Red Hat Linux Security Advisories & Vulnerabilities
16040 advisories tracked · Red Hat Security Data API · direct feeds checked every minute; rate-limited sources checked less often
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Pick your distribution release to see every advisory issued for it and its severity mix. Fixes ship as errata, so keep the system patched. This is the release's advisory history, not a per-package scan.
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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-2025-67030] org.codehaus.plexus:plexus-utils: Plexus-utils: Directory Traversal in extractFile method
org.codehaus.plexus:plexus-utils: Plexus-utils: Directory Traversal in extractFile method. Red Hat rates this important (CVSS 8.3). Weakness: CWE-22. Affected package(s): eap8-jboss-logging, eap8-guava-failureaccess, eap8-activemq-artemis, eap8-netty-transport-native-epoll, eap8-reactivex-rxjava, eap8-wildfly-javadocs. Resolved in Red Hat advisory RHSA-2026:7109 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat JBoss EAP 8.1 for RHEL 8; Red Hat JBoss EAP 8.1 for RHEL 9; Red Hat Enterprise Linux AppStream EUS (v. 10.0); Red Hat Enterprise Linux AppStream (v. 10); and 44 more.
High [CVE-2026-23392] release flowtable after rcu grace period on error
release flowtable after rcu grace period on error. Red Hat rates this moderate (CVSS 7). Weakness: CWE-825. 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 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 1.
Medium [CVE-2026-33809] Denial of Service via maliciously crafted TIFF file
Denial of Service via maliciously crafted TIFF file. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-1285. Affected package(s): golang1. Resolved in Red Hat advisory RHSA-2026:7385 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-34085] Security flaw allows arbitrary code execution or system crash
Security flaw allows arbitrary code execution or system crash. Red Hat rates this moderate (CVSS 6.6). Weakness: CWE-193. Affected package(s): fontconfig-main. Resolved in Red Hat advisory RHSA-2026:13722 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-3591] Unauthorized access due to use-after-return vulnerability in DNS query handling
Unauthorized access due to use-after-return vulnerability in DNS query handling. Red Hat rates this moderate (CVSS 5.4). Weakness: CWE-825. Affected package(s): bind-main. Resolved in Red Hat advisory RHSA-2026:6935 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-3119] Denial of Service via authenticated TKEY queries
Denial of Service via authenticated TKEY queries. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-237. Affected package(s): bind-main. Resolved in Red Hat advisory RHSA-2026:6935 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
High [CVE-2026-4371] Out of bounds read in IMAP parsing
Out of bounds read in IMAP parsing. Red Hat rates this important (CVSS 8.2). Weakness: CWE-130. Affected package(s): thunderbird. Resolved in Red Hat advisory RHSA-2026:8286 — 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 8.2 Advanced 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; and 9 more.
High [CVE-2026-33412] Arbitrary code execution via command injection in glob() function
Arbitrary code execution via command injection in glob() function. Red Hat rates this important (CVSS 7.3). Weakness: CWE-78. Affected package(s): rhcos, rhaiis/vllm-rocm-rhel9:1778244531, rhui5/cds-kubernetes-tp-rhel9:1777459441, rhui5/haproxy-rhel9:1776868744, rhui5/installer-rhel9:1776868772, vim. Resolved in Red Hat advisory RHSA-2026:6915 — 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 8.2 Advanced Update Support; and 23 more.
High [CVE-2026-32647] Denial of Service or Code Execution via specially crafted MP4 files
Denial of Service or Code Execution via specially crafted MP4 files. Red Hat rates this important (CVSS 7.8). Weakness: CWE-125. Affected package(s): nginx-main, nginx, nginx:1.26, nginx:1.24, rhui5/cds-rhel9:1776868774, rhui5/rhua-rhel9:1776868842. Resolved in Red Hat advisory RHSA-2026:6906 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: NGINX Open Source; NGINX Plus; Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 8; and 7 more.
High [CVE-2026-4775] Arbitrary code execution or denial of service via signed integer overflow in TIFF file processing
Arbitrary code execution or denial of service via signed integer overflow in TIFF file processing. Red Hat rates this important (CVSS 7.8). Weakness: CWE-190. Affected package(s): libtiff-main, rhaiis/model-opt-cuda-rhel9:1782352950, rhaiis/vllm-spyre-rhel9:1782352919, compat-libtiff3, libtiff, mingw-libtiff. Resolved in Red Hat advisory RHSA-2026:30349 — 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 14 more.
High [CVE-2026-27651] Denial of Service via undisclosed requests when ngx_mail_auth_http_module is enabled
Denial of Service via undisclosed requests when ngx_mail_auth_http_module is enabled. Red Hat rates this important (CVSS 7.5). Weakness: CWE-476. Affected package(s): nginx-main, nginx, nginx:1.26, nginx:1.24, rhui5/cds-rhel9:1776868774, rhui5/rhua-rhel9:1776868842. Resolved in Red Hat advisory RHSA-2026:6906 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: NGINX Open Source; NGINX Plus; Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 8; and 6 more.
High [CVE-2026-27654] Denial of Service or file modification via buffer overflow in ngx_http_dav_module
Denial of Service or file modification via buffer overflow in ngx_http_dav_module. Red Hat rates this important (CVSS 8.2). Weakness: CWE-120. Affected package(s): nginx-main, nginx, nginx:1.26, nginx:1.24, rhui5/cds-rhel9:1776868774, rhui5/rhua-rhel9:1776868842. Resolved in Red Hat advisory RHSA-2026:6906 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: NGINX Open Source; NGINX Plus; Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 8; and 6 more.
High [CVE-2026-27784] Denial of Service due to memory corruption via crafted MP4 file
Denial of Service due to memory corruption via crafted MP4 file. Red Hat rates this important (CVSS 7.5). Weakness: CWE-190. Affected package(s): nginx-main, nginx, nginx:1.26, nginx:1.24, rhui5/cds-rhel9:1776868774, rhui5/rhua-rhel9:1776868842. Resolved in Red Hat advisory RHSA-2026:6906 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: NGINX Open Source; Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions; and 5 more.
High [CVE-2026-4721] Memory safety bugs fixed in Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird ESR 140.9, Firefox 149 and Thunderbird 149
Memory safety bugs fixed in Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird ESR 140.9, Firefox 149 and Thunderbird 149. Red Hat rates this important (CVSS 7.5). Weakness: CWE-825. Affected package(s): firefox, thunderbird. Resolved in Red Hat advisory RHSA-2026:6917 — 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 8.2 Advanced Update Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; and 10 more.
High [CVE-2026-4729] Memory safety bugs fixed in Firefox 149 and Thunderbird 149
Memory safety bugs fixed in Firefox 149 and Thunderbird 149. Red Hat rates this important (CVSS 7.5). Weakness: CWE-825. 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-2026-4720] Memory safety bugs fixed in Firefox ESR 140.9, Thunderbird ESR 140.9, Firefox 149 and Thunderbird 149
Memory safety bugs fixed in Firefox ESR 140.9, Thunderbird ESR 140.9, Firefox 149 and Thunderbird 149. Red Hat rates this important (CVSS 7.5). Weakness: CWE-120. Affected package(s): firefox, thunderbird. Resolved in Red Hat advisory RHSA-2026:6917 — 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 8.2 Advanced Update Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; and 10 more.
High [CVE-2026-4704] Denial-of-service in the WebRTC: Signaling component
Denial-of-service in the WebRTC: Signaling component. Red Hat rates this moderate (CVSS 7.5). Weakness: CWE-770. Affected package(s): firefox, thunderbird. Resolved in Red Hat advisory RHSA-2026:6917 — 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-2026-4699] Incorrect boundary conditions in the Layout: Text and Fonts component
Incorrect boundary conditions in the Layout: Text and Fonts component. Red Hat rates this important (CVSS 7.5). Weakness: CWE-787. Affected package(s): firefox, thunderbird. Resolved in Red Hat advisory RHSA-2026:6917 — 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 8.2 Advanced Update Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; and 10 more.
High [CVE-2026-4700] Mitigation bypass in the Networking: HTTP component
Mitigation bypass in the Networking: HTTP component. Red Hat rates this important (CVSS 7.5). Weakness: CWE-444. Affected package(s): firefox, thunderbird. Resolved in Red Hat advisory RHSA-2026:6917 — 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 8.2 Advanced Update Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; and 10 more.
High [CVE-2026-4698] JIT miscompilation in the JavaScript Engine: JIT component
JIT miscompilation in the JavaScript Engine: JIT component. Red Hat rates this important (CVSS 7.5). Weakness: CWE-733. Affected package(s): firefox, thunderbird. Resolved in Red Hat advisory RHSA-2026:6917 — 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 8.2 Advanced Update Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; and 10 more.
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