{"id":"CVE-2026-98553","title":"kernel: autofs: fix sbi->pipe file reference leak in autofs_kill_sb() (CVE-2026-98553)","summary":"A flaw was found in the Linux kernel's automount file system (autofs). A local user can trigger this issue by initiating an autofs mount operation that fails during initialization, causing the kernel to fail to release associated pipe file…","severity":"low","cvss":2.3,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L","cvssSource":"vendor","cwe":"CWE-772","vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","affected":["enterprise_linux 10","enterprise_linux 6","enterprise_linux 8","enterprise_linux 9","openshift_container_platform 4"],"published":"2026-10-18","updated":"2026-10-20","sourceUpdated":"2026-10-20T01:30:10+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98553.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98553.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98553"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2555016"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98553"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98553"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98553.mbox"},{"url":"https://git.kernel.org/stable/c/3684e2273ba94553af3c5195a46a50214a1a96e3"},{"url":"https://git.kernel.org/stable/c/0662b1ff9b383d5a233d344e4dc518c27a17f7b8"},{"url":"https://git.kernel.org/stable/c/34fa4c1c6e10507dc60e35a82cc9655666946cfd"},{"url":"https://git.kernel.org/stable/c/a58593b501b7be5ad2bc5181bfa8cd4599be257c"},{"url":"https://git.kernel.org/stable/c/f1c57f5b16bbc3571bd479c290996c4d4e1fb931"},{"url":"https://git.kernel.org/stable/c/4bcb371019097d0e357f097902587401c509bbc9"},{"url":"https://git.kernel.org/stable/c/fc4fd0281ac80b5a3c5a2330f688f0f9d2a420b6"},{"url":"https://git.kernel.org/stable/c/aa5e44b29ffe4eaa08cc2237fd65bc2596bc023e"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00216,"epssPercentile":0.11992,"ingestedAt":"2026-10-18T15:45:12.263Z","slug":"CVE-2026-98553","body":"## Overview\n\nA flaw was found in the Linux kernel's automount file system (autofs). A local user can trigger this issue by initiating an autofs mount operation that fails during initialization, causing the kernel to fail to release associated pipe file references. Repeated exploitation can permanently leak system resources, ultimately leading to a Denial of Service (DoS).\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, … · updated 2026-10-20 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98553.json)\n\n**kernel: autofs: fix sbi->pipe file reference leak in autofs_kill_sb()** — rated Low by Red Hat. Released 2026-10-18, updated 2026-10-20.\n\nAffected:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 6\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 6\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 7\n\n## Remediation\n\nOut of support scope","depth":"sunlit","depthScore":13,"depthScoreParts":{"impact":12.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":225820,"id":"CVE-2026-98553","ts":1792498464299,"field":"cvss","old":null,"new":"2.3"},{"seq":225819,"id":"CVE-2026-98553","ts":1792498464299,"field":"severity","old":"none","new":"low"}]}