Vulnerability-Lookup

GHSA-WXC5-FQ68-H9MH

Vulnerability from github – Published: 2024-09-04 21:30 – Updated: 2025-11-04 00:31

Details

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

parisc: fix a possible DMA corruption

ARCH_DMA_MINALIGN was defined as 16 - this is too small - it may be possible that two unrelated 16-byte allocations share a cache line. If one of these allocations is written using DMA and the other is written using cached write, the value that was written with DMA may be corrupted.

This commit changes ARCH_DMA_MINALIGN to be 128 on PA20 and 32 on PA1.1 - that's the largest possible cache line size.

As different parisc microarchitectures have different cache line size, we define arch_slab_minalign(), cache_line_size() and dma_get_cache_alignment() so that the kernel may tune slab cache parameters dynamically, based on the detected cache line size.

Severity

7.8 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2024-44949"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-09-04T19:15:30Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nparisc: fix a possible DMA corruption\n\nARCH_DMA_MINALIGN was defined as 16 - this is too small - it may be\npossible that two unrelated 16-byte allocations share a cache line. If\none of these allocations is written using DMA and the other is written\nusing cached write, the value that was written with DMA may be\ncorrupted.\n\nThis commit changes ARCH_DMA_MINALIGN to be 128 on PA20 and 32 on PA1.1 -\nthat\u0027s the largest possible cache line size.\n\nAs different parisc microarchitectures have different cache line size, we\ndefine arch_slab_minalign(), cache_line_size() and\ndma_get_cache_alignment() so that the kernel may tune slab cache\nparameters dynamically, based on the detected cache line size.",
  "id": "GHSA-wxc5-fq68-h9mh",
  "modified": "2025-11-04T00:31:20Z",
  "published": "2024-09-04T21:30:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-44949"
    },
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      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/00baca74fb5879e5f9034b6156671301f500f8ee"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3dfd8991ad33b10c2fb027a4cfcf57579fa786c1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/533de2f470baac40d3bf622fe631f15231a03c9f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/642a0b7453daff0295310774016fcb56d1f5bc7f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7ae04ba36b381bffe2471eff3a93edced843240f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dadac97f066a67334268132c1e2d0fd599fbcbec"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    }
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  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
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}

CVE-2024-44949 (GCVE-0-2024-44949)

Vulnerability from cvelistv5 – Published: 2024-09-04 18:35 – Updated: 2026-08-05 11:37

Title

parisc: fix a possible DMA corruption

Summary

In the Linux kernel, the following vulnerability has been resolved: parisc: fix a possible DMA corruption ARCH_DMA_MINALIGN was defined as 16 - this is too small - it may be possible that two unrelated 16-byte allocations share a cache line. If one of these allocations is written using DMA and the other is written using cached write, the value that was written with DMA may be corrupted. This commit changes ARCH_DMA_MINALIGN to be 128 on PA20 and 32 on PA1.1 - that's the largest possible cache line size. As different parisc microarchitectures have different cache line size, we define arch_slab_minalign(), cache_line_size() and dma_get_cache_alignment() so that the kernel may tune slab cache parameters dynamically, based on the detected cache line size.

Severity

7.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-10 17:40 UTC

Assigner

Linux CNA under the mitre root

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

References

5 references

URL	Tags
https://git.kernel.org/stable/c/00baca74fb5879e5f…
https://git.kernel.org/stable/c/642a0b7453daff029…
https://git.kernel.org/stable/c/533de2f470baac40d…
https://git.kernel.org/stable/c/7ae04ba36b381bffe…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: a01fece2e4185ac173abd16d10304d73d47ebf00 , < 00baca74fb5879e5f9034b6156671301f500f8ee (git) Affected: a01fece2e4185ac173abd16d10304d73d47ebf00 , < 642a0b7453daff0295310774016fcb56d1f5bc7f (git) Affected: a01fece2e4185ac173abd16d10304d73d47ebf00 , < 533de2f470baac40d3bf622fe631f15231a03c9f (git) Affected: a01fece2e4185ac173abd16d10304d73d47ebf00 , < 7ae04ba36b381bffe2471eff3a93edced843240f (git)
Linux	Linux	Affected: 4.4 Unaffected: 0 , < 4.4 (semver) Unaffected: 6.1.119 , ≤ 6.1.* (semver) Unaffected: 6.6.46 , ≤ 6.6.* (semver) Unaffected: 6.10.5 , ≤ 6.10.* (semver) Unaffected: 6.11 , ≤ * (original_commit_for_fix)

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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.

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