GHSA-XQ44-Q9X4-CXW9

Vulnerability from github – Published: 2026-08-28 09:31 – Updated: 2026-08-29 09:30
VLAI
Details

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

batman-adv: gw: acquire ethernet header only after skb realloc

The pskb_may_pull() called by batadv_get_vid() could reallocate the buffer behind the skb. Variables which were pointing to the old buffer need to be reassigned to avoid an use-after-free.

Severity
8.8 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2026-80601"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-28T08:16:43Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: gw: acquire ethernet header only after skb realloc\n\nThe pskb_may_pull() called by batadv_get_vid() could reallocate the buffer\nbehind the skb. Variables which were pointing to the old buffer need to be\nreassigned to avoid an use-after-free.",
  "id": "GHSA-xq44-q9x4-cxw9",
  "modified": "2026-08-29T09:30:25Z",
  "published": "2026-08-28T09:31:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80601"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2760b38222c8828b075802342fe3b91eb823d542"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6c37f1166549c999ccd164b0cb6462d1ae68f8f6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/77880a3be88d378d60cc1e8f8ec70430e2ed0518"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/916dac5f2944f63f07f7b501acbea6737dbbed0e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/afac8096bde4948e3caa7e4dd733867cfbd3018e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b79884a5567bf788fb76c30832467cf6a56f3c0d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e3f4325e35dd6e76b80665f3510738ce34819753"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e6b43acd34b219b807e65096ce207b087942779d"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}



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