7.8

CVE-2022-49672: net: tun: unlink NAPI from device on destruction

Modified
AliasesUBUNTU-CVE-2022-49672DEBIAN-CVE-2022-49672
Published 26-02-2025Last modified 05-08-2026

Vulnerability summary

CVE-2022-49672 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.30% chance of exploitation in the next 30 days, higher than 22.7% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.30%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 6 · Related 5
RHSA-2025:20518SUSE-SU-2025:1027-1SUSE-SU-2025:1176-1SUSE-SU-2025:1183-1SUSE-SU-2025:1241-1SUSE-SU-2025:1293-1

Timeline

  1. 26-02-2025
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.30%

Chance of exploitation in the next 30 days

Percentile

23%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.30% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu110 products
  • linux< 4.15.0-194.205 | < 5.4.0-128.144 | < 5.15.0-48.54
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.15.0-1142.154 | < 5.4.0-1086.93 | < 5.15.0-1020.24
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 943170998b200190f99d3fe7e771437e2c51f319, < 82e729aee59acefe135fceffadcbc5b86dd4f1b9 | ≥ 943170998b200190f99d3fe7e771437e2c51f319, < a8cf919022373c97a84fe596bbea544f909c485d | ≥ 943170998b200190f99d3fe7e771437e2c51f319, < bec1be0a745ab420718217e3e0d9542a75108989 | ≥ 943170998b200190f99d3fe7e771437e2c51f319, < 8145f77d38de4f88b8a69e1463f5c09ba189d77c | ≥ 943170998b200190f99d3fe7e771437e2c51f319, < 8661d4b8faa2f7ee7a559969c0a7c57f077b1728 | ≥ 943170998b200190f99d3fe7e771437e2c51f319, < 3b9bc84d311104906d2b4995a9a02d7b7ddab2db | 4.15
  • linux_kernel≥ 4.15, < 4.19.251 | ≥ 4.20, < 5.4.204 | ≥ 5.5, < 5.10.129 | ≥ 5.11, < 5.15.53 | ≥ 5.16, < 5.18.10 | 5.19:rc1 | 5.19:rc2 | 5.19:rc3 | 5.19:rc4
Debian1 product
  • linux< 5.18.14-1

3 vendors · 113 products

References

10 links