CVE-2024-26943
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.
Does this matter?
Lower severity and a low EPSS score (0.22%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.22% probability · 13th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/16e87fe23d4af6df920406494ced5c0f4354567bMailing List, Patch
- https://git.kernel.org/stable/c/2a84744a037b8a511d6a9055f3defddc28ff4a4dMailing List, Patch
- https://git.kernel.org/stable/c/3e82f7383e0b82a835e6b6b06a348b2bc4e2c2eeMailing List, Patch
- https://git.kernel.org/stable/c/5e81773757a95fc298e96cfd6d4700f07b6192a2Mailing List, Patch
- https://git.kernel.org/stable/c/9acfd8b083a0ffbd387566800d89f55058a68af2Mailing List, Patch
- https://git.kernel.org/stable/c/16e87fe23d4af6df920406494ced5c0f4354567bMailing List, Patch
- https://git.kernel.org/stable/c/2a84744a037b8a511d6a9055f3defddc28ff4a4dMailing List, Patch
- https://git.kernel.org/stable/c/3e82f7383e0b82a835e6b6b06a348b2bc4e2c2eeMailing List, Patch
- https://git.kernel.org/stable/c/5e81773757a95fc298e96cfd6d4700f07b6192a2Mailing List, Patch
- https://git.kernel.org/stable/c/9acfd8b083a0ffbd387566800d89f55058a68af2Mailing List, Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.