ghsa-rfj2-m755-7qfc
Vulnerability from github
Published
2025-03-27 18:31
Modified
2025-10-31 21:30
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

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

netfilter: nft_payload: incorrect arithmetics when fetching VLAN header bits

If the offset + length goes over the ethernet + vlan header, then the length is adjusted to copy the bytes that are within the boundaries of the vlan_ethhdr scratchpad area. The remaining bytes beyond ethernet + vlan header are copied directly from the skbuff data area.

Fix incorrect arithmetic operator: subtract, not add, the size of the vlan header in case of double-tagged packets to adjust the length accordingly to address CVE-2023-0179.

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2023-53033"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-03-27T17:15:53Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nft_payload: incorrect arithmetics when fetching VLAN header bits\n\nIf the offset + length goes over the ethernet + vlan header, then the\nlength is adjusted to copy the bytes that are within the boundaries of\nthe vlan_ethhdr scratchpad area. The remaining bytes beyond ethernet +\nvlan header are copied directly from the skbuff data area.\n\nFix incorrect arithmetic operator: subtract, not add, the size of the\nvlan header in case of double-tagged packets to adjust the length\naccordingly to address CVE-2023-0179.",
  "id": "GHSA-rfj2-m755-7qfc",
  "modified": "2025-10-31T21:30:52Z",
  "published": "2025-03-27T18:31:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53033"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/550efeff989b041f3746118c0ddd863c39ddc1aa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/696e1a48b1a1b01edad542a1ef293665864a4dd0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/76ef74d4a379faa451003621a84e3498044e7aa3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a8acfe2c6fb99f9375a9325807a179cd8c32e6e3"
    }
  ],
  "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"
    }
  ]
}


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