CVE-2022-49672

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-49672
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.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

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

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc4:*:*:*:*:*:*
History

24 Oct 2025, 15:52

Type Values Removed Values Added
CPE cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: tun: unlink NAPI from device on destruction Syzbot encontró una ejecución entre el archivo tun y la destrucción del dispositivo. Las NAPI se encuentran en struct tun_file, que puede destruirse antes que netdev, por lo que debemos eliminarlas explícitamente. Falta el código actual que elimina la NAPI si la cola se separó primero.
CWE NVD-CWE-noinfo
References () https://git.kernel.org/stable/c/3b9bc84d311104906d2b4995a9a02d7b7ddab2db - () https://git.kernel.org/stable/c/3b9bc84d311104906d2b4995a9a02d7b7ddab2db - Patch
References () https://git.kernel.org/stable/c/8145f77d38de4f88b8a69e1463f5c09ba189d77c - () https://git.kernel.org/stable/c/8145f77d38de4f88b8a69e1463f5c09ba189d77c - Patch
References () https://git.kernel.org/stable/c/82e729aee59acefe135fceffadcbc5b86dd4f1b9 - () https://git.kernel.org/stable/c/82e729aee59acefe135fceffadcbc5b86dd4f1b9 - Patch
References () https://git.kernel.org/stable/c/8661d4b8faa2f7ee7a559969c0a7c57f077b1728 - () https://git.kernel.org/stable/c/8661d4b8faa2f7ee7a559969c0a7c57f077b1728 - Patch
References () https://git.kernel.org/stable/c/a8cf919022373c97a84fe596bbea544f909c485d - () https://git.kernel.org/stable/c/a8cf919022373c97a84fe596bbea544f909c485d - Patch
References () https://git.kernel.org/stable/c/bec1be0a745ab420718217e3e0d9542a75108989 - () https://git.kernel.org/stable/c/bec1be0a745ab420718217e3e0d9542a75108989 - Patch
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
First Time Linux
Linux linux Kernel

26 Feb 2025, 07:01

Type Values Removed Values Added
New CVE
Information

Published : 2025-02-26 07:01

Updated : 2025-10-24 15:52

NVD link : CVE-2022-49672

Mitre link : CVE-2022-49672

CVE.ORG link : CVE-2022-49672

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo