CVE-2022-49312

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-49312
In the Linux kernel, the following vulnerability has been resolved: staging: rtl8712: fix a potential memory leak in r871xu_drv_init() In r871xu_drv_init(), if r8712_init_drv_sw() fails, then the memory allocated by r8712_alloc_io_queue() in r8712_usb_dvobj_init() is not properly released as there is no action will be performed by r8712_usb_dvobj_deinit(). To properly release it, we should call r8712_free_io_queue() in r8712_usb_dvobj_deinit(). Besides, in r871xu_dev_remove(), r8712_usb_dvobj_deinit() will be called by r871x_dev_unload() under condition `padapter->bup` and r8712_free_io_queue() is called by r8712_free_drv_sw(). However, r8712_usb_dvobj_deinit() does not rely on `padapter->bup` and calling r8712_free_io_queue() in r8712_free_drv_sw() is negative for better understading the code. So I move r8712_usb_dvobj_deinit() into r871xu_dev_remove(), and remove r8712_free_io_queue() from r8712_free_drv_sw().

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/205e039fead72e87ad2838f5e649a4c4834f648b Patch
https://git.kernel.org/stable/c/5a89a92efc342dd7c44b6056da87debc598f9c73 Patch
https://git.kernel.org/stable/c/7288ff561de650d4139fab80e9cb0da9b5b32434 Patch
https://git.kernel.org/stable/c/8eb42d6d10f8fe509117859defddf9e72b4fa4d0 Patch
https://git.kernel.org/stable/c/a2882b8baad068d21c99fb2ab5a85a2bdbd5b834 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

17 Mar 2025, 19:54

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: staging: rtl8712: corrige una posible pérdida de memoria en r871xu_drv_init() En r871xu_drv_init(), si r8712_init_drv_sw() falla, entonces la memoria asignada por r8712_alloc_io_queue() en r8712_usb_dvobj_init() no se libera correctamente ya que r8712_usb_dvobj_deinit() no realizará ninguna acción. Para liberarla correctamente, debemos llamar a r8712_free_io_queue() en r8712_usb_dvobj_deinit(). Además, en r871xu_dev_remove(), r8712_usb_dvobj_deinit() será llamado por r871x_dev_unload() bajo la condición `padapter->bup` y r8712_free_io_queue() será llamado por r8712_free_drv_sw(). Sin embargo, r8712_usb_dvobj_deinit() no depende de `padapter->bup` y llamar a r8712_free_io_queue() en r8712_free_drv_sw() es negativo para una mejor comprensión del código. Entonces muevo r8712_usb_dvobj_deinit() a r871xu_dev_remove() y elimino r8712_free_io_queue() de r8712_free_drv_sw().
CWE CWE-401
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
References () https://git.kernel.org/stable/c/205e039fead72e87ad2838f5e649a4c4834f648b - () https://git.kernel.org/stable/c/205e039fead72e87ad2838f5e649a4c4834f648b - Patch
References () https://git.kernel.org/stable/c/5a89a92efc342dd7c44b6056da87debc598f9c73 - () https://git.kernel.org/stable/c/5a89a92efc342dd7c44b6056da87debc598f9c73 - Patch
References () https://git.kernel.org/stable/c/7288ff561de650d4139fab80e9cb0da9b5b32434 - () https://git.kernel.org/stable/c/7288ff561de650d4139fab80e9cb0da9b5b32434 - Patch
References () https://git.kernel.org/stable/c/8eb42d6d10f8fe509117859defddf9e72b4fa4d0 - () https://git.kernel.org/stable/c/8eb42d6d10f8fe509117859defddf9e72b4fa4d0 - Patch
References () https://git.kernel.org/stable/c/a2882b8baad068d21c99fb2ab5a85a2bdbd5b834 - () https://git.kernel.org/stable/c/a2882b8baad068d21c99fb2ab5a85a2bdbd5b834 - Patch
First Time Linux
Linux linux Kernel
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5

26 Feb 2025, 07:01

Type Values Removed Values Added
New CVE
Information

Published : 2025-02-26 07:01

Updated : 2025-03-17 19:54

NVD link : CVE-2022-49312

Mitre link : CVE-2022-49312

CVE.ORG link : CVE-2022-49312

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-401

Missing Release of Memory after Effective Lifetime