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CVE-2026-104034 Details

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).

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:4.7 MEDIUMVector:CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://access.redhat.com/security/cve/CVE-2026-104034	[email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2479178	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-825	Expired Pointer Dereference	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

1 change record found show changes