Use After Free Affecting tigervnc-server-minimal package, versions <0:1.8.0-24.amzn2.0.7


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.26% (18th percentile)

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  • Snyk IDSNYK-AMZN2-TIGERVNCSERVERMINIMAL-13879971
  • published11 Nov 2025
  • disclosed30 Oct 2025

Introduced: 30 Oct 2025

CVE-2025-62230  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 tigervnc-server-minimal to version 0:1.8.0-24.amzn2.0.7 or higher.
This issue was patched in ALAS2-2025-3065.

NVD Description

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

A flaw was discovered in the X.Org X server’s X Keyboard (Xkb) extension when handling client resource cleanup. The software frees certain data structures without properly detaching related resources, leading to a use-after-free condition. This can cause memory corruption or a crash when affected clients disconnect.

References

CVSS Base Scores

version 3.1