CVE-2022-50229

ALSA: bcd2000: Fix a UAF bug on the error path of probing

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: bcd2000: Fix a UAF bug on the error path of probing When the driver fails in snd_card_register() at probe time, it will free the 'bcd2k->midi_out_urb' before killing it, which may cause a UAF bug. The following log can reveal it: [ 50.727020] BUG: KASAN: use-after-free in bcd2000_input_complete+0x1f1/0x2e0 [snd_bcd2000] [ 50.727623] Read of size 8 at addr ffff88810fab0e88 by task swapper/4/0 [ 50.729530] Call Trace: [ 50.732899] bcd2000_input_complete+0x1f1/0x2e0 [snd_bcd2000] Fix this by adding usb_kill_urb() before usb_free_urb().

N/A

CVSS

Severity:

EPSS 0.03%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/a718eba7e458e2f40531be3c6b6a0028ca7fcace
https://git.kernel.org/stable/c/4fc41f7ebb7efca282f1740ea934d16f33c1d109
https://git.kernel.org/stable/c/5e7338f4dd92b2f8915a82abfa1dd3ad3464bea0
https://git.kernel.org/stable/c/05e0bb8c3c4dde3e21b9c1cf9395afb04e8b24db
https://git.kernel.org/stable/c/348620464a5c127399ac09b266f494f393661952
https://git.kernel.org/stable/c/64ca7f50ad96c2c65ae390b954925a36eabe04aa
https://git.kernel.org/stable/c/1d6a246cf97c380f2da76591f03019dd9c9599c3
https://git.kernel.org/stable/c/b0d4af0a4763ddc02344789ef2a281c494bc330d
https://git.kernel.org/stable/c/ffb2759df7efbc00187bfd9d1072434a13a54139

Frequently Asked Questions

What is the severity of CVE-2022-50229?: CVE-2022-50229 has not yet been assigned a CVSS score.
How to fix CVE-2022-50229?: To fix CVE-2022-50229, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-50229 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2022-50229 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-50229?: CVE-2022-50229 affects Linux Linux, Linux Linux.

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