Access of Uninitialized Pointer Affecting xorg-server package, versions <2:21.1.4-2ubuntu1.7~22.04.13


Severity

Recommended
medium

Based on Ubuntu security rating.

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  • Snyk IDSNYK-UBUNTU2204-XORGSERVER-8746720
  • published26 Feb 2025
  • disclosed25 Feb 2025

Introduced: 25 Feb 2025

NewCVE-2025-26599  (opens in a new tab)
CWE-824  (opens in a new tab)

How to fix?

Upgrade Ubuntu:22.04 xorg-server to version 2:21.1.4-2ubuntu1.7~22.04.13 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xorg-server package and not the xorg-server package as distributed by Ubuntu. See How to fix? for Ubuntu:22.04 relevant fixed versions and status.

An access to an uninitialized pointer flaw was found in X.Org and Xwayland. The function compCheckRedirect() may fail if it cannot allocate the backing pixmap. In that case, compRedirectWindow() will return a BadAlloc error without validating the window tree marked just before, which leaves the validated data partly initialized and the use of an uninitialized pointer later.

CVSS Scores

version 3.1