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ALSA: hda_hwdep: Fix possible buffer overflow 

If a line in the firmware file is larger than the given buffer size (and
so the firmware file size), size is set to a value larger than the actual
buffer size. This results in an overflow in the buffer passed.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Alexander Stein 2011-11-01 09:40:07 +01:00 committed by Takashi Iwai
parent 228cf79376
commit 359f90982c
1 changed files with 0 additions and 2 deletions
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2
sound/pci/hda/hda_hwdep.c
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@ -756,8 +756,6 @@ static int get_line_from_fw(char *buf, int size, struct firmware *fw)
}
if (!fw->size)
return 0;
if (size < fw->size)
size = fw->size;
for (len = 0; len < fw->size; len++) {
if (!*p)