CVE-2022-49410

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-49410
In the Linux kernel, the following vulnerability has been resolved: tracing: Fix potential double free in create_var_ref() In create_var_ref(), init_var_ref() is called to initialize the fields of variable ref_field, which is allocated in the previous function call to create_hist_field(). Function init_var_ref() allocates the corresponding fields such as ref_field->system, but frees these fields when the function encounters an error. The caller later calls destroy_hist_field() to conduct error handling, which frees the fields and the variable itself. This results in double free of the fields which are already freed in the previous function. Fix this by storing NULL to the corresponding fields when they are freed in init_var_ref().

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

References
Link Resource
https://git.kernel.org/stable/c/058cb6d86b9789377216c936506b346aaa1eb581 Patch
https://git.kernel.org/stable/c/37443b3508b8cce6832f8d25cb4550b2f7801f50 Patch
https://git.kernel.org/stable/c/4fdfb15e08598711dbf50daf56a33965232daf0e Patch
https://git.kernel.org/stable/c/99696a2592bca641eb88cc9a80c90e591afebd0f Patch
https://git.kernel.org/stable/c/bd83ff3bbfb003832481c9bff999d12385f396ae Patch
https://git.kernel.org/stable/c/c27f744ceefadc7bbeb14233b6abc150ced617d2 Patch
https://git.kernel.org/stable/c/f8b383f83cb573152c577eca1ef101e89995b72a 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:*:*:*:*:*:*:*:*
History

17 Apr 2025, 20:31

Type Values Removed Values Added
CWE CWE-415
First Time Linux linux Kernel
Linux
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: seguimiento: Se corrige la posible doble liberación en create_var_ref() En create_var_ref(), se llama a init_var_ref() para inicializar los campos de la variable ref_field, que se asigna en la llamada de función anterior a create_hist_field(). La función init_var_ref() asigna los campos correspondientes, como ref_field->system, pero libera estos campos cuando la función encuentra un error. El llamador luego llama a destroy_hist_field() para realizar la gestión de errores, que libera los campos y la variable misma. Esto da como resultado una doble liberación de los campos que ya están liberados en la función anterior. Corrija esto almacenando NULL en los campos correspondientes cuando se liberan en init_var_ref().
References () https://git.kernel.org/stable/c/058cb6d86b9789377216c936506b346aaa1eb581 - () https://git.kernel.org/stable/c/058cb6d86b9789377216c936506b346aaa1eb581 - Patch
References () https://git.kernel.org/stable/c/37443b3508b8cce6832f8d25cb4550b2f7801f50 - () https://git.kernel.org/stable/c/37443b3508b8cce6832f8d25cb4550b2f7801f50 - Patch
References () https://git.kernel.org/stable/c/4fdfb15e08598711dbf50daf56a33965232daf0e - () https://git.kernel.org/stable/c/4fdfb15e08598711dbf50daf56a33965232daf0e - Patch
References () https://git.kernel.org/stable/c/99696a2592bca641eb88cc9a80c90e591afebd0f - () https://git.kernel.org/stable/c/99696a2592bca641eb88cc9a80c90e591afebd0f - Patch
References () https://git.kernel.org/stable/c/bd83ff3bbfb003832481c9bff999d12385f396ae - () https://git.kernel.org/stable/c/bd83ff3bbfb003832481c9bff999d12385f396ae - Patch
References () https://git.kernel.org/stable/c/c27f744ceefadc7bbeb14233b6abc150ced617d2 - () https://git.kernel.org/stable/c/c27f744ceefadc7bbeb14233b6abc150ced617d2 - Patch
References () https://git.kernel.org/stable/c/f8b383f83cb573152c577eca1ef101e89995b72a - () https://git.kernel.org/stable/c/f8b383f83cb573152c577eca1ef101e89995b72a - Patch
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.8
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

26 Feb 2025, 07:01

Type Values Removed Values Added
New CVE
Information

Published : 2025-02-26 07:01

Updated : 2025-04-17 20:31

NVD link : CVE-2022-49410

Mitre link : CVE-2022-49410

CVE.ORG link : CVE-2022-49410

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-415

Double Free