GHSA-4J34-532J-F693

Vulnerability from github – Published: 2026-07-19 18:31 – Updated: 2026-07-20 15:31
VLAI
Details

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

ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo()

ipv6_hop_jumbo() calls pskb_trim_rcsum(), which can change skb pointers. Let's recompute nh pointer to make sure any change won't mess things up.

Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2026-63924"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-19T16:17:10Z",
    "severity": "CRITICAL"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo()\n\nipv6_hop_jumbo() calls pskb_trim_rcsum(), which can change skb pointers.\nLet\u0027s recompute nh pointer to make sure any change won\u0027t mess things up.",
  "id": "GHSA-4j34-532j-f693",
  "modified": "2026-07-20T15:31:52Z",
  "published": "2026-07-19T18:31:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63924"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2b56bbd928c030894c270cd33d60286326919458"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/645b99b1a185c91a79bdac4c5de0f91b212d64f0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/72af7beae774e46ed543f3f2f267bf0a141bfcdd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9e883eaa878f4337b5873c706efb5a192364ed18"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b3ac54e5c905f86d22b502eacb5686a282c5659f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bddaa4dfc7f36e1ee343a0622f69288af2b9ace9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c512e1c819dfbf6ae95ee7a44b65b9ad98979157"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d47548a36639095939f4747d4c43f2271366f565"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}



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