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CVE-2024-26943 Detail

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.


Metrics

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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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Hyperlink Resource
https://git.kernel.org/stable/c/16e87fe23d4af6df920406494ced5c0f4354567b
https://git.kernel.org/stable/c/2a84744a037b8a511d6a9055f3defddc28ff4a4d
https://git.kernel.org/stable/c/3e82f7383e0b82a835e6b6b06a348b2bc4e2c2ee
https://git.kernel.org/stable/c/5e81773757a95fc298e96cfd6d4700f07b6192a2
https://git.kernel.org/stable/c/9acfd8b083a0ffbd387566800d89f55058a68af2

Weakness Enumeration

CWE-ID CWE Name Source

Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2024-26943
NVD Published Date:
05/01/2024
NVD Last Modified:
05/01/2024
Source:
kernel.org