From 14e45c15e1dcc4d972b41343661683efd60fed72 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <error27@gmail.com>
Date: Wed, 9 Jun 2010 14:01:54 +0200
Subject: [PATCH] sata_sil24: memset() overflow
cb->atapi.cdb is an array of 16 u8 elements. The call too memset()
would set the first part of the sge array to zero as well. It's not
a packed struct.
This one has been around for five years. I found it with Smatch. I
think the reason no one has seen it before is because we normally call
sil24_fill_sg() and that overwrites sge with proper information?
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---
drivers/ata/sata_sil24.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/ata/sata_sil24.c b/drivers/ata/sata_sil24.c
index 70b58fe9e5b1..a7f0139c3aae 100644
--- a/drivers/ata/sata_sil24.c
+++ b/drivers/ata/sata_sil24.c
@@ -865,7 +865,7 @@ static void sil24_qc_prep(struct ata_queued_cmd *qc)
} else {
prb = &cb->atapi.prb;
sge = cb->atapi.sge;
- memset(cb->atapi.cdb, 0, 32);
+ memset(cb->atapi.cdb, 0, sizeof(cb->atapi.cdb));
memcpy(cb->atapi.cdb, qc->cdb, qc->dev->cdb_len);
if (ata_is_data(qc->tf.protocol)) {
--
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