From d76556549e7a97c25269644afd0b1b18a6c42214 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Thu, 19 Apr 2012 10:00:19 +0300 Subject: [PATCH] ksz884x: don't copy too much in netdev_set_mac_address() [ Upstream commit 716af4abd6e6370226f567af50bfaca274515980 ] MAX_ADDR_LEN is 32. ETH_ALEN is 6. mac->sa_data is a 14 byte array, so the memcpy() is doing a read past the end of the array. I asked about this on netdev and Ben Hutchings told me it's supposed to be copying ETH_ALEN bytes (thanks Ben). Signed-off-by: Dan Carpenter Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/net/ksz884x.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ksz884x.c b/drivers/net/ksz884x.c index 41ea5920c158..95b6664e9366 100644 --- a/drivers/net/ksz884x.c +++ b/drivers/net/ksz884x.c @@ -5679,7 +5679,7 @@ static int netdev_set_mac_address(struct net_device *dev, void *addr) memcpy(hw->override_addr, mac->sa_data, MAC_ADDR_LEN); } - memcpy(dev->dev_addr, mac->sa_data, MAX_ADDR_LEN); + memcpy(dev->dev_addr, mac->sa_data, ETH_ALEN); interrupt = hw_block_intr(hw); -- 2.39.5