CVE-2022-48771: Linux Kernel

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

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

• Linux Linux Kernel: from 4.14, before 4.14.264 (fixed in 4.14.264); from 4.15, before 4.19.227 (fixed in 4.19.227); from 4.20, before 5.4.175 (fixed in 5.4.175); from 5.5, before 5.10.95 (fixed in 5.10.95); from 5.11, before 5.15.18 (fixed in 5.15.18); from 5.16, before 5.16.4 (fixed in 5.16.4); …

Published 2024-06-20. Last modified 2026-08-04.