Use After Free Affecting tigervnc package, versions <0:1.13.1-15.el8_10


Severity

Recommended
0.0
high
0
10

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-ALMALINUX8-TIGERVNC-9462731
  • published18 Mar 2025
  • disclosed10 Mar 2025

Introduced: 10 Mar 2025

NewCVE-2025-26594  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 tigervnc to version 0:1.13.1-15.el8_10 or higher.
This issue was patched in ALSA-2025:2502.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tigervnc package and not the tigervnc package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

A use-after-free flaw was found in X.Org and Xwayland. The root cursor is referenced in the X server as a global variable. If a client frees the root cursor, the internal reference points to freed memory and causes a use-after-free.

CVSS Base Scores

version 3.1