CVE-2026-104034

Published: Oct 6, 2026Modified: Oct 6, 2026

4.7

Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitability: 1.0 / Impact: 3.6

Source: secalert@redhat.com (Secondary)

Description

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).

Related CWEs

CWE-825

Expired Pointer Dereference

The product dereferences a pointer that contains a location for memory that was previously valid, but is no longer valid.

References (2)

https://access.redhat.com/security/cve/CVE-2026-104034

Source: secalert@redhat.com

https://bugzilla.redhat.com/show_bug.cgi?id=2479178

Source: secalert@redhat.com

Timeline

No history available yet.