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CVE-2026-104039 Details

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.

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-2026-104039	[email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2478956	[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