ghsa-3943-4f4j-gcgj
Vulnerability from github
Published
2025-03-07 21:31
Modified
2025-03-07 21:31
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:

ipv6: Fix signed integer overflow in l2tp_ip6_sendmsg

When len >= INT_MAX - transhdrlen, ulen = len + transhdrlen will be overflow. To fix, we can follow what udpv6 does and subtract the transhdrlen from the max.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49727"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-190"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:01:48Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: Fix signed integer overflow in l2tp_ip6_sendmsg\n\nWhen len \u003e= INT_MAX - transhdrlen, ulen = len + transhdrlen will be\noverflow. To fix, we can follow what udpv6 does and subtract the\ntranshdrlen from the max.",
  "id": "GHSA-3943-4f4j-gcgj",
  "modified": "2025-03-07T21:31:05Z",
  "published": "2025-03-07T21:31:05Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49727"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/034246122f5c5e2e2a0b9fe04e24517920e9beb1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0e818d433fc2718fe4da044ffca7431812a7e04e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/27a37755ceb401111ded76810359d3adc4b268a1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2cf73c7cb6125083408d77f43d0e84d86aed0000"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2f42389d270f2304c8855b0b63498a5a4d0c053d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6c4e3486d21173d60925ef52e512cae727b43d30"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b8879ca1fd7348b4d5db7db86dcb97f60c73d751"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f638a84afef3dfe10554c51820c16e39a278c915"
    }
  ],
  "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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