CVE-2022-48771

Name of the Vulnerable Software and Affected Versions: Linux kernel (affected versions not specified)

Description: The issue is related to the drm/vmwgfx component of the Linux kernel, where a failing usercopy of the fence rep object leads to a stale entry in the file descriptor table. This allows userland to refer to a dangling 'file' object through a still valid file descriptor, enabling various use-after-free exploitation scenarios. The problem arises because put unused fd() does not release the file descriptor, and the fix involves deferring the call to fd install() until after the usercopy has succeeded.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.