Description
In the Linux kernel, the following vulnerability has been resolved: nouveau/dmem: handle kcalloc() allocation failure The kcalloc() in nouveau_dmem_evict_chunk() will return null if the physical memory has run out. As a result, if we dereference src_pfns, dst_pfns or dma_addrs, the null pointer dereference bugs will happen. Moreover, the GPU is going away. If the kcalloc() fails, we could not evict all pages mapping a chunk. So this patch adds a __GFP_NOFAIL flag in kcalloc(). Finally, as there is no need to have physically contiguous memory, this patch switches kcalloc() to kvcalloc() in order to avoid failing allocations.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
249881232e1471d28b68f9a3829acc14d150cf5d to < 9acfd8b083a0ffbd387566800d89f55058a68af2affected249881232e1471d28b68f9a3829acc14d150cf5d to < 2a84744a037b8a511d6a9055f3defddc28ff4a4daffected249881232e1471d28b68f9a3829acc14d150cf5d to < 5e81773757a95fc298e96cfd6d4700f07b6192a2affected249881232e1471d28b68f9a3829acc14d150cf5d to < 3e82f7383e0b82a835e6b6b06a348b2bc4e2c2eeaffected249881232e1471d28b68f9a3829acc14d150cf5d to < 16e87fe23d4af6df920406494ced5c0f4354567baffected
Linux Linux
Default version status: affected
6.1affected0 to < 6.1unaffected6.1.84 to ≤ 6.1.*unaffected6.6.24 to ≤ 6.6.*unaffected6.7.12 to ≤ 6.7.*unaffected6.8.3 to ≤ 6.8.*unaffected6.9 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/9acfd8b083a0ffbd387566800d89f55058a68af2 ↗
- https://git.kernel.org/stable/c/2a84744a037b8a511d6a9055f3defddc28ff4a4d ↗
- https://git.kernel.org/stable/c/5e81773757a95fc298e96cfd6d4700f07b6192a2 ↗
- https://git.kernel.org/stable/c/3e82f7383e0b82a835e6b6b06a348b2bc4e2c2ee ↗
- https://git.kernel.org/stable/c/16e87fe23d4af6df920406494ced5c0f4354567b ↗