CVE-2022-50454
drm/nouveau: fix a use-after-free in nouveau_gem_prime_import_sg_table()
Description
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.
INFO
Published Date :
Oct. 1, 2025, 12:15 p.m.
Last Modified :
Oct. 2, 2025, 7:12 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Delete the call to nouveau_bo_ref() in the error path.
References to Advisories, Solutions, and Tools
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CVE-2022-50454.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-50454 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
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stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-50454
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 01, 2025
Action Type Old Value New Value Added Description 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. Added Reference https://git.kernel.org/stable/c/3aeda2fe6517cc52663d4ce3588dd43f0d4124a7 Added Reference https://git.kernel.org/stable/c/540dfd188ea2940582841c1c220bd035a7db0e51 Added Reference https://git.kernel.org/stable/c/56ee9577915dc06f55309901012a9ef68dbdb5a8 Added Reference https://git.kernel.org/stable/c/5d6093c49c098d86c7b136aba9922df44aeb6944 Added Reference https://git.kernel.org/stable/c/7d80473e9f12548ac05b36af4fb9ce80f2f73509 Added Reference https://git.kernel.org/stable/c/861f085f81fd569b02cc2c11165a9e6cca144424