A flaw was found in xorg-x11-server before 1.20.3. An incorrect permission check for -modulepath and -logfile options when starting Xorg. X server allows unprivileged users with the ability to log in to the system via physical console to escalate their privileges and run arbitrary code under root privileges.
Exploitability
AV:PAC:LPR:LUI:NScope
S:UImpact
C:HI:HA:H6.6/CVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H