GHSA-F2FG-XHHC-4M4W

Vulnerability from github – Published: 2026-06-24 18:32 – Updated: 2026-09-16 15:30
VLAI
Details

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

ipv6: fix possible UAF in icmpv6_rcv()

Caching saddr and daddr before pskb_pull() is problematic since skb->head can change.

Remove these temporary variables:

  • We only access &ipv6_hdr(skb)->saddr and &ipv6_hdr(skb)->daddr when net_dbg_ratelimited() is called in the slow path.

  • Avoid potential future misuse after pskb_pull() call.

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-2026-53006"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416",
      "CWE-825"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-24T17:17:11Z",
    "severity": "CRITICAL"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: fix possible UAF in icmpv6_rcv()\n\nCaching saddr and daddr before pskb_pull() is problematic\nsince skb-\u003ehead can change.\n\nRemove these temporary variables:\n\n- We only access \u0026ipv6_hdr(skb)-\u003esaddr and \u0026ipv6_hdr(skb)-\u003edaddr\n  when net_dbg_ratelimited() is called in the slow path.\n\n- Avoid potential future misuse after pskb_pull() call.",
  "id": "GHSA-f2fg-xhhc-4m4w",
  "modified": "2026-09-16T15:30:36Z",
  "published": "2026-06-24T18:32:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53006"
    },
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      "type": "WEB",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53006.json"
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      "url": "https://git.kernel.org/stable/c/f996edd7615e686ada141b7f3395025729ff8ccb"
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      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aff0f28f5be803de2452ce702631c021fcd9ce8a"
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      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7c66b368c6ff453f99cb39d84af93e908e51eef2"
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      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7bff2c8fe5c35ae58bf73104f53db3676e6e5d94"
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    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html"
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      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492363"
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    {
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      "url": "https://access.redhat.com/errata/RHSA-2026:47017"
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  ],
  "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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