CVE-2024-26943 (GCVE-0-2024-26943)
Vulnerability from cvelistv5
Published
2024-05-01 05:18
Modified
2025-05-04 09:00
Severity ?
Summary
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 249881232e1471d28b68f9a3829acc14d150cf5d
Version: 249881232e1471d28b68f9a3829acc14d150cf5d
Version: 249881232e1471d28b68f9a3829acc14d150cf5d
Version: 249881232e1471d28b68f9a3829acc14d150cf5d
Version: 249881232e1471d28b68f9a3829acc14d150cf5d
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