CVE-2026-104039
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
36/100
Published: 2026-10-06
Modified: 2026-11-05
First seen: 2026-11-03
Status: active
Attack Surface
Low Complexity
No Interaction
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
Description
A flaw was found in SSSD. A local user can cause a denial of service (DoS) by disrupting system authentication services. When handling Generic Security Services Application Programming Interface (GSSAPI) authentication in the Pluggable Authentication Module (PAM) responder, cached connection state is freed upon completion without clearing the reference pointer. An attacker can exploit this by sending an additional request over the same connection, causing the service to access invalid memory and unexpectedly terminate.
Weakness Classification (1)
Affected Software (6)
| Vendor | Product | Version |
|---|---|---|
| fedoraproject | sssd | 2.12.0 |
| redhat | enterprise_linux | 7.0 |
| redhat | enterprise_linux | 8.0 |
| redhat | enterprise_linux | 9.0 |
| redhat | enterprise_linux | 10.0 |
| redhat | openshift_container_platform | 4.0 |
References & Advisories (2)
Vendor Advisory
Exploit
Issue Tracking
Mitigation