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>

1 files changed, 0 insertions, 2 deletions

diff --git a/sound/pci/hda/hda_hwdep.c b/sound/pci/hda/hda_hwdep.c
index 72e5885007cc..7e7d0788ddcf 100644
--- a/sound/pci/hda/hda_hwdep.c
+++ b/sound/pci/hda/hda_hwdep.c
@@ -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)