CVE-2022-50229

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Source
https://cve.org/CVERecord?id=CVE-2022-50229
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-50229.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2022-50229
Downstream
Related
Published
2025-06-18T11:04:06.069Z
Modified
2026-03-20T12:05:34.172866Z
Summary
ALSA: bcd2000: Fix a UAF bug on the error path of probing
Details

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 sndcardregister() at probe time, it will free the 'bcd2k->midiouturb' before killing it, which may cause a UAF bug.

The following log can reveal it:

[ 50.727020] BUG: KASAN: use-after-free in bcd2000inputcomplete+0x1f1/0x2e0 [sndbcd2000] [ 50.727623] Read of size 8 at addr ffff88810fab0e88 by task swapper/4/0 [ 50.729530] Call Trace: [ 50.732899] bcd2000inputcomplete+0x1f1/0x2e0 [sndbcd2000]

Fix this by adding usbkillurb() before usbfreeurb().

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50229.json",
    "cna_assigner": "Linux"
}
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
b47a22290d581277be70e8a597824a4985d39e83
Fixed
a718eba7e458e2f40531be3c6b6a0028ca7fcace
Fixed
4fc41f7ebb7efca282f1740ea934d16f33c1d109
Fixed
5e7338f4dd92b2f8915a82abfa1dd3ad3464bea0
Fixed
05e0bb8c3c4dde3e21b9c1cf9395afb04e8b24db
Fixed
348620464a5c127399ac09b266f494f393661952
Fixed
64ca7f50ad96c2c65ae390b954925a36eabe04aa
Fixed
1d6a246cf97c380f2da76591f03019dd9c9599c3
Fixed
b0d4af0a4763ddc02344789ef2a281c494bc330d
Fixed
ffb2759df7efbc00187bfd9d1072434a13a54139

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-50229.json"