CVE-2022-49672 (GCVE-0-2022-49672)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:24 – Updated: 2025-05-04 08:43
VLAI?
Title
net: tun: unlink NAPI from device on destruction
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 943170998b200190f99d3fe7e771437e2c51f319 , < 82e729aee59acefe135fceffadcbc5b86dd4f1b9 (git)
Affected: 943170998b200190f99d3fe7e771437e2c51f319 , < a8cf919022373c97a84fe596bbea544f909c485d (git)
Affected: 943170998b200190f99d3fe7e771437e2c51f319 , < bec1be0a745ab420718217e3e0d9542a75108989 (git)
Affected: 943170998b200190f99d3fe7e771437e2c51f319 , < 8145f77d38de4f88b8a69e1463f5c09ba189d77c (git)
Affected: 943170998b200190f99d3fe7e771437e2c51f319 , < 8661d4b8faa2f7ee7a559969c0a7c57f077b1728 (git)
Affected: 943170998b200190f99d3fe7e771437e2c51f319 , < 3b9bc84d311104906d2b4995a9a02d7b7ddab2db (git)
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    Linux Linux Affected: 4.15
Unaffected: 0 , < 4.15 (semver)
Unaffected: 4.19.251 , ≤ 4.19.* (semver)
Unaffected: 5.4.204 , ≤ 5.4.* (semver)
Unaffected: 5.10.129 , ≤ 5.10.* (semver)
Unaffected: 5.15.53 , ≤ 5.15.* (semver)
Unaffected: 5.18.10 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
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{
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          "programFiles": [
            "drivers/net/tun.c"
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      ],
      "cpeApplicability": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:43:01.207Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
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          "url": "https://git.kernel.org/stable/c/bec1be0a745ab420718217e3e0d9542a75108989"
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        {
          "url": "https://git.kernel.org/stable/c/3b9bc84d311104906d2b4995a9a02d7b7ddab2db"
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      ],
      "title": "net: tun: unlink NAPI from device on destruction",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49672",
    "datePublished": "2025-02-26T02:24:05.284Z",
    "dateReserved": "2025-02-26T02:21:30.437Z",
    "dateUpdated": "2025-05-04T08:43:01.207Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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