Commit 4d6ff250 by Dan Carpenter Committed by Takashi Iwai

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: c614475b ('ALSA: dice: add a proc file to show device information') Signed-off-by: 's avatarDan Carpenter <dan.carpenter@oracle.com> Acked-by: 's avatarClemens Ladisch <clemens@ladisch.de> Signed-off-by: 's avatarTakashi Iwai <tiwai@suse.de>
parent eb82594b
......@@ -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,
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment