2019-11-30 18:31:24 +00:00
|
|
|
From b5bc80763b7bf0f9e32a9a4d4f930ff50d02385d Mon Sep 17 00:00:00 2001
|
2015-12-17 08:24:01 +00:00
|
|
|
From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
|
|
|
|
|
<marmarek@invisiblethingslab.com>
|
|
|
|
|
Date: Wed, 16 Dec 2015 05:22:24 +0100
|
2018-08-15 12:57:19 +00:00
|
|
|
Subject: [PATCH] xen-netfront: add range check for Tx response id
|
2015-12-17 08:24:01 +00:00
|
|
|
MIME-Version: 1.0
|
|
|
|
|
Content-Type: text/plain; charset=UTF-8
|
|
|
|
|
Content-Transfer-Encoding: 8bit
|
|
|
|
|
|
|
|
|
|
Tx response ID is fetched from shared page, so make sure it is sane
|
|
|
|
|
before using it as an array index.
|
|
|
|
|
|
|
|
|
|
This is part of XSA155.
|
|
|
|
|
|
|
|
|
|
CC: stable@vger.kernel.org
|
|
|
|
|
Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
|
|
|
|
|
---
|
|
|
|
|
drivers/net/xen-netfront.c | 1 +
|
|
|
|
|
1 file changed, 1 insertion(+)
|
|
|
|
|
|
|
|
|
|
diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
|
2019-11-30 18:31:24 +00:00
|
|
|
index 56c8a4a32672..e11df925c0dc 100644
|
2015-12-17 08:24:01 +00:00
|
|
|
--- a/drivers/net/xen-netfront.c
|
|
|
|
|
+++ b/drivers/net/xen-netfront.c
|
2019-03-15 21:28:57 +00:00
|
|
|
@@ -392,6 +392,7 @@ static void xennet_tx_buf_gc(struct netfront_queue *queue)
|
2015-12-17 08:24:01 +00:00
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
id = txrsp.id;
|
|
|
|
|
+ BUG_ON(id >= NET_TX_RING_SIZE);
|
|
|
|
|
skb = queue->tx_skbs[id].skb;
|
|
|
|
|
if (unlikely(gnttab_query_foreign_access(
|
|
|
|
|
queue->grant_tx_ref[id]) != 0)) {
|
|
|
|
|
--
|
2019-11-30 18:31:24 +00:00
|
|
|
2.21.0
|
2015-12-17 08:24:01 +00:00
|
|
|
|
