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Unrated severityNVD Advisory· Published Jun 20, 2024· Updated May 4, 2025

drm/vmwgfx: Fix stale file descriptors on failed usercopy

CVE-2022-48771

Description

In the Linux kernel, the following vulnerability has been resolved:

drm/vmwgfx: Fix stale file descriptors on failed usercopy

A failing usercopy of the fence_rep object will lead to a stale entry in the file descriptor table as put_unused_fd() won't release it. This enables userland to refer to a dangling 'file' object through that still valid file descriptor, leading to all kinds of use-after-free exploitation scenarios.

Fix this by deferring the call to fd_install() until after the usercopy has succeeded.

Affected products

185

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

7

News mentions

0

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