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ALSA: compress: info leak in snd_compr_get_caps()

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If the ->get_caps() function doesn't clear the buffer then there would
stack information leaked to userspace.  For example,
soc_compr_get_caps() can return success without clearing the buffer.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Dan Carpenter 2013-04-21 14:07:29 +03:00 committed by Takashi Iwai
parent f0283b58d0
commit 1c62e9f2b5
1 changed files with 1 additions and 0 deletions
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sound/core/compress_offload.c
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@ -409,6 +409,7 @@ snd_compr_get_caps(struct snd_compr_stream *stream, unsigned long arg)
if (!stream->ops->get_caps)
return -ENXIO;
memset(&caps, 0, sizeof(caps));
retval = stream->ops->get_caps(stream, &caps);
if (retval)
goto out;