From 4d6ff250857a8b5f8e33ea62ff16f165085f8655 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Fri, 29 Nov 2013 11:14:09 +0300 Subject: ALSA: dice: fix array limits in dice_proc_read() The array limits are supposed to be in units of u32 instead of in bytes. The current code has a potential array overflow. Fixes: c614475b0ea9 ('ALSA: dice: add a proc file to show device information') Signed-off-by: Dan Carpenter Acked-by: Clemens Ladisch Signed-off-by: Takashi Iwai --- sound/firewire/dice.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/sound/firewire/dice.c +++ b/sound/firewire/dice.c @@ -1019,7 +1019,7 @@ static void dice_proc_read(struct snd_info_entry *entry, if (dice_proc_read_mem(dice, &tx_rx_header, sections[2], 2) < 0) return; - quadlets = min_t(u32, tx_rx_header.size, sizeof(buf.tx)); + quadlets = min_t(u32, tx_rx_header.size, sizeof(buf.tx) / 4); for (stream = 0; stream < tx_rx_header.number; ++stream) { if (dice_proc_read_mem(dice, &buf.tx, sections[2] + 2 + stream * tx_rx_header.size, @@ -1045,7 +1045,7 @@ static void dice_proc_read(struct snd_info_entry *entry, if (dice_proc_read_mem(dice, &tx_rx_header, sections[4], 2) < 0) return; - quadlets = min_t(u32, tx_rx_header.size, sizeof(buf.rx)); + quadlets = min_t(u32, tx_rx_header.size, sizeof(buf.rx) / 4); for (stream = 0; stream < tx_rx_header.number; ++stream) { if (dice_proc_read_mem(dice, &buf.rx, sections[4] + 2 + stream * tx_rx_header.size,