CVE-2025-26599
Full vulnerability record from the local CVENow database.
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.
Severity
HIGH
CVSS score
7.8
(v3.1)
Vulnerability status
Modified
Source identifier
Published
2025-02-25 16:15:39.163000
Last modified
2026-11-04 22:17:31.143000
View original CVE JSON
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"lastModified": "2026-11-04T22:17:31.143",
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"value": "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."
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"value": "Se encontró un error en el acceso a un puntero no inicializado en X.Org y Xwayland. La función compCheckRedirect() puede fallar si no puede asignar el mapa de píxeles de respaldo. En ese caso, compRedirectWindow() devolverá un error BadAlloc sin validar el árbol de ventanas marcado justo antes, lo que deja los datos validados parcialmente inicializados y el uso de un puntero no inicializado más adelante."
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