CVE-2022-49772
ALSA: usb-audio: Drop snd_BUG_ON() from snd_usbmidi_output_open()
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ALSA: usb-audio: Drop snd_BUG_ON() from snd_usbmidi_output_open()
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.
Reserved 2025-04-16 | Published 2025-05-01 | Updated 2025-05-04 | Assigner Linuxgit.kernel.org/...c/872c9314769e89d8bda74ff3ac584756a45ee752
git.kernel.org/...c/368a01e5064c13946d032ab1d65ba95020a39cc5
git.kernel.org/...c/c43991065f36f7628cd124e037b8750c4617a7a7
git.kernel.org/...c/e7dc436aea80308a9268e6d2d85f910ff107de9b
git.kernel.org/...c/a80369c8ca50bc885d14386087a834659ec54a54
git.kernel.org/...c/02b94885b2fdf1808b1874e009bfb90753f8f4db
git.kernel.org/...c/00f5f1bbf815a39e9eecb468d12ca55d3360eb10
git.kernel.org/...c/ad72c3c3f6eb81d2cb189ec71e888316adada5df
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