CVE-2022-49737

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.

CVSS v3.1 Score

7.7

HIGH

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:H

Weakness Type (CWE)

CWE-413 CWE-413

References

Other References

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

Frequently Asked Questions

What is CVE-2022-49737? +

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. It has a CVSS v3.1 base score of 7.7 (HIGH).

How severe is CVE-2022-49737? +

CVE-2022-49737 has a CVSS v3.1 score of 7.7 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

How do I check if I'm vulnerable to CVE-2022-49737? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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