Vulnerability-Lookup

GHSA-V68J-GHQ9-FFVC

Vulnerability from github – Published: 2024-04-17 18:31 – Updated: 2024-04-29 21:30

Details

In the Linux kernel, the following vulnerability has been resolved:

drm/nouveau: fix several DMA buffer leaks

Nouveau manages GSP-RM DMA buffers with nvkm_gsp_mem objects. Several of these buffers are never dealloced. Some of them can be deallocated right after GSP-RM is initialized, but the rest need to stay until the driver unloads.

Also futher bullet-proof these objects by poisoning the buffer and clearing the nvkm_gsp_mem object when it is deallocated. Poisoning the buffer should trigger an error (or crash) from GSP-RM if it tries to access the buffer after we've deallocated it, because we were wrong about when it is safe to deallocate.

Finally, change the mem->size field to a size_t because that's the same type that dma_alloc_coherent expects.

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2024-26912"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-04-17T16:15:07Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/nouveau: fix several DMA buffer leaks\n\nNouveau manages GSP-RM DMA buffers with nvkm_gsp_mem objects.  Several of\nthese buffers are never dealloced.  Some of them can be deallocated\nright after GSP-RM is initialized, but the rest need to stay until the\ndriver unloads.\n\nAlso futher bullet-proof these objects by poisoning the buffer and\nclearing the nvkm_gsp_mem object when it is deallocated.  Poisoning\nthe buffer should trigger an error (or crash) from GSP-RM if it tries\nto access the buffer after we\u0027ve deallocated it, because we were wrong\nabout when it is safe to deallocate.\n\nFinally, change the mem-\u003esize field to a size_t because that\u0027s the same\ntype that dma_alloc_coherent expects.",
  "id": "GHSA-v68j-ghq9-ffvc",
  "modified": "2024-04-29T21:30:34Z",
  "published": "2024-04-17T18:31:32Z",
  "references": [
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}

CVE-2024-26912 (GCVE-0-2024-26912)

Vulnerability from cvelistv5 – Published: 2024-04-17 15:59 – Updated: 2026-05-11 20:06

Title

drm/nouveau: fix several DMA buffer leaks

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/nouveau: fix several DMA buffer leaks Nouveau manages GSP-RM DMA buffers with nvkm_gsp_mem objects. Several of these buffers are never dealloced. Some of them can be deallocated right after GSP-RM is initialized, but the rest need to stay until the driver unloads. Also futher bullet-proof these objects by poisoning the buffer and clearing the nvkm_gsp_mem object when it is deallocated. Poisoning the buffer should trigger an error (or crash) from GSP-RM if it tries to access the buffer after we've deallocated it, because we were wrong about when it is safe to deallocate. Finally, change the mem->size field to a size_t because that's the same type that dma_alloc_coherent expects.

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-05-28 19:48 UTC

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 7056 records in the last 180 days details

References

2 references

URL	Tags
https://git.kernel.org/stable/c/6190d4c08897d748d…
https://git.kernel.org/stable/c/042b5f83841fbf7ce…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 176fdcbddfd288408ce8571c1760ad618d962096 , < 6190d4c08897d748dd25f0b78267a90aa1694e15 (git) Affected: 176fdcbddfd288408ce8571c1760ad618d962096 , < 042b5f83841fbf7ce39474412db3b5e4765a7ea7 (git)
Linux	Linux	Affected: 6.7 Unaffected: 0 , < 6.7 (semver) Unaffected: 6.7.6 , ≤ 6.7.* (semver) Unaffected: 6.8 , ≤ * (original_commit_for_fix)

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Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.

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