CVE-2022-50542

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Source
https://cve.org/CVERecord?id=CVE-2022-50542
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-50542.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2022-50542
Downstream
Related
Published
2025-10-07T15:21:07Z
Modified
2026-08-12T03:30:20Z
Summary
media: si470x: Fix use-after-free in si470x_int_in_callback()
Details

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.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50542.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
779471110c6f0f7f7c223fc696170ec750ac3531
Fixed
146bd005ebb01ae190c22af050cb98623958c373
Fixed
8c6151b8e8dd2d98ad2cd725d26d1e103d989891
Fixed
52f54fe78cca24850a30865037250f63eb3d5bf7
Fixed
0ca298d548461d29615f9a2b1309e8dcf4a352c6
Fixed
1c6447d0fc68650e51586dde79b5090d9d77f13a
Fixed
6c8aee0c8fcc6dda94315f7908e8fa9bc75abe75
Fixed
63648a7bd1a7599bcc2040a6d1792363ae4c2e1b
Fixed
92b0888398e4ba51d93b618a6506781f4e3879c9
Fixed
7d21e0b1b41b21d628bf2afce777727bd4479aa5

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-50542.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.6.0
Fixed
4.9.337
Type
ECOSYSTEM
Events
Introduced
4.10.0
Fixed
4.14.303
Type
ECOSYSTEM
Events
Introduced
4.15.0
Fixed
4.19.270
Type
ECOSYSTEM
Events
Introduced
4.20.0
Fixed
5.4.229
Type
ECOSYSTEM
Events
Introduced
5.5.0
Fixed
5.10.163
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.86
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.0.16
Type
ECOSYSTEM
Events
Introduced
6.1.0
Fixed
6.1.2

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-50542.json"