CVE-2026-12610

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.

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Produits concernés

• Red Hat Enterprise Linux 10
• Red Hat Enterprise Linux 6
• Red Hat Enterprise Linux 7
• Red Hat Enterprise Linux 8
• Red Hat Enterprise Linux 9
• Red Hat Hardened Images
• Red Hat OpenShift Container Platform 4
• Fedoraproject sssd
• Redhat enterprise linux

Scores CVSS

Faiblesses (CWE)

• CWE-825

Références

• https://access.redhat.com/security/cve/CVE-2026-12610 MitigationVendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2490288 Vendor Advisory
• https://github.com/SSSD/sssd/issues/8796 Issue TrackingMitigation

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories