A flaw was found in the X.Org X server and Xwayland when processing X11 Present extension notifications. Improper error handling during notification creation can leave dangling pointers that lead to a use-after-free condition. This can cause memory corruption or a crash, potentially allowing an attacker to execute arbitrary code or cause a denial of service.
Exploitability
AV:LAC:LPR:LUI:NScope
S:UImpact
C:LI:HA:H7.3/CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:HMemory Safety