Riskcovery

CVE-2022-49672

net: tun: unlink NAPI from device on destruction

State
Published
Severity
7.8 High
Published
Feb 26, 2025
Updated
Aug 5, 2026
Reserved
Feb 26, 2025

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 943170998b200190f99d3fe7e771437e2c51f319 to before 82e729aee59acefe135fceffadcbc5b86dd4f1b9Affected
  • 943170998b200190f99d3fe7e771437e2c51f319 to before a8cf919022373c97a84fe596bbea544f909c485dAffected
  • 943170998b200190f99d3fe7e771437e2c51f319 to before bec1be0a745ab420718217e3e0d9542a75108989Affected
  • 943170998b200190f99d3fe7e771437e2c51f319 to before 8145f77d38de4f88b8a69e1463f5c09ba189d77cAffected
  • 943170998b200190f99d3fe7e771437e2c51f319 to before 8661d4b8faa2f7ee7a559969c0a7c57f077b1728Affected
  • 943170998b200190f99d3fe7e771437e2c51f319 to before 3b9bc84d311104906d2b4995a9a02d7b7ddab2dbAffected
LinuxLinux
  • 4.15Affected
  • before 4.15Not affected
  • 4.19.251 through 4.19.*Not affected
  • 5.4.204 through 5.4.*Not affected
  • 5.10.129 through 5.10.*Not affected
  • 5.15.53 through 5.15.*Not affected
  • 5.18.10 through 5.18.*Not affected
  • 5.19 and laterNot affected

References

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