Expired Pointer Dereference Affecting libsss_autofs 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
0.13% (3rd percentile)

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  • Snyk IDSNYK-AMZN2023-LIBSSSAUTOFS-22398447
  • published10 Nov 2026
  • disclosed6 Oct 2026

Introduced: 6 Oct 2026

CVE-2026-104039  (opens in a new tab)
CWE-825  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 libsss_autofs 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 libsss_autofs package and not the libsss_autofs 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. 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.

CVSS Base Scores

version 3.1