CVE-2022-49312

MEDIUM EPSS 15.7%
Published Feb 26, 20251y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Feb 26, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

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().

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
15.7% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-401

Affected Products 4

VendorProductVersionRange
linuxlinux_kernel* <5.10.122
linuxlinux_kernel*≥5.11  –  <5.15.47
linuxlinux_kernel*≥5.16  –  <5.17.15
linuxlinux_kernel*≥5.18  –  <5.18.4

References 5

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

Remediation

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