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GHSA-6QX7-M4QH-J7CP

Vulnerability from github – Published: 2024-05-21 15:31 – Updated: 2024-07-03 18:42

Details

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

virtio-net: fix pages leaking when building skb in big mode

We try to use build_skb() if we had sufficient tailroom. But we forget to release the unused pages chained via private in big mode which will leak pages. Fixing this by release the pages after building the skb in big mode.

Severity

5.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2021-47367"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-21T15:15:22Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nvirtio-net: fix pages leaking when building skb in big mode\n\nWe try to use build_skb() if we had sufficient tailroom. But we forget\nto release the unused pages chained via private in big mode which will\nleak pages. Fixing this by release the pages after building the skb in\nbig mode.",
  "id": "GHSA-6qx7-m4qh-j7cp",
  "modified": "2024-07-03T18:42:50Z",
  "published": "2024-05-21T15:31:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47367"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/afd92d82c9d715fb97565408755acad81573591a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f020bb63b5d2e5576acadd10e158fe3b04af67ba"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2021-47367 (GCVE-0-2021-47367)

Vulnerability from cvelistv5 – Published: 2024-05-21 15:03 – Updated: 2026-05-11 13:53

Title

virtio-net: fix pages leaking when building skb in big mode

Summary

In the Linux kernel, the following vulnerability has been resolved: virtio-net: fix pages leaking when building skb in big mode We try to use build_skb() if we had sufficient tailroom. But we forget to release the unused pages chained via private in big mode which will leak pages. Fixing this by release the pages after building the skb in big mode.

Severity

5.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-06-06 15:00 UTC

CWE

CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6843 records in the last 180 days details

References

2 references

URL	Tags
https://git.kernel.org/stable/c/f020bb63b5d2e5576…
https://git.kernel.org/stable/c/afd92d82c9d715fb9…

Impacted products

8 products

Vendor	Product	Version
Linux	Linux	Affected: fb32856b16ad9d5bcd75b76a274e2c515ac7b9d7 , < f020bb63b5d2e5576acadd10e158fe3b04af67ba (git) Affected: fb32856b16ad9d5bcd75b76a274e2c515ac7b9d7 , < afd92d82c9d715fb97565408755acad81573591a (git)
Linux	Linux	Affected: 5.13 Unaffected: 0 , < 5.13 (semver) Unaffected: 5.14.9 , ≤ 5.14.* (semver) Unaffected: 5.15 , ≤ * (original_commit_for_fix)
linux	linux_kernel	Affected: 5.13 cpe:2.3:o:linux:linux_kernel:-:::::::*
linux	linux_kernel	Affected: fb32856b16ad , < f020bb63b5d2 (custom) cpe:2.3:o:linux:linux_kernel:-:::::::*
linux	linux_kernel	Affected: fb32856b16ad , < afd92d82c9d7 (custom) cpe:2.3:o:linux:linux_kernel:-:::::::*
linux	linux_kernel	Unaffected: 0 , < 5.13 (custom) cpe:2.3:o:linux:linux_kernel:-:::::::*
linux	linux_kernel	Unaffected: 5.15 cpe:2.3:o:linux:linux_kernel:-:::::::*
linux	linux_kernel	Unaffected: 5.14.9 , ≤ 5.15 (custom) cpe:2.3:o:linux:linux_kernel:-:::::::*

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              "baseScore": 5.5,
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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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