github - ghsa-gjv7-5cpp-hqgw

ghsa-gjv7-5cpp-hqgw

Vulnerability from github

Published

2024-09-13 09:30

Modified

2024-10-17 15:31

Severity ?

4.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

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

drm/vmwgfx: Prevent unmapping active read buffers

The kms paths keep a persistent map active to read and compare the cursor buffer. These maps can race with each other in simple scenario where: a) buffer "a" mapped for update b) buffer "a" mapped for compare c) do the compare d) unmap "a" for compare e) update the cursor f) unmap "a" for update At step "e" the buffer has been unmapped and the read contents is bogus.

Prevent unmapping of active read buffers by simply keeping a count of how many paths have currently active maps and unmap only when the count reaches 0.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-46710"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-09-13T07:15:05Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vmwgfx: Prevent unmapping active read buffers\n\nThe kms paths keep a persistent map active to read and compare the cursor\nbuffer. These maps can race with each other in simple scenario where:\na) buffer \"a\" mapped for update\nb) buffer \"a\" mapped for compare\nc) do the compare\nd) unmap \"a\" for compare\ne) update the cursor\nf) unmap \"a\" for update\nAt step \"e\" the buffer has been unmapped and the read contents is bogus.\n\nPrevent unmapping of active read buffers by simply keeping a count of\nhow many paths have currently active maps and unmap only when the count\nreaches 0.",
  "id": "GHSA-gjv7-5cpp-hqgw",
  "modified": "2024-10-17T15:31:08Z",
  "published": "2024-09-13T09:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-46710"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0851b1ec650adadcaa23ec96daad95a55bf966f0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/58a3714db4d9dcaeb9fc4905141e17b9f536c0a5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aba07b9a0587f50e5d3346eaa19019cf3f86c0ea"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d5228d158e4c0b1663b3983044913c15c3d0135e"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

cve-2024-46710

Vulnerability from cvelistv5

Published

2024-09-13 06:33

Modified

2024-12-19 09:21

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Prevent unmapping active read buffers The kms paths keep a persistent map active to read and compare the cursor buffer. These maps can race with each other in simple scenario where: a) buffer "a" mapped for update b) buffer "a" mapped for compare c) do the compare d) unmap "a" for compare e) update the cursor f) unmap "a" for update At step "e" the buffer has been unmapped and the read contents is bogus. Prevent unmapping of active read buffers by simply keeping a count of how many paths have currently active maps and unmap only when the count reaches 0.

References

▼	URL	Tags
	https://git.kernel.org/stable/c/58a3714db4d9dcaeb9fc4905141e17b9f536c0a5
	https://git.kernel.org/stable/c/0851b1ec650adadcaa23ec96daad95a55bf966f0
	https://git.kernel.org/stable/c/d5228d158e4c0b1663b3983044913c15c3d0135e
	https://git.kernel.org/stable/c/aba07b9a0587f50e5d3346eaa19019cf3f86c0ea

Impacted products

Vendor

Product

Version

▼

Linux

Version: 485d98d472d53f9617ffdfba5e677ac29ad4fe20
Version: 485d98d472d53f9617ffdfba5e677ac29ad4fe20
Version: 485d98d472d53f9617ffdfba5e677ac29ad4fe20
Version: 485d98d472d53f9617ffdfba5e677ac29ad4fe20

Linux

Version: 5.19

Show details on NVD website

JSON

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        "metrics": [
          {
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                "id": "CVE-2024-46710",
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                  },
                  {
                    "Technical Impact": "partial"
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                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-29T14:59:47.963109Z",
                "version": "2.0.3"
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              "type": "ssvc"
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        "providerMetadata": {
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}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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