CVE-2026-90463

Public on 2026-09-14
Modified on 2026-09-15
Description
A flaw was found in the sssd NSS responder. This input validation vulnerability allows a local attacker, by sending specially crafted service lookup requests to the NSS responder's UNIX socket, to cause an out-of-bounds read. This out-of-bounds read may lead to a denial of service (DoS) by crashing the NSS responder process. While unprivileged local clients can typically reach the socket, there is no evidence of privilege escalation or reliable data disclosure.
Severity
Medium severity
Medium
See what this means
CVSS v3 Base Score
4.0
See breakdown

Affected Packages

Platform Package Release Date Advisory Status
Amazon Linux 2 - Core sssd Pending Fix
Amazon Linux 2023 sssd Pending Fix
Amazon Linux 2027 Preview sssd Pending Fix

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 4.0 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L