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

Vulnerability from cvelistv5 – Published: 2025-02-26 02:24 – Updated: 2026-05-11 19:04
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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  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.