CVE-2025-26595
Full vulnerability record from the local CVENow database.
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.
Severity
HIGH
CVSS score
7.8
(v3.1)
Vulnerability status
Modified
Source identifier
Published
2025-02-25 16:15:38.390000
Last modified
2026-11-04 22:17:30.020000
View original CVE JSON
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"lastModified": "2026-11-04T22:17:30.020",
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"value": "Se encontró una falla de desbordamiento de búfer en X.Org y Xwayland. El código en XkbVModMaskText() asigna un búfer de tamaño fijo en la pila y copia los nombres de los modificadores virtuales en ese búfer. El código no verifica los límites del búfer y copia los datos independientemente del tamaño."
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