{"id":"CVE-2026-80805","title":"kernel: xfs: validate attr entry pointer before field access (CVE-2026-80805)","summary":"A flaw was found in the Linux kernel's XFS filesystem. The xfs_attr3_leaf_verify_entry() function fails to validate an attribute entry pointer before accessing its fields. A local attacker could exploit this by crafting a malicious attribu…","severity":"medium","cvss":4.4,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":"CWE-20","vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","affected":["enterprise_linux 10","enterprise_linux 8","enterprise_linux 9","openshift_container_platform 4"],"published":"2026-09-04","updated":"2026-10-25","sourceUpdated":"2026-10-25T23:29:30+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80805.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80805.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-80805"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2528586"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80805"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80805"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80805.mbox"},{"url":"https://kernelcve.org/list/?q=CVE-2026-80805"},{"url":"https://git.kernel.org/stable/c/0f82586741e39926542f621bafa424e237a04fa4"},{"url":"https://git.kernel.org/stable/c/134d82a2b5e3eba3ebf58753a1387b22f26ca1de"},{"url":"https://git.kernel.org/stable/c/03a12253dd2a036545bdb0110a4e0b8dc70f8e7c"},{"url":"https://git.kernel.org/stable/c/e99120b5944a16d0bc27e52b33de78bcdaaabf5c"},{"url":"https://git.kernel.org/stable/c/98a42bb9d60d42898c3494de351a1bf508348cde"},{"url":"https://git.kernel.org/stable/c/184c1a80421a5b5ddcd262e47980ce2e67fee211"},{"url":"https://git.kernel.org/stable/c/9f92e749fc08b7ff3d9da190c4d1b2273745b282"},{"url":"https://git.kernel.org/stable/c/c35da2bac6f7cb9a9be73f188b4fcc324615c327"},{"url":"https://git.kernel.org/stable/c/b7eea80be25f3334f131d52982b3131aba77b97d"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00195,"epssPercentile":0.09131,"ingestedAt":"2026-10-19T10:20:54.959Z","slug":"CVE-2026-80805","body":"## Overview\n\nA flaw was found in the Linux kernel's XFS filesystem. The xfs_attr3_leaf_verify_entry() function fails to validate an attribute entry pointer before accessing its fields. A local attacker could exploit this by crafting a malicious attribute index (nameidx) to cause an out-of-bounds read. This could lead to the disclosure of sensitive information or a denial of service.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-25 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80805.json)\n\n**kernel: xfs: validate attr entry pointer before field access** — rated Moderate by Red Hat. Released 2026-09-04, updated 2026-10-25.\n\nAffected:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n- Red Hat OpenShift Container Platform 4\n\nNo fix planned:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n- Red Hat OpenShift Container Platform 4\n\nNot affected:\n\n- Red Hat Enterprise Linux 6\n- Red Hat Enterprise Linux 7\n\n## Remediation\n\nFix deferred","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":24.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":229455,"id":"CVE-2026-80805","ts":1793019782757,"field":"cvss","old":null,"new":"4.4"},{"seq":229454,"id":"CVE-2026-80805","ts":1793019782757,"field":"severity","old":"none","new":"medium"}]}