CVEvulnerability
CVE-2026-12610
6.4 MEDIUM
Official page ↗
- Status
- Undergoing Analysis
- Published
- 2026-06-30
- Last modified
- 2026-08-31
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.4 MEDIUM — CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-825
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.
Affected configurations
• fedoraproject sssd
• redhat enterprise linux 8.0
• redhat enterprise linux 9.0
• redhat enterprise linux 10.0
Related
Weakness · CWE (1)
- CWE-825 Expired Pointer Dereference weakness
References
- https://access.redhat.com/security/cve/CVE-2026-12610 Mitigation, Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2490288 Vendor Advisory
- https://github.com/SSSD/sssd/issues/8796 Issue Tracking, Mitigation