{"id":"CVE-2026-12610","title":"Sssd: use-after-free crash in sssd' 'sssd_pam' process","summary":"A flaw was found in sssd. When authenticating with a YubiKey, the SSSD PAM responder can crash due to a use-after-free vulnerability, where a memory pointer is incorrectly handled. A local attacker could exploit this flaw by manipulating…","severity":"medium","cvss":6.4,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","cwe":["CWE-825"],"vendor":"Red Hat","product":"pam","affected":["pam (all versions)","sssd (all versions)","pam (all versions)","sssd","pam (all versions)","sssd","pam (all versions)","sssd (all versions)","pam (all versions)","sssd (all versions)","pam","openshift/ose-rhel-coreos-8 (all versions)","openshift/ose-rhel-coreos-9 (all versions)","openshift/ose-rhel-coreos-9 (all versions)"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-06-30T12:44:22.878844Z"},"published":"2026-06-30","updated":"2026-11-05","sourceUpdated":"2026-11-05T17:02:57.509Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-12610","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-12610"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2490288","label":"RHBZ#2490288"},{"url":"https://github.com/SSSD/sssd/issues/8796"}],"tags":["cve.org"],"epss":0.00121,"epssPercentile":0.01949,"ingestedAt":"2026-11-05T22:38:31.418Z","slug":"CVE-2026-12610","body":"## Overview\n\nA flaw was found in sssd. When authenticating with a YubiKey, the SSSD PAM responder can crash due to a use-after-free vulnerability, where a memory pointer is incorrectly handled. A local attacker could exploit this flaw by manipulating smartcard or YubiKey contents, leading to a denial of service that disrupts authentication. This vulnerability also presents a potential for privilege escalation, although it is difficult to exploit.\n\n## Affected\n\n- `pam (all versions)`\n- `sssd (all versions)`\n- `pam (all versions)`\n- `sssd`\n- `pam (all versions)`\n- `sssd`\n- `pam (all versions)`\n- `sssd (all versions)`\n- `pam (all versions)`\n- `sssd (all versions)`\n- `pam`\n- `openshift/ose-rhel-coreos-8 (all versions)`\n- `openshift/ose-rhel-coreos-9 (all versions)`\n- `openshift/ose-rhel-coreos-9 (all versions)`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n### Workarounds\n\nConfigure the sssd systemd service to automatically restart on failure. This ensures authentication remains available even if an attacker triggers the denial-of-service crash.","depth":"sunlit","depthScore":35,"depthScoreParts":{"impact":35.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}