HIGH 7.8 NVD

CVE-2026-93520

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

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.

References

https://gitlab.freedesktop.org/xorg/xserver/-/commit/b941a473e06f26a407a9adb15759be79f7418

Published: 2026-10-28 · Source: NVD · Feed updated: 2026-10-28

This high severity vulnerability with a CVSS score of 7.8 was published on 2026-10-28 via NVD.

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