CVE-2026-93520
A heap buffer overflow caused by mismatching size calculations between XkbAllocNames and …
- Risk score
- 47/100
- CVSS
- 7.8 v3.1
- Published
- 28 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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.
- Affected
- See advisory
- Fix
- Upgrade the product to 2.1.25 or 24.1.14 (whichever matches your release line), or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 7.8 high
References
Original description
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.
Last activity 28 Oct 2026. Patch Forecast updates every hour.