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
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
X.org X server
Default version status: unknown
20.11 to ≤ 21.1.16affected
References
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1081338 ↗
- https://gitlab.freedesktop.org/xorg/xserver/-/issues/1260 ↗
- https://bugs.debian.org/cgi-bin/bugreport.cgi?att=1;bug=1081338;filename=dix-Hold-input-lock-for-AttachDevice.patch;msg=5 ↗
- https://gitlab.freedesktop.org/xorg/xserver/-/commit/dc7cb45482cea6ccec22d117ca0b489500b4d0a0 ↗