description: A vulnerability was found in X.Org. This issue occurs due to a dangling pointer in DeepCopyPointerClasses that can be exploited by ProcXkbSetDeviceInfo() and ProcXkbGetDeviceInfo() to read and write into freed memory. This can lead to local privilege elevation on systems where the X server runs privileged and remote code execution for ssh X forwarding sessions.
problem types: CWE-416
affected:
{
vendor: n/a
product: xorg-x11-server
versions:
version: xorg-server 21.1.7, status: affected
}