CVE-2022-50229

Advisory lineage Upstream: 0 Downstream: 16
Analyzed
Published: 18 Jun 2025, 11:04
Last modified:11 May 2026, 19:15

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
0.06% LOW
0% probability +0.04%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

18 Jun 2025, 11:04
Published
Vulnerability first disclosed
11 May 2026, 19:15
Last Modified
Vulnerability information updated

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().

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.06%• Percentile: 19%

Techniques & Countermeasures

  • CWE-416•Use After Free

    The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected Systems

  • linux•linux

    ≥ b47a22290d581277be70e8a597824a4985d39e83, < a718eba7e458e2f40531be3c6b6a0028ca7fcace | ≥ b47a22290d581277be70e8a597824a4985d39e83, < 4fc41f7ebb7efca282f1740ea934d16f33c1d109 | ≥ b47a22290d581277be70e8a597824a4985d39e83, < 5e7338f4dd92b2f8915a82abfa1dd3ad3464bea0 | ≥ b47a22290d581277be70e8a597824a4985d39e83, < 05e0bb8c3c4dde3e21b9c1cf9395afb04e8b24db | ≥ b47a22290d581277be70e8a597824a4985d39e83, < 348620464a5c127399ac09b266f494f393661952 | ≥ b47a22290d581277be70e8a597824a4985d39e83, < 64ca7f50ad96c2c65ae390b954925a36eabe04aa | ≥ b47a22290d581277be70e8a597824a4985d39e83, < 1d6a246cf97c380f2da76591f03019dd9c9599c3 | ≥ b47a22290d581277be70e8a597824a4985d39e83, < b0d4af0a4763ddc02344789ef2a281c494bc330d | ≥ b47a22290d581277be70e8a597824a4985d39e83, < ffb2759df7efbc00187bfd9d1072434a13a54139 | 3.16

  • linux•linux_kernel

    ≥ 3.16, < 4.9.326 | ≥ 4.10, < 4.14.291 | ≥ 4.15, < 4.19.256 | ≥ 4.20, < 5.4.211 | ≥ 5.5, < 5.10.137 | ≥ 5.11, < 5.15.61 | ≥ 5.16, < 5.18.18 | ≥ 5.19, < 5.19.2

References (9)