CVE-2026-104038

Published: Oct 6, 2026Modified: Oct 7, 2026

5.9

Vector

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

Exploitability: 2.2 / Impact: 3.6

Source: secalert@redhat.com (Secondary)

Description

A flaw was found in sssd. A remote attacker can cause a denial of service (DoS) by submitting a certificate that lacks an expected Security Identifier (SID) extension. In deployments configured with SID-based certificate mapping rules, the service fails to verify the presence of the extension before processing it, causing the process to crash during authentication or lookup operations.

Related CWEs

CWE-476

NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

References (3)

https://access.redhat.com/security/cve/CVE-2026-104038

Source: secalert@redhat.com

https://bugzilla.redhat.com/show_bug.cgi?id=2478980

Source: secalert@redhat.com

https://bugzilla.redhat.com/show_bug.cgi?id=2478980

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

No history available yet.