{"id":"CVE-2026-80878","title":"kernel: afs: Fix leak of ungot volume (CVE-2026-80878)","summary":"A flaw was found in the Linux kernel's AFS (Andrew File System) implementation. This issue occurs when `afs_lookup_volume_rcu()` fails to acquire a volume, leading to a resource leak. A local attacker could potentially exploit this flaw to…","severity":"high","cvss":7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"vendor","cwe":"CWE-911","vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","affected":["enterprise_linux 10","enterprise_linux 9","openshift_container_platform 4"],"published":"2026-09-04","updated":"2026-10-06","sourceUpdated":"2026-10-06T18:07:26+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80878.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80878.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-80878"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2528730"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80878"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80878"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80878.mbox"},{"url":"https://git.kernel.org/stable/c/7d10cfec6cbce7396ed5cf6abd8c34bae09c393b"},{"url":"https://git.kernel.org/stable/c/78e8ee25a5e8f2eb85bbabbeb15c8a2445b4a67f"},{"url":"https://git.kernel.org/stable/c/9cabf1c86948793fbad09023bd2ec58c71b9c1d4"},{"url":"https://git.kernel.org/stable/c/d672c276f685a540ed2b2a8bafaed4650a89022c"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00156,"epssPercentile":0.04724,"ingestedAt":"2026-09-14T15:23:07.456Z","slug":"CVE-2026-80878","body":"## Overview\n\nA flaw was found in the Linux kernel's AFS (Andrew File System) implementation. This issue occurs when `afs_lookup_volume_rcu()` fails to acquire a volume, leading to a resource leak. A local attacker could potentially exploit this flaw to cause a denial of service due to resource exhaustion.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-06 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80878.json)\n\n**kernel: afs: Fix leak of ungot volume** — rated Important by Red Hat. Released 2026-09-04, updated 2026-10-06.\n\nAffected:\n\n- Red Hat Enterprise Linux 10\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 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- Red Hat Enterprise Linux 8\n- Red Hat OpenShift Container Platform 4\n\n## Remediation\n\nAffected","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":38.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":217238,"id":"CVE-2026-80878","ts":1791360806578,"field":"cvss","old":null,"new":"7"},{"seq":217237,"id":"CVE-2026-80878","ts":1791360806578,"field":"severity","old":"none","new":"high"}]}