diff options
| author | Dan Carpenter <error27@gmail.com> | 2010-09-16 22:13:47 +0400 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2010-09-17 00:50:51 +0400 |
| commit | 26e34e9e15aa48e9375ea4e97bc4234ad995b7c8 (patch) | |
| tree | 803a156b7a34a76bce5576c6c68fc0061e4372f9 /sound/usb/mixer.c | |
| parent | 4437ecdc7190302ed02fb1467c116aff29c325b2 (diff) | |
| download | linux-26e34e9e15aa48e9375ea4e97bc4234ad995b7c8.tar.xz | |
ALSA: usb/mixer: remove bogus cast
"uinfo->value.enumerated.item" is an unsigned int. If it's negative
when we do the comparison:
if ((int)uinfo->value.enumerated.item >= cval->max)
then we would read past the end of the array on the next line.
I also changed the strcpy() to strlcpy() out of paranoia.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/mixer.c')
| -rw-r--r-- | sound/usb/mixer.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index 5f12e294b0f8..f2d74d654b3c 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -1640,9 +1640,10 @@ static int mixer_ctl_selector_info(struct snd_kcontrol *kcontrol, struct snd_ctl uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; uinfo->count = 1; uinfo->value.enumerated.items = cval->max; - if ((int)uinfo->value.enumerated.item >= cval->max) + if (uinfo->value.enumerated.item >= cval->max) uinfo->value.enumerated.item = cval->max - 1; - strcpy(uinfo->value.enumerated.name, itemlist[uinfo->value.enumerated.item]); + strlcpy(uinfo->value.enumerated.name, itemlist[uinfo->value.enumerated.item], + sizeof(uinfo->value.enumerated.name)); return 0; } |