CVE-2022-49672

MEDIUM EPSS 18.3%
Published Feb 26, 20251y ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Feb 26, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

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 Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
18.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 9

VendorProductVersionRange
linuxlinux_kernel*≥4.15  –  <4.19.251
linuxlinux_kernel*≥4.20  –  <5.4.204
linuxlinux_kernel*≥5.5  –  <5.10.129
linuxlinux_kernel*≥5.11  –  <5.15.53
linuxlinux_kernel*≥5.16  –  <5.18.10
linuxlinux_kernel5.19any
linuxlinux_kernel5.19any
linuxlinux_kernel5.19any
linuxlinux_kernel5.19any

References 6

  • git.kernel.org https://git.kernel.org/stable/c/3b9bc84d311104906d2b4995a9a02d7b7ddab2db
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8145f77d38de4f88b8a69e1463f5c09ba189d77c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/82e729aee59acefe135fceffadcbc5b86dd4f1b9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8661d4b8faa2f7ee7a559969c0a7c57f077b1728
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a8cf919022373c97a84fe596bbea544f909c485d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bec1be0a745ab420718217e3e0d9542a75108989
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/3b9bc84d311104906d2b4995a9a02d7b7ddab2db
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8145f77d38de4f88b8a69e1463f5c09ba189d77c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/82e729aee59acefe135fceffadcbc5b86dd4f1b9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8661d4b8faa2f7ee7a559969c0a7c57f077b1728
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a8cf919022373c97a84fe596bbea544f909c485d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bec1be0a745ab420718217e3e0d9542a75108989
    Patch