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Fencer Vulns
high 7.7

CVE-2022-49737 json

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 dat…

published 2025-03-16 19 mo ago modified 2026-06-17 4 mo ago also EUVD-2022-55160

cvss
7.7
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 27%
public exploits
0
none known

Summary

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.

Patch / fix

  • xorg-server Debian 12 2:21.1.7-3+deb12u13
  • xorg-server Debian 14, Debian 13 2:21.1.16-1.1

debian advisories DEBIAN-CVE-2022-49737

  • xorg-server Ubuntu 26.04 LTS, Ubuntu 25.10 2:21.1.18-1ubuntu1

ubuntu advisories UBUNTU-CVE-2022-49737

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • xorg-x11-server SLE Module for Development Tools 15 SP6, SLE Module for Basesystem 15 SP6, openSUSE Leap 15.6 21.1.11-150600.5.9.1

suse advisories SUSE-SU-2025:0984-1

  • xorg-x11-server openSUSE Tumbleweed 21.1.15-3.1

opensuse advisories openSUSE-SU-2025:14916-1

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
19 mo ago

Exploit prediction

0.34% chance of exploitation in the next 30 days, higher than 27% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugs.debian.org https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1081338 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.7 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:H

Affected products

  • X.org X server

Classification

Weakness
  • CWE-413 Improper Resource Locking

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.