Vulnerability CVE-2025-26595: Information

Description

A buffer overflow flaw was found in X.Org and Xwayland. The code in XkbVModMaskText() allocates a fixed-sized buffer on the stack and copies the names of the virtual modifiers to that buffer. The code fails to check the bounds of the buffer and would copy the data regardless of the size.

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:*:*:*:*:*:*:*

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

      ---

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

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