Vulnerabilities > CVE-2025-26595 - Out-of-bounds Write vulnerability in multiple products

Summary

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.

Vulnerable Configurations

Common Weakness Enumeration (CWE)

• CWE-787 - Out-of-bounds Write

References