CVE-2021-47207

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-47207
In the Linux kernel, the following vulnerability has been resolved: ALSA: gus: fix null pointer dereference on pointer block The pointer block return from snd_gf1_dma_next_block could be null, so there is a potential null pointer dereference issue. Fix this by adding a null check before dereference.

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/16721797dcef2c7c030ffe73a07f39a65f9323c3 Patch
https://git.kernel.org/stable/c/1ac6cd87d8ddd36c43620f82c4d65b058f725f0f Patch
https://git.kernel.org/stable/c/3e28e083dcdf03a18a083f8a47b6bb6b1604b5be Patch
https://git.kernel.org/stable/c/542fa721594a02d2aee0370a764d306ef48d030c Patch
https://git.kernel.org/stable/c/a0d21bb3279476c777434c40d969ea88ca64f9aa Patch
https://git.kernel.org/stable/c/ab4c1ebc40f699f48346f634d7b72b9c5193f315 Patch
https://git.kernel.org/stable/c/c6d2cefdd05c4810c416fb8d384b5c377bd977bc Patch
https://git.kernel.org/stable/c/cb09c760c201f82df83babc92a5ffea0a01807fc Patch
https://git.kernel.org/stable/c/16721797dcef2c7c030ffe73a07f39a65f9323c3 Patch
https://git.kernel.org/stable/c/1ac6cd87d8ddd36c43620f82c4d65b058f725f0f Patch
https://git.kernel.org/stable/c/3e28e083dcdf03a18a083f8a47b6bb6b1604b5be Patch
https://git.kernel.org/stable/c/542fa721594a02d2aee0370a764d306ef48d030c Patch
https://git.kernel.org/stable/c/a0d21bb3279476c777434c40d969ea88ca64f9aa Patch
https://git.kernel.org/stable/c/ab4c1ebc40f699f48346f634d7b72b9c5193f315 Patch
https://git.kernel.org/stable/c/c6d2cefdd05c4810c416fb8d384b5c377bd977bc Patch
https://git.kernel.org/stable/c/cb09c760c201f82df83babc92a5ffea0a01807fc 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:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

13 Jan 2025, 20:42

Type Values Removed Values Added
First Time Linux linux Kernel
Linux
CWE CWE-476
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
References () https://git.kernel.org/stable/c/16721797dcef2c7c030ffe73a07f39a65f9323c3 - () https://git.kernel.org/stable/c/16721797dcef2c7c030ffe73a07f39a65f9323c3 - Patch
References () https://git.kernel.org/stable/c/1ac6cd87d8ddd36c43620f82c4d65b058f725f0f - () https://git.kernel.org/stable/c/1ac6cd87d8ddd36c43620f82c4d65b058f725f0f - Patch
References () https://git.kernel.org/stable/c/3e28e083dcdf03a18a083f8a47b6bb6b1604b5be - () https://git.kernel.org/stable/c/3e28e083dcdf03a18a083f8a47b6bb6b1604b5be - Patch
References () https://git.kernel.org/stable/c/542fa721594a02d2aee0370a764d306ef48d030c - () https://git.kernel.org/stable/c/542fa721594a02d2aee0370a764d306ef48d030c - Patch
References () https://git.kernel.org/stable/c/a0d21bb3279476c777434c40d969ea88ca64f9aa - () https://git.kernel.org/stable/c/a0d21bb3279476c777434c40d969ea88ca64f9aa - Patch
References () https://git.kernel.org/stable/c/ab4c1ebc40f699f48346f634d7b72b9c5193f315 - () https://git.kernel.org/stable/c/ab4c1ebc40f699f48346f634d7b72b9c5193f315 - Patch
References () https://git.kernel.org/stable/c/c6d2cefdd05c4810c416fb8d384b5c377bd977bc - () https://git.kernel.org/stable/c/c6d2cefdd05c4810c416fb8d384b5c377bd977bc - Patch
References () https://git.kernel.org/stable/c/cb09c760c201f82df83babc92a5ffea0a01807fc - () https://git.kernel.org/stable/c/cb09c760c201f82df83babc92a5ffea0a01807fc - Patch

21 Nov 2024, 06:35

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ALSA: gus: corrige la desreferencia de puntero nulo en el bloque de puntero El bloque de puntero devuelto por snd_gf1_dma_next_block podría ser nulo, por lo que existe un posible problema de desreferencia de puntero nulo. Solucione esto agregando una verificación nula antes de la desreferencia.
References () https://git.kernel.org/stable/c/16721797dcef2c7c030ffe73a07f39a65f9323c3 - () https://git.kernel.org/stable/c/16721797dcef2c7c030ffe73a07f39a65f9323c3 -
References () https://git.kernel.org/stable/c/1ac6cd87d8ddd36c43620f82c4d65b058f725f0f - () https://git.kernel.org/stable/c/1ac6cd87d8ddd36c43620f82c4d65b058f725f0f -
References () https://git.kernel.org/stable/c/3e28e083dcdf03a18a083f8a47b6bb6b1604b5be - () https://git.kernel.org/stable/c/3e28e083dcdf03a18a083f8a47b6bb6b1604b5be -
References () https://git.kernel.org/stable/c/542fa721594a02d2aee0370a764d306ef48d030c - () https://git.kernel.org/stable/c/542fa721594a02d2aee0370a764d306ef48d030c -
References () https://git.kernel.org/stable/c/a0d21bb3279476c777434c40d969ea88ca64f9aa - () https://git.kernel.org/stable/c/a0d21bb3279476c777434c40d969ea88ca64f9aa -
References () https://git.kernel.org/stable/c/ab4c1ebc40f699f48346f634d7b72b9c5193f315 - () https://git.kernel.org/stable/c/ab4c1ebc40f699f48346f634d7b72b9c5193f315 -
References () https://git.kernel.org/stable/c/c6d2cefdd05c4810c416fb8d384b5c377bd977bc - () https://git.kernel.org/stable/c/c6d2cefdd05c4810c416fb8d384b5c377bd977bc -
References () https://git.kernel.org/stable/c/cb09c760c201f82df83babc92a5ffea0a01807fc - () https://git.kernel.org/stable/c/cb09c760c201f82df83babc92a5ffea0a01807fc -

10 Apr 2024, 19:49

Type Values Removed Values Added
New CVE
Information

Published : 2024-04-10 19:15

Updated : 2025-01-13 20:42

NVD link : CVE-2021-47207

Mitre link : CVE-2021-47207

CVE.ORG link : CVE-2021-47207

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-476

NULL Pointer Dereference