From eb6e98a1b25fb0f347fece9814257a9e1cb537c8 Mon Sep 17 00:00:00 2001 From: "nikolay@redhat.com" Date: Wed, 31 Oct 2012 04:42:51 +0000 Subject: [PATCH] bonding: fix off-by-one error Fix off-by-one error because IFNAMSIZ == 16 and when this code gets executed we stick a NULL byte where we should not. How to reproduce: with CONFIG_CC_STACKPROTECTOR=y (otherwise it may pass by silently) modprobe bonding; echo 1 > /sys/class/net/bond0/bonding/mode; echo "AAAAAAAAAAAAAAAA" > /sys/class/net/bond0/bonding/primary; Signed-off-by: Nikolay Aleksandrov Signed-off-by: David S. Miller --- drivers/net/bonding/bond_sysfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c index dc15d24..238d9b3 100644 --- a/drivers/net/bonding/bond_sysfs.c +++ b/drivers/net/bonding/bond_sysfs.c @@ -1060,7 +1060,7 @@ static ssize_t bonding_store_primary(struct device *d, goto out; } - sscanf(buf, "%16s", ifname); /* IFNAMSIZ */ + sscanf(buf, "%15s", ifname); /* IFNAMSIZ */ /* check to see if we are clearing primary */ if (!strlen(ifname) || buf[0] == '\n') { -- 2.7.4