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.
[
{
"vendor": "n/a",
"product": "xorg-x11-server",
"versions": [
{
"version": "xorg-server 21.1.7",
"status": "affected"
}
]
}
]