cbcvebase.
CVE-2022-50542
published 2025-10-07

CVE-2022-50542: In the Linux kernel, the following vulnerability has been resolved: media: si470x: Fix use-after-free in si470x_int_in_callback() syzbot reported…

PriorityP338high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.15%
4.9th percentile
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.

Affected

23 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.4-1 (bookworm)linux 6.1.4-1 (bookworm)
linuxlinux——
linuxlinux>= 779471110c6f0f7f7c223fc696170ec750ac3531 < 146bd005ebb01ae190c22af050cb98623958c373146bd005ebb01ae190c22af050cb98623958c373
linuxlinux>= 779471110c6f0f7f7c223fc696170ec750ac3531 < 8c6151b8e8dd2d98ad2cd725d26d1e103d9898918c6151b8e8dd2d98ad2cd725d26d1e103d989891
linuxlinux>= 779471110c6f0f7f7c223fc696170ec750ac3531 < 52f54fe78cca24850a30865037250f63eb3d5bf752f54fe78cca24850a30865037250f63eb3d5bf7
linuxlinux>= 779471110c6f0f7f7c223fc696170ec750ac3531 < 0ca298d548461d29615f9a2b1309e8dcf4a352c60ca298d548461d29615f9a2b1309e8dcf4a352c6
linuxlinux>= 779471110c6f0f7f7c223fc696170ec750ac3531 < 1c6447d0fc68650e51586dde79b5090d9d77f13a1c6447d0fc68650e51586dde79b5090d9d77f13a
linuxlinux>= 779471110c6f0f7f7c223fc696170ec750ac3531 < 6c8aee0c8fcc6dda94315f7908e8fa9bc75abe756c8aee0c8fcc6dda94315f7908e8fa9bc75abe75
linuxlinux>= 779471110c6f0f7f7c223fc696170ec750ac3531 < 63648a7bd1a7599bcc2040a6d1792363ae4c2e1b63648a7bd1a7599bcc2040a6d1792363ae4c2e1b
linuxlinux>= 779471110c6f0f7f7c223fc696170ec750ac3531 < 92b0888398e4ba51d93b618a6506781f4e3879c992b0888398e4ba51d93b618a6506781f4e3879c9
linuxlinux>= 779471110c6f0f7f7c223fc696170ec750ac3531 < 7d21e0b1b41b21d628bf2afce777727bd4479aa57d21e0b1b41b21d628bf2afce777727bd4479aa5
linuxlinux_kernel>= 0 < 5.10.178-15.10.178-1
linuxlinux_kernel>= 0 < 6.1.4-16.1.4-1
linuxlinux_kernel>= 0 < 6.1.4-16.1.4-1
linuxlinux_kernel>= 0 < 6.1.4-16.1.4-1
linuxlinux_kernel>= 3.6 < 4.9.3374.9.337
linuxlinux_kernel>= 4.10 < 4.14.3034.14.303
linuxlinux_kernel>= 4.15 < 4.19.2704.19.270
linuxlinux_kernel>= 4.20 < 5.4.2295.4.229
linuxlinux_kernel>= 5.11 < 5.15.865.15.86
linuxlinux_kernel>= 5.16 < 6.0.166.0.16
linuxlinux_kernel>= 5.5 < 5.10.1635.10.163
linuxlinux_kernel>= 6.1 < 6.1.26.1.2

CVSS provenance

nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.