Detections
Analytics
CVE-2022-49772
medium
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.
References
https://git.kernel.org/stable/c/e7dc436aea80308a9268e6d2d85f910ff107de9b
https://git.kernel.org/stable/c/c43991065f36f7628cd124e037b8750c4617a7a7
https://git.kernel.org/stable/c/ad72c3c3f6eb81d2cb189ec71e888316adada5df
https://git.kernel.org/stable/c/a80369c8ca50bc885d14386087a834659ec54a54
https://git.kernel.org/stable/c/872c9314769e89d8bda74ff3ac584756a45ee752
https://git.kernel.org/stable/c/368a01e5064c13946d032ab1d65ba95020a39cc5
https://git.kernel.org/stable/c/02b94885b2fdf1808b1874e009bfb90753f8f4db
https://git.kernel.org/stable/c/00f5f1bbf815a39e9eecb468d12ca55d3360eb10