In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: install stub fence into potential unused fence pointers When using cpu to update page tables, vm update fences are unused. Install stub fence into these fence pointers instead of NULL to avoid NULL dereference when calling dma_fence_wait() on them.
https://git.kernel.org/stable/c/aa9e9ba5748c524eb0925a2ef6984b78793646d6
https://git.kernel.org/stable/c/78b25110eb8c6990f7f5096bc0136c12a2b4cc99
https://git.kernel.org/stable/c/187916e6ed9d0c3b3abc27429f7a5f8c936bd1f0