices in IF events
validate bsscfg indices in IF events. Red Hat rates this moderate (CVSS 7.5). Weakness: CWE-1285. 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 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 1.
High [CVE-2026-43112] fix out-of-bounds read in cifs_sanitize_prepath
fix out-of-bounds read in cifs_sanitize_prepath. Red Hat rates this important (CVSS 8.1). Weakness: CWE-125. Affected package(s): kernel. Resolved in Red Hat advisory RHSA-2026:34911 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat OpenShift Container Platform 4.22.
High [CVE-2026-43260] Fix RSS context delete logic
Fix RSS context delete logic. Red Hat rates this moderate (CVSS 7.3). Weakness: CWE-772. 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 9; Red Hat Enterprise Linux 1.
High [CVE-2026-43178] fix possible double mmput() in do_procmap_query()
fix possible double mmput() in do_procmap_query(). Red Hat rates this important (CVSS 7). Weakness: CWE-1341. 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-2026-43198] fix potential race in tcp_v6_syn_recv_sock()
fix potential race in tcp_v6_syn_recv_sock(). Red Hat rates this important (CVSS 7). Weakness: CWE-821. Affected package(s): kernel. Resolved in Red Hat advisory RHSA-2026:34094 — 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 7 more.
High [CVE-2026-43114] don't return non-matching entry on expiry
don't return non-matching entry on expiry. Red Hat rates this important (CVSS 8.1). Weakness: CWE-480. 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 Enterprise Linux 10; Red Hat Enterprise Linux 9; Red Hat OpenShift Container Platform 4.
High [CVE-2026-43077] algif_aead - Fix minimum RX size check for decryption
algif_aead - Fix minimum RX size check for decryption. Red Hat rates this moderate (CVSS 7.1). Weakness: CWE-131. 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 9; Red Hat Enterprise Linux 1.
High [CVE-2026-43190] check remaining length before reading optlen
check remaining length before reading optlen. Red Hat rates this moderate (CVSS 7.5). 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 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 1.