# CVE-2022-49737

## Summary

- **CVE ID:** CVE-2022-49737
- **Severity:** HIGH
- **CVSS Score:** 7.7 (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:H)
- **CWE:** CWE-413
- **Published:** Mar 16, 2025
- **Last Modified:** Mar 13, 2026

## Description

In X.Org X server 20.11 through 21.1.16, when a client application uses easystroke for mouse gestures, the main thread modifies various data structures used by the input thread without acquiring a lock, aka a race condition. In particular, AttachDevice in dix/devices.c does not acquire an input lock.

## Affected Products

- X.org — X server (20.11)

## References

- [CNA](https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1081338)
- [CNA](https://gitlab.freedesktop.org/xorg/xserver/-/issues/1260)
- [CNA](https://bugs.debian.org/cgi-bin/bugreport.cgi?att=1;bug=1081338;filename=dix-Hold-input-lock-for-AttachDevice.patch;msg=5)
- [CNA](https://gitlab.freedesktop.org/xorg/xserver/-/commit/dc7cb45482cea6ccec22d117ca0b489500b4d0a0)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.20%
- **EPSS Percentile:** 42.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._