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.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

No data.

No data.

No data.

References
Link Providers
https://git.kernel.org/stable/c/3b9bc84d311104906d2b4995a9a02d7b7ddab2db cve-icon cve-icon
https://git.kernel.org/stable/c/8145f77d38de4f88b8a69e1463f5c09ba189d77c cve-icon cve-icon
https://git.kernel.org/stable/c/82e729aee59acefe135fceffadcbc5b86dd4f1b9 cve-icon cve-icon
https://git.kernel.org/stable/c/8661d4b8faa2f7ee7a559969c0a7c57f077b1728 cve-icon cve-icon
https://git.kernel.org/stable/c/a8cf919022373c97a84fe596bbea544f909c485d cve-icon cve-icon
https://git.kernel.org/stable/c/bec1be0a745ab420718217e3e0d9542a75108989 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025022624-CVE-2022-49672-e5ec@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2022-49672 cve-icon
https://www.cve.org/CVERecord?id=CVE-2022-49672 cve-icon
History

Mon, 28 Apr 2025 16:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-362
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

 cvssV3_1

{'score': 4.7, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H'}

Thu, 27 Feb 2025 01:45:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate

Wed, 26 Feb 2025 02:45:00 +0000

Type Values Removed Values Added
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.
Title net: tun: unlink NAPI from device on destruction
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-02-26T02:24:05.284Z

Updated: 2025-05-04T08:43:01.207Z

Reserved: 2025-02-26T02:21:30.437Z

Link: CVE-2022-49672

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2025-02-26T07:01:42.130

Modified: 2025-02-26T07:01:42.130

Link: CVE-2022-49672

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-02-26T00:00:00Z

Links: CVE-2022-49672 - Bugzilla