CVSS 3.1
7.8 highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCVE-2022-50454
High (7.8) in linux linux kernel. EPSS 0.2% chance of exploitation in the next 30 days.
In the Linux kernel, the following vulnerability has been resolved:
drm/nouveau: fix a use-after-free in nouveau_gem_prime_import_sg_table()
nouveau_bo_init() is backed by ttm_bo_init() and ferries its return code
back to the caller. On failures, ttm will call nouveau_bo_del_ttm() and
free the memory.Thus, when nouveau_bo_init() returns an error, the gem
object has already been released. Then the call to nouveau_bo_ref() will
use the freed "nvbo->bo" and lead to a use-after-free bug.
We should delete the call to nouveau_bo_ref() to avoid the use-after-free.
Severity
- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 5% of CVEs (scores of 2026-10-31)
- CWE
- CWE-416
- Published
- Modified
- Record from
- the NVD, synced
Affected
- linux:linux_kernel
References
- https://git.kernel.org/stable/c/3aeda2fe6517cc52663d4ce3588dd43f0d4124a7
- https://git.kernel.org/stable/c/540dfd188ea2940582841c1c220bd035a7db0e51
- https://git.kernel.org/stable/c/56ee9577915dc06f55309901012a9ef68dbdb5a8
- https://git.kernel.org/stable/c/5d6093c49c098d86c7b136aba9922df44aeb6944
- https://git.kernel.org/stable/c/7d80473e9f12548ac05b36af4fb9ce80f2f73509