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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2022-50542 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: media: si470x: Fix use-after-free in si470x_int_in_callback() syzbot reported use-after-free in si470x_int_in_callback() [1]. This indicates that urb->context, which contains struct si470x_device object, is freed when si470x_int_in_callback() is called. The cause of this issue is that si470x_int_in_callback() is called for freed urb. si470x_usb_driver_probe() calls si470x_start_usb(), which then calls usb_submit_urb() and si470x_start(). If si470x_start_usb() fails, si470x_usb_driver_probe() doesn't kill urb, but it just frees struct si470x_device object, as depicted below: si470x_usb_driver_probe() ... si470x_start_usb() ... usb_submit_urb() retval = si470x_start() return retval if (retval < 0) free struct si470x_device object, but don't kill urb This patch fixes this issue by killing urb when si470x_start_usb() fails and urb is submitted. If si470x_start_usb() fails and urb is not submitted, i.e. submitting usb fails, it just frees struct si470x_device object.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/0ca298d548461d29615f9a2b1309e8dcf4a352c6 kernel.org
https://git.kernel.org/stable/c/146bd005ebb01ae190c22af050cb98623958c373 kernel.org
https://git.kernel.org/stable/c/1c6447d0fc68650e51586dde79b5090d9d77f13a kernel.org
https://git.kernel.org/stable/c/52f54fe78cca24850a30865037250f63eb3d5bf7 kernel.org
https://git.kernel.org/stable/c/63648a7bd1a7599bcc2040a6d1792363ae4c2e1b kernel.org
https://git.kernel.org/stable/c/6c8aee0c8fcc6dda94315f7908e8fa9bc75abe75 kernel.org
https://git.kernel.org/stable/c/7d21e0b1b41b21d628bf2afce777727bd4479aa5 kernel.org
https://git.kernel.org/stable/c/8c6151b8e8dd2d98ad2cd725d26d1e103d989891 kernel.org
https://git.kernel.org/stable/c/92b0888398e4ba51d93b618a6506781f4e3879c9 kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2022-50542
NVD Published Date:
10/07/2025
NVD Last Modified:
10/07/2025
Source:
kernel.org