Out-of-bounds Read Affecting sssd-common-pac-debuginfo package, versions <0:2.9.4-1.amzn2023.0.5


Severity

Recommended
0.0
medium
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.17% (6th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-AMZN2023-SSSDCOMMONPACDEBUGINFO-22398513
  • published10 Nov 2026
  • disclosed14 Sept 2026

Introduced: 14 Sep 2026

CVE-2026-90994  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 sssd-common-pac-debuginfo to version 0:2.9.4-1.amzn2023.0.5 or higher.
This issue was patched in ALAS2023-2026-3416.

NVD Description

Note: Versions mentioned in the description apply only to the upstream sssd-common-pac-debuginfo package and not the sssd-common-pac-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

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 Base Scores

version 3.1