CVE-2026-104044: NULL Pointer Dereference in Red Hat Red Hat Enterprise Linux 10
Description
CVE-2026-104044 is a vulnerability in the sssd component of Red Hat Enterprise Linux 10. A local attacker can cause a denial of service by triggering a NULL pointer dereference through a specially crafted PAM request when passkey authentication is enabled. This flaw causes the PAM responder to crash, disrupting authentication services on the affected host.
CVSS v3.1
Score 6.2medium
Affected software
Red Hat
Red Hat Enterprise Linux 10
Red Hat
Red Hat Enterprise Linux 6
Red Hat
Red Hat Enterprise Linux 7
Red Hat
Red Hat Enterprise Linux 8
Red Hat
Red Hat Enterprise Linux 9
Red Hat
Red Hat OpenShift Container Platform 4
Red Hat
Red Hat OpenShift Container Platform 4
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability arises from a missing state validation check in the passkey Kerberos handling within sssd on Red Hat Enterprise Linux 10. When passkey authentication is enabled, a local attacker can send a crafted PAM request that causes the PAM responder to dereference an uninitialized pointer, leading to a crash and denial of service condition affecting authentication services.
Potential Impact
The impact is a denial of service (DoS) on the host by crashing the PAM responder, which disrupts authentication services. There is no confidentiality or integrity impact reported. Exploitation requires local access and no privileges are required to trigger the flaw.
Mitigation Recommendations
Patch status is not yet confirmed — check the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-104044 for current remediation guidance. Until a patch is applied, avoid enabling passkey authentication or restrict local access to trusted users to mitigate risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-10-01T17:25:12.273Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-104044","vendor":"Red Hat"}]
Threat ID: 6ac450002cdf04f6566c70dc
Added to database: 10/06/2026, 01:33:52 UTC
Last enriched: 10/06/2026, 01:48:19 UTC
Last updated: 10/06/2026, 01:48:19 UTC
Views: 5
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