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| author |   Clemens Ladisch <clemens@ladisch.de> | 2005-11-20 13:59:56 +0100 |
|---|---|---|
| committer |   Jaroslav Kysela <perex@suse.cz> | 2006-01-03 12:29:12 +0100 |
| commit | a106cd3d9e88c8761bd0eac2ce402cc82bd11fea (patch) | |
| tree | 1dd614d50a0bd30af45fd63372f02da5a5fe86e6 /sound/core/rawmidi.c | |
| parent | [ALSA] cs5535audio: move sound/driver.h to the top (diff) | |
| download | linux-dev-a106cd3d9e88c8761bd0eac2ce402cc82bd11fea.tar.xz linux-dev-a106cd3d9e88c8761bd0eac2ce402cc82bd11fea.zip | |
[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: Clemens Ladisch <clemens@ladisch.de>
Diffstat (limited to 'sound/core/rawmidi.c')
| -rw-r--r-- | sound/core/rawmidi.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c index 7a86a9a08a15..d703545cae8a 100644 --- a/sound/core/rawmidi.c +++ b/sound/core/rawmidi.c @@ -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]; |