MEDIUM 4.7 NVD
CVE-2026-104034
A flaw was found in SSSD. A use-after-free vulnerability exists in the Kerberos Credential Manager (KCM) responder during Kerberos ticket-granting ticket (TGT)
A flaw was found in SSSD. A use-after-free vulnerability exists in the Kerberos Credential Manager (KCM) responder during Kerberos ticket-granting ticket (TGT) renewal, where a deferred callback accesses memory that has already been released. An authenticated local user with a renewable Kerberos ticket can trigger this issue on systems configured with KCM renewal, causing the KCM responder service to crash and resulting in a Denial of Service (DoS).
References
- https://access.redhat.com/security/cve/CVE-2026-104034
- https://bugzilla.redhat.com/show_bug.cgi?id=2479178
This medium severity vulnerability with a CVSS score of 4.7 was published on 2026-10-06 via NVD.
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