CVEvulnerability

CVE-2022-49672

5.5 MEDIUM Published 2025-02-26 Modified 2026-08-04 Official page ↗
Status
Modified
Published
2025-02-26
Last modified
2026-08-04
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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.

Affected configurations

• linux linux kernel (>= 4.15 < 4.19.251) • linux linux kernel (>= 4.20 < 5.4.204) • linux linux kernel (>= 5.5 < 5.10.129) • linux linux kernel (>= 5.11 < 5.15.53) • linux linux kernel (>= 5.16 < 5.18.10) • linux linux kernel 5.19

References