CVE-2024-56752

Summary

CVE-2024-56752 is a vulnerability affecting the Linux kernel's nouveau driver for NVIDIA GF100 GPUs. The issue lies in the function gf100_gr_chan_new(), where the mutex associated with the GPU's firmware context (gr->fecs.mutex) is not properly unlocked when an error occurs during gf100_grctx_generate() call. This can result in inconsistent behavior and potential instability within the GPU driver. The vulnerability has been resolved by ensuring the mutex is unlocked before returning the error. A smatch warning related to inconsistent returns was also addressed in this fix.

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