CVE-2026-90994

A flaw was found in sssd, specifically within the PAM (Pluggable Authentication Modules) responder's protocol v1 parser, pam_parse_in_data(). A local client with access to the PAM responder's UNIX socket can exploit this by negotiating protocol v1 and sending an empty or truncated PAM request body. This can trigger an out-of-bounds read, potentially causing the PAM responder to terminate or restart, leading to a local denial of service.

CVSS v3 4.0 MEDIUM

4.0^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.5 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2026-90994
https://bugzilla.redhat.com/show_bug.cgi?id=2479455

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-14 16:17

Updated : 2026-09-14 17:17

NVD link : CVE-2026-90994

Mitre link : CVE-2026-90994

CVE.ORG link : CVE-2026-90994

JSON object : View

Products Affected

No product.

CWE

CWE-125

Out-of-bounds Read

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