PT-2025-8605 · Linux+5 · Linux Kernel+5

Syzbot · Published 2022-06-24 · Updated 2025-11-12 · CVE-2022-49672

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A race condition was found between the tun file and device destruction in the Linux kernel. This issue arises because NAPIs, which are part of the struct tun file, can be destroyed before the netdev, necessitating explicit deletion. The current code fails to delete the NAPI if the queue was detached first.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

ALSA-2025:20518

BDU:2026-03891

CVE-2022-49672

INFSA-2025_20518

RHSA-2025:20518

RHSA-2025_20518

SUSE-SU-2025:1027-1

SUSE-SU-2025:1176-1

SUSE-SU-2025:1183-1

SUSE-SU-2025:1241-1

SUSE-SU-2025:1293-1

SUSE-SU-2025_1027-1

SUSE-SU-2025_1241-1

SUSE-SU-2025_1293-1

Affected Products

Almalinux

Astra Linux

Linux Kernel

Red Hat

Rocky Linux

Suse

References · 1716

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49672.json · Exploit
• https://git.kernel.org/stable/c/a8cf919022373c97a84fe596bbea544f909c485d · Patch
• https://git.kernel.org/stable/c/bec1be0a745ab420718217e3e0d9542a75108989 · Patch
• https://git.kernel.org/stable/c/8661d4b8faa2f7ee7a559969c0a7c57f077b1728 · Patch
• https://security-tracker.debian.org/tracker/CVE-2022-49672 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-49672 · Security Note
• https://ubuntu.com/security/CVE-2022-49672 · Vendor Advisory
• https://git.kernel.org/stable/c/82e729aee59acefe135fceffadcbc5b86dd4f1b9 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:1241-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1027-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-49672 · Security Note
• https://bdu.fstec.ru/vul/2026-03891 · Security Note
• https://osv.dev/vulnerability/CVE-2022-49672 · Vendor Advisory
• https://git.kernel.org/stable/c/8145f77d38de4f88b8a69e1463f5c09ba189d77c · Patch
• https://errata.almalinux.org/9/ALSA-2025-20518.html · Vendor Advisory