Vulnerability CVE-2025-26599: Information

Description

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.

Fixed packages

References to Advisories, Solutions, and Tools

1. Affected configurations:
   1. cpe:2.3:a:tigervnc:tigervnc:-:*:*:*:*:*:*:*

      ---

      cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:*

      End excluding

      21.1.16

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      cpe:2.3:a:x.org:xwayland:*:*:*:*:*:*:*:*

      End excluding

      24.1.6

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      cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*

      ---

      cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*

      ---

      cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*

      ---