CVE-2021-47645

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-47645
In the Linux kernel, the following vulnerability has been resolved: media: staging: media: zoran: calculate the right buffer number for zoran_reap_stat_com On the case tmp_dcim=1, the index of buffer is miscalculated. This generate a NULL pointer dereference later. So let's fix the calcul and add a check to prevent this to reappear.

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/20811bbe685ca3eddd34b0c750860427d7030910 Patch
https://git.kernel.org/stable/c/20db2ed1e2f9fcd417fa67853e5154f0c2537d6c Patch
https://git.kernel.org/stable/c/7e76f3ed7ab2ae026c6ef9cc23096a7554af8c52 Patch
https://git.kernel.org/stable/c/8dce4b265a5357731058f69645840dabc718c687
https://git.kernel.org/stable/c/bafec1a6ba4b187a7fcdcfce0faebdc623d4ef8e Patch
https://git.kernel.org/stable/c/e3b86f4e558cea9eed71d894df2f19b10d60a207 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:*:*:*:*:*:*:*:*
History

29 Sep 2025, 12:15

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/8dce4b265a5357731058f69645840dabc718c687 -

18 Mar 2025, 19:09

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/20811bbe685ca3eddd34b0c750860427d7030910 - () https://git.kernel.org/stable/c/20811bbe685ca3eddd34b0c750860427d7030910 - Patch
References () https://git.kernel.org/stable/c/20db2ed1e2f9fcd417fa67853e5154f0c2537d6c - () https://git.kernel.org/stable/c/20db2ed1e2f9fcd417fa67853e5154f0c2537d6c - Patch
References () https://git.kernel.org/stable/c/7e76f3ed7ab2ae026c6ef9cc23096a7554af8c52 - () https://git.kernel.org/stable/c/7e76f3ed7ab2ae026c6ef9cc23096a7554af8c52 - Patch
References () https://git.kernel.org/stable/c/bafec1a6ba4b187a7fcdcfce0faebdc623d4ef8e - () https://git.kernel.org/stable/c/bafec1a6ba4b187a7fcdcfce0faebdc623d4ef8e - Patch
References () https://git.kernel.org/stable/c/e3b86f4e558cea9eed71d894df2f19b10d60a207 - () https://git.kernel.org/stable/c/e3b86f4e558cea9eed71d894df2f19b10d60a207 - Patch
First Time Linux
Linux linux Kernel
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CWE CWE-476
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: media: staging: media: zoran: calcula el número de búfer correcto para zoran_reap_stat_com En el caso tmp_dcim=1, el índice del búfer se calcula mal. Esto genera una desreferencia de puntero NULL más adelante. Por lo tanto, arreglemos el cálculo y agreguemos una verificación para evitar que esto vuelva a aparecer.

26 Feb 2025, 06:37

Type Values Removed Values Added
New CVE
Information

Published : 2025-02-26 06:37

Updated : 2025-10-01 20:15

NVD link : CVE-2021-47645

Mitre link : CVE-2021-47645

CVE.ORG link : CVE-2021-47645

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-476

NULL Pointer Dereference