ghsa-g69g-p5jr-h7qf
Vulnerability from github
Published
2025-10-24 18:30
Modified
2025-10-24 18:30
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:

net: tun: unlink NAPI from device on destruction

Syzbot found a race between tun file and device destruction. NAPIs live in struct tun_file which can get destroyed before the netdev so we have to del them explicitly. The current code is missing deleting the NAPI if the queue was detached first.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49672"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:01:42Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: tun: unlink NAPI from device on destruction\n\nSyzbot found a race between tun file and device destruction.\nNAPIs live in struct tun_file which can get destroyed before\nthe netdev so we have to del them explicitly. The current\ncode is missing deleting the NAPI if the queue was detached\nfirst.",
  "id": "GHSA-g69g-p5jr-h7qf",
  "modified": "2025-10-24T18:30:56Z",
  "published": "2025-10-24T18:30:56Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49672"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3b9bc84d311104906d2b4995a9a02d7b7ddab2db"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8145f77d38de4f88b8a69e1463f5c09ba189d77c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/82e729aee59acefe135fceffadcbc5b86dd4f1b9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8661d4b8faa2f7ee7a559969c0a7c57f077b1728"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a8cf919022373c97a84fe596bbea544f909c485d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bec1be0a745ab420718217e3e0d9542a75108989"
    }
  ],
  "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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