github - ghsa-m8rm-pc2x-rqv9

GHSA-M8RM-PC2X-RQV9

Vulnerability from github – Published: 2024-10-21 18:31 – Updated: 2025-11-04 00:31

Details

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

net/mlx5: Fix error path in multi-packet WQE transmit

Remove the erroneous unmap in case no DMA mapping was established

The multi-packet WQE transmit code attempts to obtain a DMA mapping for the skb. This could fail, e.g. under memory pressure, when the IOMMU driver just can't allocate more memory for page tables. While the code tries to handle this in the path below the err_unmap label it erroneously unmaps one entry from the sq's FIFO list of active mappings. Since the current map attempt failed this unmap is removing some random DMA mapping that might still be required. If the PCI function now presents that IOVA, the IOMMU may assumes a rogue DMA access and e.g. on s390 puts the PCI function in error state.

The erroneous behavior was seen in a stress-test environment that created memory pressure.

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-2024-50001"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-755"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-21T18:15:20Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: Fix error path in multi-packet WQE transmit\n\nRemove the erroneous unmap in case no DMA mapping was established\n\nThe multi-packet WQE transmit code attempts to obtain a DMA mapping for\nthe skb. This could fail, e.g. under memory pressure, when the IOMMU\ndriver just can\u0027t allocate more memory for page tables. While the code\ntries to handle this in the path below the err_unmap label it erroneously\nunmaps one entry from the sq\u0027s FIFO list of active mappings. Since the\ncurrent map attempt failed this unmap is removing some random DMA mapping\nthat might still be required. If the PCI function now presents that IOVA,\nthe IOMMU may assumes a rogue DMA access and e.g. on s390 puts the PCI\nfunction in error state.\n\nThe erroneous behavior was seen in a stress-test environment that created\nmemory pressure.",
  "id": "GHSA-m8rm-pc2x-rqv9",
  "modified": "2025-11-04T00:31:44Z",
  "published": "2024-10-21T18:31:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-50001"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/26fad69b34fcba80d5c7d9e651f628e6ac927754"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2bcae12c795f32ddfbf8c80d1b5f1d3286341c32"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8bb8c12fb5e2b1f03d603d493c92941676f109b5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ca36d6c1a49b6965c86dd528a73f38bc62d9c625"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ce828b347cf1b3c1b12b091d02463c35ce5097f5"
    },
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      "url": "https://git.kernel.org/stable/c/ecf310aaf256acbc8182189fe0aa1021c3ddef72"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fc357e78176945ca7bcacf92ab794b9ccd41b4f4"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2024-50001 (GCVE-0-2024-50001)

Vulnerability from cvelistv5 – Published: 2024-10-21 18:02 – Updated: 2025-11-03 22:24

Title

net/mlx5: Fix error path in multi-packet WQE transmit

Summary

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Fix error path in multi-packet WQE transmit Remove the erroneous unmap in case no DMA mapping was established The multi-packet WQE transmit code attempts to obtain a DMA mapping for the skb. This could fail, e.g. under memory pressure, when the IOMMU driver just can't allocate more memory for page tables. While the code tries to handle this in the path below the err_unmap label it erroneously unmaps one entry from the sq's FIFO list of active mappings. Since the current map attempt failed this unmap is removing some random DMA mapping that might still be required. If the PCI function now presents that IOVA, the IOMMU may assumes a rogue DMA access and e.g. on s390 puts the PCI function in error state. The erroneous behavior was seen in a stress-test environment that created memory pressure.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/ca36d6c1a49b6965c…
	https://git.kernel.org/stable/c/ce828b347cf1b3c1b…
	https://git.kernel.org/stable/c/fc357e78176945ca7…
	https://git.kernel.org/stable/c/26fad69b34fcba80d…
	https://git.kernel.org/stable/c/ecf310aaf256acbc8…
	https://git.kernel.org/stable/c/8bb8c12fb5e2b1f03…
	https://git.kernel.org/stable/c/2bcae12c795f32ddf…

Impacted products

Vendor

Product

Version

Linux

Affected: 5af75c747e2a868abbf8611494b50ed5e076fca7 , < ca36d6c1a49b6965c86dd528a73f38bc62d9c625 (git)
Affected: 5af75c747e2a868abbf8611494b50ed5e076fca7 , < ce828b347cf1b3c1b12b091d02463c35ce5097f5 (git)
Affected: 5af75c747e2a868abbf8611494b50ed5e076fca7 , < fc357e78176945ca7bcacf92ab794b9ccd41b4f4 (git)
Affected: 5af75c747e2a868abbf8611494b50ed5e076fca7 , < 26fad69b34fcba80d5c7d9e651f628e6ac927754 (git)
Affected: 5af75c747e2a868abbf8611494b50ed5e076fca7 , < ecf310aaf256acbc8182189fe0aa1021c3ddef72 (git)
Affected: 5af75c747e2a868abbf8611494b50ed5e076fca7 , < 8bb8c12fb5e2b1f03d603d493c92941676f109b5 (git)
Affected: 5af75c747e2a868abbf8611494b50ed5e076fca7 , < 2bcae12c795f32ddfbf8c80d1b5f1d3286341c32 (git)

Linux

Affected: 5.10
Unaffected: 0 , < 5.10 (semver)
Unaffected: 5.10.227 , ≤ 5.10.* (semver)
Unaffected: 5.15.168 , ≤ 5.15.* (semver)
Unaffected: 6.1.113 , ≤ 6.1.* (semver)
Unaffected: 6.6.55 , ≤ 6.6.* (semver)
Unaffected: 6.10.14 , ≤ 6.10.* (semver)
Unaffected: 6.11.3 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-M8RM-PC2X-RQV9

CVE-2024-50001 (GCVE-0-2024-50001)

Tags

Sightings

Nomenclature