github - ghsa-4whh-7h4c-xh74

GHSA-4WHH-7H4C-XH74

Vulnerability from github – Published: 2025-09-05 18:31 – Updated: 2025-11-03 18:31

Details

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

vsock/virtio: Validate length in packet header before skb_put()

When receiving a vsock packet in the guest, only the virtqueue buffer size is validated prior to virtio_vsock_skb_rx_put(). Unfortunately, virtio_vsock_skb_rx_put() uses the length from the packet header as the length argument to skb_put(), potentially resulting in SKB overflow if the host has gone wonky.

Validate the length as advertised by the packet header before calling virtio_vsock_skb_rx_put().

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{
  "affected": [],
  "aliases": [
    "CVE-2025-39718"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-05T18:15:49Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nvsock/virtio: Validate length in packet header before skb_put()\n\nWhen receiving a vsock packet in the guest, only the virtqueue buffer\nsize is validated prior to virtio_vsock_skb_rx_put(). Unfortunately,\nvirtio_vsock_skb_rx_put() uses the length from the packet header as the\nlength argument to skb_put(), potentially resulting in SKB overflow if\nthe host has gone wonky.\n\nValidate the length as advertised by the packet header before calling\nvirtio_vsock_skb_rx_put().",
  "id": "GHSA-4whh-7h4c-xh74",
  "modified": "2025-11-03T18:31:39Z",
  "published": "2025-09-05T18:31:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39718"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0dab92484474587b82e8e0455839eaf5ac7bf894"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/676f03760ca1d69c2470cef36c44dc152494b47c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/969b06bd8b7560efb100a34227619e7d318fbe05"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ee438c492b2e0705d819ac0e25d04fae758d8f8f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/faf332a10372390ce65d0b803888f4b25a388335"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-39718 (GCVE-0-2025-39718)

Vulnerability from cvelistv5 – Published: 2025-09-05 17:21 – Updated: 2025-11-03 17:42

Summary

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: Validate length in packet header before skb_put() When receiving a vsock packet in the guest, only the virtqueue buffer size is validated prior to virtio_vsock_skb_rx_put(). Unfortunately, virtio_vsock_skb_rx_put() uses the length from the packet header as the length argument to skb_put(), potentially resulting in SKB overflow if the host has gone wonky. Validate the length as advertised by the packet header before calling virtio_vsock_skb_rx_put().

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/969b06bd8b7560efb…
	https://git.kernel.org/stable/c/ee438c492b2e0705d…
	https://git.kernel.org/stable/c/faf332a10372390ce…
	https://git.kernel.org/stable/c/676f03760ca1d69c2…
	https://git.kernel.org/stable/c/0dab92484474587b8…

Impacted products

Vendor

Product

Version

Linux

Affected: baddcc2c71572968cdaeee1c4ab3dc0ad90fa765 , < 969b06bd8b7560efb100a34227619e7d318fbe05 (git)
Affected: 71dc9ec9ac7d3eee785cdc986c3daeb821381e20 , < ee438c492b2e0705d819ac0e25d04fae758d8f8f (git)
Affected: 71dc9ec9ac7d3eee785cdc986c3daeb821381e20 , < faf332a10372390ce65d0b803888f4b25a388335 (git)
Affected: 71dc9ec9ac7d3eee785cdc986c3daeb821381e20 , < 676f03760ca1d69c2470cef36c44dc152494b47c (git)
Affected: 71dc9ec9ac7d3eee785cdc986c3daeb821381e20 , < 0dab92484474587b82e8e0455839eaf5ac7bf894 (git)

Linux

Affected: 6.3
Unaffected: 0 , < 6.3 (semver)
Unaffected: 6.1.149 , ≤ 6.1.* (semver)
Unaffected: 6.6.103 , ≤ 6.6.* (semver)
Unaffected: 6.12.44 , ≤ 6.12.* (semver)
Unaffected: 6.16.4 , ≤ 6.16.* (semver)
Unaffected: 6.17 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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        "providerMetadata": {
          "dateUpdated": "2025-11-03T17:42:44.024Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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              "versionType": "git"
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.3"
            },
            {
              "lessThan": "6.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.103",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.44",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.16.*",
              "status": "unaffected",
              "version": "6.16.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.17",
              "versionType": "original_commit_for_fix"
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        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvsock/virtio: Validate length in packet header before skb_put()\n\nWhen receiving a vsock packet in the guest, only the virtqueue buffer\nsize is validated prior to virtio_vsock_skb_rx_put(). Unfortunately,\nvirtio_vsock_skb_rx_put() uses the length from the packet header as the\nlength argument to skb_put(), potentially resulting in SKB overflow if\nthe host has gone wonky.\n\nValidate the length as advertised by the packet header before calling\nvirtio_vsock_skb_rx_put()."
        }
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          "url": "https://git.kernel.org/stable/c/faf332a10372390ce65d0b803888f4b25a388335"
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          "url": "https://git.kernel.org/stable/c/676f03760ca1d69c2470cef36c44dc152494b47c"
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        {
          "url": "https://git.kernel.org/stable/c/0dab92484474587b82e8e0455839eaf5ac7bf894"
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    "datePublished": "2025-09-05T17:21:25.959Z",
    "dateReserved": "2025-04-16T07:20:57.117Z",
    "dateUpdated": "2025-11-03T17:42:44.024Z",
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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-4WHH-7H4C-XH74

CVE-2025-39718 (GCVE-0-2025-39718)

Tags

Sightings

Nomenclature