CVE-2022-49772

MEDIUM EPSS 5.5%
Published May 1, 20251y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published May 1, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Drop snd_BUG_ON() from snd_usbmidi_output_open() snd_usbmidi_output_open() has a check of the NULL port with snd_BUG_ON(). snd_BUG_ON() was used as this shouldn't have happened, but in reality, the NULL port may be seen when the device gives an invalid endpoint setup at the descriptor, hence the driver skips the allocation. That is, the check itself is valid and snd_BUG_ON() should be dropped from there. Otherwise it's confusing as if it were a real bug, as recently syzbot stumbled on it.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
5.5% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 12

VendorProductVersionRange
linuxlinux_kernel* <4.9.334
linuxlinux_kernel*≥4.10  –  <4.14.300
linuxlinux_kernel*≥4.15  –  <4.19.267
linuxlinux_kernel*≥4.20  –  <5.4.225
linuxlinux_kernel*≥5.5  –  <5.10.156
linuxlinux_kernel*≥5.11  –  <5.15.80
linuxlinux_kernel*≥5.16  –  <6.0.10
linuxlinux_kernel6.1any
linuxlinux_kernel6.1any
linuxlinux_kernel6.1any
linuxlinux_kernel6.1any
linuxlinux_kernel6.1any

References 6

  • git.kernel.org https://git.kernel.org/stable/c/00f5f1bbf815a39e9eecb468d12ca55d3360eb10
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/02b94885b2fdf1808b1874e009bfb90753f8f4db
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a80369c8ca50bc885d14386087a834659ec54a54
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ad72c3c3f6eb81d2cb189ec71e888316adada5df
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c43991065f36f7628cd124e037b8750c4617a7a7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e7dc436aea80308a9268e6d2d85f910ff107de9b
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/00f5f1bbf815a39e9eecb468d12ca55d3360eb10
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/02b94885b2fdf1808b1874e009bfb90753f8f4db
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a80369c8ca50bc885d14386087a834659ec54a54
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ad72c3c3f6eb81d2cb189ec71e888316adada5df
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c43991065f36f7628cd124e037b8750c4617a7a7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e7dc436aea80308a9268e6d2d85f910ff107de9b
    Patch