CVE-2022-48899 Information

Description

In the Linux kernel the following vulnerability has been resolved:

drm/virtio: Fix GEM handle creation UAF

Userspace can guess the handle value and try to race GEM object creation with handle close resulting in a use-after-free if we dereference the object after dropping the handle’s reference. For that reason dropping the handle’s reference must be done after we are done dereferencing the object.

Reference

https://git.kernel.org/stable/c/19ec87d06acfab2313ee82b2a689bf0c154e57ea https://git.kernel.org/stable/c/d01d6d2b06c0d8390adf8f3ba08aa60b5642ef73 https://git.kernel.org/stable/c/68bcd063857075d2f9edfed6024387ac377923e2 https://git.kernel.org/stable/c/011ecdbcd520c90c344b872ca6b4821f7783b2f8 https://git.kernel.org/stable/c/adc48e5e408afbb01d261bd303fd9fbbbaa3e317 https://git.kernel.org/stable/c/52531258318ed59a2dc5a43df2eaf0eb1d65438e