Commit a106cd3d authored by Clemens Ladisch's avatar Clemens Ladisch Committed by Jaroslav Kysela
Browse files

[ALSA] rawmidi: protect against invalid device number in snd_rawmidi_info_select() 



Modules: RawMidi Midlevel

In snd_rawmidi_info_select(), check that the device identified by the
passed device number actually exists.

Signed-off-by: default avatarClemens Ladisch <clemens@ladisch.de>
parent ac09a925

sound/core/rawmidi.c

+2 −0
Original line number Diff line number Diff line
@@ -573,6 +573,8 @@ int snd_rawmidi_info_select(struct snd_card *card, struct snd_rawmidi_info *info 
	if (info->device >= SNDRV_RAWMIDI_DEVICES)

		return -ENXIO;

	rmidi = snd_rawmidi_devices[card->number * SNDRV_RAWMIDI_DEVICES + info->device];

	if (!rmidi)

		return -ENXIO;

	if (info->stream < 0 || info->stream > 1)

		return -EINVAL;

	pstr = &rmidi->streams[info->stream];

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