From: David Kimdon <redacted>

dev->name and ndev->name are both IFNAMSIZ in length, the ".%d" is
not guarenteed to fit in ndev->name.

Signed-off-by: David Kimdon <redacted>
Signed-off-by: Jiri Benc <redacted>

---

 net/d80211/ieee80211_iface.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

e268081fcce1027a23420bfe74c59bf130742bce

diff --git a/net/d80211/ieee80211_iface.c b/net/d80211/ieee80211_iface.c
index ae1fb9e..bb15442 100644
--- a/net/d80211/ieee80211_iface.c
+++ b/net/d80211/ieee80211_iface.c

@@ -56,7 +56,8 @@ int ieee80211_if_add(struct net_device *
 	if (strlen(name) == 0) {
 		i = 0;
 		do {
-			sprintf(ndev->name, "%s.%d", dev->name, i++);
+			snprintf(ndev->name, sizeof(ndev->name), "%s.%d",
+				 dev->name, i++);
 			tmp_dev = dev_get_by_name(ndev->name);
 			if (!tmp_dev)
 				break;

-- 
1.3.0