Expired Pointer Dereference Affecting sssd-ad package, versions <0:1.16.5-12.amzn2.15


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.12% (3rd percentile)

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  • Snyk IDSNYK-AMZN2-SSSDAD-18523289
  • published5 Aug 2026
  • disclosed30 Jun 2026

Introduced: 30 Jun 2026

CVE-2026-12610  (opens in a new tab)
CWE-825  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 sssd-ad to version 0:1.16.5-12.amzn2.15 or higher.
This issue was patched in ALAS2-2026-3828.

NVD Description

Note: Versions mentioned in the description apply only to the upstream sssd-ad package and not the sssd-ad package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

A flaw was found in sssd. When authenticating with a YubiKey, the SSSD PAM responder can crash due to a use-after-free vulnerability, where a memory pointer is incorrectly handled. A local attacker could exploit this flaw by manipulating smartcard or YubiKey contents, leading to a denial of service that disrupts authentication. This vulnerability also presents a potential for privilege escalation, although it is difficult to exploit.

CVSS Base Scores

version 3.1