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Security releases

X.org

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

CVE-2026-93520 Oct 28, 2026 Source: Vendor

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.

Source of record The credited names below are quoted verbatim from the vendor's own advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-93520
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Credited

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CVE-2026-93520 BR2026-0000-037831 unclaimed
Credited as Anonymous working with TrendAI Zero Day Initiative