CVE-2026-12610
MEDIUM
NVD
CVSS Score
6.4
Severity
MEDIUM
Published
Jun 30, 2026
Vendor
unknown
Description
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 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.