ALSA: ump: Don't accept an invalid UMP protocol number

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When a UMP Stream Configuration message is received, the driver tries
to switch the protocol, but there was no sanity check of the protocol,
hence it can pass an invalid value.  Add the check and bail out if a
wrong value is passed.

Fixes: a798076837 ("ALSA: ump: Add helper to change MIDI protocol")
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20240529164723.18309-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

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Takashi Iwai 2024-05-29 18:47:16 +02:00

parent 6d40dbc758

commit ac0d71ee53

1 changed files with 7 additions and 0 deletions

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sound/core/ump.c

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