CVE-2022-50229
ALSA bcd2000 Use-After-Free Vulnerability
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().
INFO
Published Date :
June 18, 2025, 11:15 a.m.
Last Modified :
June 18, 2025, 1:47 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
Exploitability Score :
References to Advisories, Solutions, and Tools
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CVE-2022-50229.
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Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 18, 2025
Action Type Old Value New Value Added 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(). Added Reference https://git.kernel.org/stable/c/05e0bb8c3c4dde3e21b9c1cf9395afb04e8b24db Added Reference https://git.kernel.org/stable/c/1d6a246cf97c380f2da76591f03019dd9c9599c3 Added Reference https://git.kernel.org/stable/c/348620464a5c127399ac09b266f494f393661952 Added Reference https://git.kernel.org/stable/c/4fc41f7ebb7efca282f1740ea934d16f33c1d109 Added Reference https://git.kernel.org/stable/c/5e7338f4dd92b2f8915a82abfa1dd3ad3464bea0 Added Reference https://git.kernel.org/stable/c/64ca7f50ad96c2c65ae390b954925a36eabe04aa Added Reference https://git.kernel.org/stable/c/a718eba7e458e2f40531be3c6b6a0028ca7fcace Added Reference https://git.kernel.org/stable/c/b0d4af0a4763ddc02344789ef2a281c494bc330d Added Reference https://git.kernel.org/stable/c/ffb2759df7efbc00187bfd9d1072434a13a54139
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-50229 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-50229
weaknesses.