CVEvulnerability

CVE-2024-26943

5.5 MEDIUM Published 2024-05-01 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2024-05-01
Last modified
2026-06-17
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-476

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 configurations

• linux linux kernel (>= 6.1 < 6.1.84) • linux linux kernel (>= 6.2 < 6.6.24) • linux linux kernel (>= 6.7 < 6.7.12) • linux linux kernel (>= 6.8 < 6.8.3) • linux linux kernel 6.9

Related

Weakness · CWE (1)

  • CWE-476 NULL Pointer Dereference weakness

References