{"id":"CVE-2026-109976","title":"A flaw was found in the clevis PKCS#11 pin","summary":"A flaw was found in the clevis PKCS#11 pin. The clevis-pkcs11-afunix-socket-unlock daemon crashes when an AF_UNIX client connects to the data socket without a bound address, due to an integer underflow in the getpeername result handling.…","severity":"medium","cvss":4.7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-787"],"vendor":"Red Hat","product":"clevis","affected":["clevis (all versions)","clevis","clevis","clevis (all versions)","openshift/ose-rhel-coreos-8","openshift/ose-rhel-coreos-9"],"published":"2026-10-13","updated":"2026-10-15","sourceUpdated":"2026-10-15T16:33:26.290","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-109976","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-109976","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550375","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550375","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-109976.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-109976"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109976"}],"tags":["nvd","cve.org","exploit-available","csaf","vex","red-hat"],"epss":0.00143,"epssPercentile":0.03607,"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-14T17:27:03.696951Z"},"ingestedAt":"2026-10-13T13:27:04.020Z","slug":"CVE-2026-109976","body":"## Overview\n\nA flaw was found in the clevis PKCS#11 pin. The clevis-pkcs11-afunix-socket-unlock daemon crashes when an AF_UNIX client connects to the data socket without a bound address, due to an integer underflow in the getpeername result handling. This causes a denial of service, preventing LUKS disk decryption from completing during boot.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · updated 2026-10-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-109976.json)","depth":"twilight","depthScore":38,"depthScoreParts":{"impact":25.9,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":221420,"id":"CVE-2026-109976","ts":1792031224986,"field":"exploit_available","old":"false","new":"true"}]}