CVE-2022-49187

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-49187
In the Linux kernel, the following vulnerability has been resolved: clk: Fix clk_hw_get_clk() when dev is NULL Any registered clk_core structure can have a NULL pointer in its dev field. While never actually documented, this is evidenced by the wide usage of clk_register and clk_hw_register with a NULL device pointer, and the fact that the core of_clk_hw_register() function also passes a NULL device pointer. A call to clk_hw_get_clk() on a clk_hw struct whose clk_core is in that case will result in a NULL pointer derefence when it calls dev_name() on that NULL device pointer. Add a test for this case and use NULL as the dev_id if the device pointer is NULL.

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/0c1b56df451716ba207bbf59f303473643eee4fd Patch
https://git.kernel.org/stable/c/23f89fe005b105f0dcc55034c13eb89f9b570fac Patch
https://git.kernel.org/stable/c/4be3e4c05d8dd1b83b75652cad88c9e752ec7054 Patch
https://git.kernel.org/stable/c/d183f20cf5a7b546d4108e796b98210ceb317579 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:*:*:*:*:*:*:*:*
History

14 Mar 2025, 20:57

Type Values Removed Values Added
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
First Time Linux linux Kernel
Linux
References () https://git.kernel.org/stable/c/0c1b56df451716ba207bbf59f303473643eee4fd - () https://git.kernel.org/stable/c/0c1b56df451716ba207bbf59f303473643eee4fd - Patch
References () https://git.kernel.org/stable/c/23f89fe005b105f0dcc55034c13eb89f9b570fac - () https://git.kernel.org/stable/c/23f89fe005b105f0dcc55034c13eb89f9b570fac - Patch
References () https://git.kernel.org/stable/c/4be3e4c05d8dd1b83b75652cad88c9e752ec7054 - () https://git.kernel.org/stable/c/4be3e4c05d8dd1b83b75652cad88c9e752ec7054 - Patch
References () https://git.kernel.org/stable/c/d183f20cf5a7b546d4108e796b98210ceb317579 - () https://git.kernel.org/stable/c/d183f20cf5a7b546d4108e796b98210ceb317579 - Patch
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: clk: Arreglar clk_hw_get_clk() cuando dev es NULL Cualquier estructura clk_core registrada puede tener un puntero NULL en su campo dev. Si bien nunca se documentó realmente, esto se evidencia por el amplio uso de clk_register y clk_hw_register con un puntero de dispositivo NULL, y el hecho de que la función principal of_clk_hw_register() también pasa un puntero de dispositivo NULL. Una llamada a clk_hw_get_clk() en una estructura clk_hw cuyo clk_core está en ese caso dará como resultado una desreferencia de puntero NULL cuando llame a dev_name() en ese puntero de dispositivo NULL. Agregue una prueba para este caso y use NULL como dev_id si el puntero del dispositivo es NULL.
CWE CWE-476
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5

26 Feb 2025, 07:00

Type Values Removed Values Added
New CVE
Information

Published : 2025-02-26 07:00

Updated : 2025-03-14 20:57

NVD link : CVE-2022-49187

Mitre link : CVE-2022-49187

CVE.ORG link : CVE-2022-49187

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-476

NULL Pointer Dereference