CVE-2024-26943 (GCVE-0-2024-26943)

Vulnerability from cvelistv5 – Published: 2024-05-01 05:18 – Updated: 2026-05-11 20:07
VLAI?
Title
nouveau/dmem: handle kcalloc() allocation failure
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 249881232e1471d28b68f9a3829acc14d150cf5d , < 9acfd8b083a0ffbd387566800d89f55058a68af2 (git)
Affected: 249881232e1471d28b68f9a3829acc14d150cf5d , < 2a84744a037b8a511d6a9055f3defddc28ff4a4d (git)
Affected: 249881232e1471d28b68f9a3829acc14d150cf5d , < 5e81773757a95fc298e96cfd6d4700f07b6192a2 (git)
Affected: 249881232e1471d28b68f9a3829acc14d150cf5d , < 3e82f7383e0b82a835e6b6b06a348b2bc4e2c2ee (git)
Affected: 249881232e1471d28b68f9a3829acc14d150cf5d , < 16e87fe23d4af6df920406494ced5c0f4354567b (git)
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Linux Linux Affected: 6.1
Unaffected: 0 , < 6.1 (semver)
Unaffected: 6.1.84 , ≤ 6.1.* (semver)
Unaffected: 6.6.24 , ≤ 6.6.* (semver)
Unaffected: 6.7.12 , ≤ 6.7.* (semver)
Unaffected: 6.8.3 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
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}


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Taxonomy of the tags.




Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.