CVSS 7.8 (high) · published 2026-10-28
A buffer overflow when handling pointer barriers in the XFIXES extension in X.Org X server before 21.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially execute code in X server context.
Weakness: CWE-122
Source: NVD CVE-2026-93519
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