Tracker / CVE-2022-48771
CVE-2022-48771
High 7.8
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 and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 4.14 → 4.14.264 |
| linux | linux_kernel · 4.15 → 4.19.227 |
| linux | linux_kernel · 4.20 → 5.4.175 |
| linux | linux_kernel · 5.11 → 5.15.18 |
| linux | linux_kernel · 5.16 → 5.16.4 |
| linux | linux_kernel · 5.5 → 5.10.95 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.