CVE-2023-54022

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix potential memory leaks at error path for UMP open The allocation and initialization errors at alloc_midi_urbs() that is called at MIDI 2.0 / UMP device are supposed to be handled at the caller side by invoking free_midi_urbs(). However, free_midi_urbs() loops only for ep->num_urbs entries, and since ep->num_entries wasn't updated yet at the allocation / init error in alloc_midi_urbs(), this entry won't be released. The intention of free_midi_urbs() is to release the whole elements, so change the loop size to NUM_URBS to scan over all elements for fixing the missed releases. Also, the call of free_midi_urbs() is missing at snd_usb_midi_v2_open(). Although it'll be released later at reopen/close or disconnection, it's better to release immediately at the error path.

The following products are affected by CVE-2023-54022 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2023-54022.

URL	Resource
https://git.kernel.org/stable/c/b1757fa30ef14f254f4719bf6f7d54a4c8207216
https://git.kernel.org/stable/c/f819b343aa95d24d5f7d6e06660c7f62591abc5f
https://lore.kernel.org/linux-cve-announce/2025122434-CVE-2023-54022-ae26@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2023-54022
https://www.cve.org/CVERecord?id=CVE-2023-54022