CVE-2026-12610: Fedoraproject Sssd

Medium severity, CVSS 6.4. EPSS: 0.1% chance of exploitation in the next 30 days.

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.

Affected products

• Fedoraproject Sssd: affected versions not specified
• Red Hat Enterprise Linux: version 8.0 only; version 9.0 only; version 10.0 only

Published 2026-06-30. Last modified 2026-08-31.