FKIE_CVE-2022-49772

Vulnerability from fkie_nvd - Published: 2025-05-01 15:16 - Updated: 2025-11-07 18:25
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/00f5f1bbf815a39e9eecb468d12ca55d3360eb10Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/02b94885b2fdf1808b1874e009bfb90753f8f4dbPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/368a01e5064c13946d032ab1d65ba95020a39cc5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/872c9314769e89d8bda74ff3ac584756a45ee752Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a80369c8ca50bc885d14386087a834659ec54a54Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ad72c3c3f6eb81d2cb189ec71e888316adada5dfPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c43991065f36f7628cd124e037b8750c4617a7a7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e7dc436aea80308a9268e6d2d85f910ff107de9bPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
To clipboard 

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb-audio: Drop snd_BUG_ON() from snd_usbmidi_output_open()\n\nsnd_usbmidi_output_open() has a check of the NULL port with\nsnd_BUG_ON().  snd_BUG_ON() was used as this shouldn\u0027t have happened,\nbut in reality, the NULL port may be seen when the device gives an\ninvalid endpoint setup at the descriptor, hence the driver skips the\nallocation.  That is, the check itself is valid and snd_BUG_ON()\nshould be dropped from there.  Otherwise it\u0027s confusing as if it were\na real bug, as recently syzbot stumbled on it."
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  "id": "CVE-2022-49772",
  "lastModified": "2025-11-07T18:25:51.180",
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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