CVE-2022-49672net: tun: unlink NAPI from device on destruction
- 7.8HighCVSS base score
- 0.30%Exploitation in 30 daysEPSS · top 77% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
Published
- 18 months later
· 18 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.30% · top 77% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 943170998b200190f99d3fe7e771437e2c51f319 – < 82e729aee59acefe135fceffadcbc5b86dd4f1b9
- affected 943170998b200190f99d3fe7e771437e2c51f319 – < a8cf919022373c97a84fe596bbea544f909c485d
- affected 943170998b200190f99d3fe7e771437e2c51f319 – < bec1be0a745ab420718217e3e0d9542a75108989
- affected 943170998b200190f99d3fe7e771437e2c51f319 – < 8145f77d38de4f88b8a69e1463f5c09ba189d77c
- affected 943170998b200190f99d3fe7e771437e2c51f319 – < 8661d4b8faa2f7ee7a559969c0a7c57f077b1728
- affected 943170998b200190f99d3fe7e771437e2c51f319 – < 3b9bc84d311104906d2b4995a9a02d7b7ddab2db
- affected 4.15
- unaffected < 4.15
- unaffected 4.19.251 – ≤ 4.19.*
- unaffected 5.4.204 – ≤ 5.4.*
- unaffected 5.10.129 – ≤ 5.10.*
- unaffected 5.15.53 – ≤ 5.15.*
- unaffected 5.18.10 – ≤ 5.18.*
- unaffected 5.19 – ≤ *
References
References6
- https://git.kernel.org/stable/c/82e729aee59acefe135fceffadcbc5b86dd4f1b9 (opens in a new tab)
- https://git.kernel.org/stable/c/a8cf919022373c97a84fe596bbea544f909c485d (opens in a new tab)
- https://git.kernel.org/stable/c/bec1be0a745ab420718217e3e0d9542a75108989 (opens in a new tab)
- https://git.kernel.org/stable/c/8145f77d38de4f88b8a69e1463f5c09ba189d77c (opens in a new tab)
- https://git.kernel.org/stable/c/8661d4b8faa2f7ee7a559969c0a7c57f077b1728 (opens in a new tab)
- https://git.kernel.org/stable/c/3b9bc84d311104906d2b4995a9a02d7b7ddab2db (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2022-54561 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2022-49672)Record last updated .