Vulnerability 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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.1, < 6.1.84 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/16e87fe23d4af6df920406494ced5c0f4354567bMailing ListPatch
- https://git.kernel.org/stable/c/2a84744a037b8a511d6a9055f3defddc28ff4a4dMailing ListPatch
- https://git.kernel.org/stable/c/3e82f7383e0b82a835e6b6b06a348b2bc4e2c2eeMailing ListPatch
- https://git.kernel.org/stable/c/5e81773757a95fc298e96cfd6d4700f07b6192a2Mailing ListPatch
- https://git.kernel.org/stable/c/9acfd8b083a0ffbd387566800d89f55058a68af2Mailing ListPatch
- https://git.kernel.org/stable/c/16e87fe23d4af6df920406494ced5c0f4354567bMailing ListPatch
- https://git.kernel.org/stable/c/2a84744a037b8a511d6a9055f3defddc28ff4a4dMailing ListPatch
- https://git.kernel.org/stable/c/3e82f7383e0b82a835e6b6b06a348b2bc4e2c2eeMailing ListPatch
- https://git.kernel.org/stable/c/5e81773757a95fc298e96cfd6d4700f07b6192a2Mailing ListPatch
- https://git.kernel.org/stable/c/9acfd8b083a0ffbd387566800d89f55058a68af2Mailing ListPatch
FAQ
What is CVE-2024-26943?
CVE-2024-26943 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 mem...
How severe is CVE-2024-26943?
CVE-2024-26943 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-26943?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.