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w1: avoid potential u16 overflow

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Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: David Fries <David@Fries.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
David Fries 2014-11-10 20:19:37 -06:00 committed by Greg Kroah-Hartman
parent a30cfa475d
commit 4b97b27939
1 changed files with 1 additions and 1 deletions
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2
drivers/w1/w1_netlink.c
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@ -598,7 +598,7 @@ static void w1_cn_callback(struct cn_msg *cn, struct netlink_skb_parms *nsp)
msg = (struct w1_netlink_msg *)(cn + 1); msg = (struct w1_netlink_msg *)(cn + 1);
if (node_count) { if (node_count) {
int size; int size;
u16 reply_size = sizeof(*cn) + cn->len + slave_len; int reply_size = sizeof(*cn) + cn->len + slave_len;
if (cn->flags & W1_CN_BUNDLE) { if (cn->flags & W1_CN_BUNDLE) {
/* bundling duplicats some of the messages */ /* bundling duplicats some of the messages */
reply_size += 2 * cmd_count * (sizeof(struct cn_msg) + reply_size += 2 * cmd_count * (sizeof(struct cn_msg) +