CVE-2021-47596

  1. Yack CVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-47596

7.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

I

n the Linux kernel, the following vulnerability has been resolved: net: hns3: fix use-after-free bug in hclgevf_send_mbx_msg Currently, the hns3_remove function firstly uninstall client instance, and then uninstall acceletion engine device. The netdevice is freed in client instance uninstall process, but acceletion engine device uninstall process still use it to trace runtime information. This causes a use after free problem. So fixes it by check the instance register state to avoid use after free.

References
Link Resource
https://git.kernel.org/stable/c/12512bc8f25b8ba9795dfbae0e9ca57ff13fd542 Patch
https://git.kernel.org/stable/c/27cbf64a766e86f068ce6214f04c00ceb4db1af4 Patch
https://git.kernel.org/stable/c/4f4a353f6fe033807cd026a5de81c67469ff19b0 Patch
https://git.kernel.org/stable/c/12512bc8f25b8ba9795dfbae0e9ca57ff13fd542 Patch
https://git.kernel.org/stable/c/27cbf64a766e86f068ce6214f04c00ceb4db1af4 Patch
https://git.kernel.org/stable/c/4f4a353f6fe033807cd026a5de81c67469ff19b0 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

21 Nov 2024, 06:36

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/12512bc8f25b8ba9795dfbae0e9ca57ff13fd542 - Patch () https://git.kernel.org/stable/c/12512bc8f25b8ba9795dfbae0e9ca57ff13fd542 - Patch
References () https://git.kernel.org/stable/c/27cbf64a766e86f068ce6214f04c00ceb4db1af4 - Patch () https://git.kernel.org/stable/c/27cbf64a766e86f068ce6214f04c00ceb4db1af4 - Patch
References () https://git.kernel.org/stable/c/4f4a353f6fe033807cd026a5de81c67469ff19b0 - Patch () https://git.kernel.org/stable/c/4f4a353f6fe033807cd026a5de81c67469ff19b0 - Patch

19 Aug 2024, 18:22

Type Values Removed Values Added
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.8
CWE CWE-416
References () https://git.kernel.org/stable/c/12512bc8f25b8ba9795dfbae0e9ca57ff13fd542 - () https://git.kernel.org/stable/c/12512bc8f25b8ba9795dfbae0e9ca57ff13fd542 - Patch
References () https://git.kernel.org/stable/c/27cbf64a766e86f068ce6214f04c00ceb4db1af4 - () https://git.kernel.org/stable/c/27cbf64a766e86f068ce6214f04c00ceb4db1af4 - Patch
References () https://git.kernel.org/stable/c/4f4a353f6fe033807cd026a5de81c67469ff19b0 - () https://git.kernel.org/stable/c/4f4a353f6fe033807cd026a5de81c67469ff19b0 - Patch
First Time Linux linux Kernel
Linux

20 Jun 2024, 12:43

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se resolvió la siguiente vulnerabilidad: net: hns3: corrige el error de use-after-free en hclgevf_send_mbx_msg Actualmente, la función hns3_remove desinstala primero la instancia del cliente y luego desinstala el dispositivo del motor de aceleración. El dispositivo de red se libera en el proceso de desinstalación de la instancia del cliente, pero el proceso de desinstalación del dispositivo del motor de aceleración aún lo utiliza para rastrear la información del tiempo de ejecución. Esto provoca un problema de use-after-free. Entonces lo soluciona verificando el estado del registro de la instancia para evitar use after free.

19 Jun 2024, 15:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-06-19 15:15

Updated : 2024-11-21 06:36

NVD link : CVE-2021-47596

Mitre link : CVE-2021-47596

CVE.ORG link : CVE-2021-47596

JSON object : View

Products Affected

linux

CWE
CWE-416

Use After Free