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.
References
Configurations
Configuration 1 (hide)
|
History
04 Feb 2026, 18:53
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Linux
Linux linux Kernel |
|
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| CWE | CWE-416 | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.8 |
| References | () https://git.kernel.org/stable/c/0ca298d548461d29615f9a2b1309e8dcf4a352c6 - Patch | |
| References | () https://git.kernel.org/stable/c/146bd005ebb01ae190c22af050cb98623958c373 - Patch | |
| References | () https://git.kernel.org/stable/c/1c6447d0fc68650e51586dde79b5090d9d77f13a - Patch | |
| References | () https://git.kernel.org/stable/c/52f54fe78cca24850a30865037250f63eb3d5bf7 - Patch | |
| References | () https://git.kernel.org/stable/c/63648a7bd1a7599bcc2040a6d1792363ae4c2e1b - Patch | |
| References | () https://git.kernel.org/stable/c/6c8aee0c8fcc6dda94315f7908e8fa9bc75abe75 - Patch | |
| References | () https://git.kernel.org/stable/c/7d21e0b1b41b21d628bf2afce777727bd4479aa5 - Patch | |
| References | () https://git.kernel.org/stable/c/8c6151b8e8dd2d98ad2cd725d26d1e103d989891 - Patch | |
| References | () https://git.kernel.org/stable/c/92b0888398e4ba51d93b618a6506781f4e3879c9 - Patch |
07 Oct 2025, 16:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-10-07 16:15
Updated : 2026-02-04 18:53
NVD link : CVE-2022-50542
Mitre link : CVE-2022-50542
CVE.ORG link : CVE-2022-50542
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-416
Use After Free