CVE-2026-12610

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.

CVSS v3 6.4 MEDIUM

6.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.5 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
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

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:fedoraproject:sssd:-:::::::*
	cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:9.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:10.0:::::::*

History

No history.

Information

Published : 2026-06-30 10:16

Updated : 2026-08-31 19:16

NVD link : CVE-2026-12610

Mitre link : CVE-2026-12610

CVE.ORG link : CVE-2026-12610

JSON object : View

Products Affected

redhat

enterprise_linux

fedoraproject

sssd

CWE

CWE-825

Expired Pointer Dereference

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