CVSS 7.8 (high) · published 2026-10-28
A heap buffer overflow caused by mismatching size calculations between XkbAllocNames and ChangeKeycodeRange in X.org X server before 2.1.25 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-2026-93520
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