github - ghsa-gp3c-chw3-pxcc

ghsa-gp3c-chw3-pxcc

Vulnerability from github

Published

2025-12-04 18:30

Modified

2025-12-04 18:30

Details

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

virtio-net: zero unused hash fields

When GSO tunnel is negotiated virtio_net_hdr_tnl_from_skb() tries to initialize the tunnel metadata but forget to zero unused rxhash fields. This may leak information to another side. Fixing this by zeroing the unused hash fields.

Show details on source website

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2025-40236"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-04T16:16:16Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nvirtio-net: zero unused hash fields\n\nWhen GSO tunnel is negotiated virtio_net_hdr_tnl_from_skb() tries to\ninitialize the tunnel metadata but forget to zero unused rxhash\nfields. This may leak information to another side. Fixing this by\nzeroing the unused hash fields.",
  "id": "GHSA-gp3c-chw3-pxcc",
  "modified": "2025-12-04T18:30:52Z",
  "published": "2025-12-04T18:30:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40236"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b2284768c6b32aa224ca7d0ef0741beb434f03aa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b625d231c66a6041e98817ffc944bf6e4c45b2e3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-40236 (GCVE-0-2025-40236)

Vulnerability from cvelistv5

Published

2025-12-04 15:31

Modified

2025-12-04 15:31

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: virtio-net: zero unused hash fields When GSO tunnel is negotiated virtio_net_hdr_tnl_from_skb() tries to initialize the tunnel metadata but forget to zero unused rxhash fields. This may leak information to another side. Fixing this by zeroing the unused hash fields.

References

URL

Tags

	https://git.kernel.org/stable/c/b625d231c66a6041e98817ffc944bf6e4c45b2e3
	https://git.kernel.org/stable/c/b2284768c6b32aa224ca7d0ef0741beb434f03aa

Impacted products

Vendor

Product

Version

Version: a2fb4bc4e2a6a031683910d85b278c1d25ae5420
Version: a2fb4bc4e2a6a031683910d85b278c1d25ae5420

Version: 6.17

Show details on NVD website

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "include/linux/virtio_net.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "b625d231c66a6041e98817ffc944bf6e4c45b2e3",
              "status": "affected",
              "version": "a2fb4bc4e2a6a031683910d85b278c1d25ae5420",
              "versionType": "git"
            },
            {
              "lessThan": "b2284768c6b32aa224ca7d0ef0741beb434f03aa",
              "status": "affected",
              "version": "a2fb4bc4e2a6a031683910d85b278c1d25ae5420",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "include/linux/virtio_net.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.17"
            },
            {
              "lessThan": "6.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.6",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvirtio-net: zero unused hash fields\n\nWhen GSO tunnel is negotiated virtio_net_hdr_tnl_from_skb() tries to\ninitialize the tunnel metadata but forget to zero unused rxhash\nfields. This may leak information to another side. Fixing this by\nzeroing the unused hash fields."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-04T15:31:26.497Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/b625d231c66a6041e98817ffc944bf6e4c45b2e3"
        },
        {
          "url": "https://git.kernel.org/stable/c/b2284768c6b32aa224ca7d0ef0741beb434f03aa"
        }
      ],
      "title": "virtio-net: zero unused hash fields",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40236",
    "datePublished": "2025-12-04T15:31:26.497Z",
    "dateReserved": "2025-04-16T07:20:57.180Z",
    "dateUpdated": "2025-12-04T15:31:26.497Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Log in or create an account to share your comment.

Tags

Taxonomy of the tags.

All sightings related to this event Export sightings related to this event

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.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
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.