From f2c23625e1ec3c4b7ab03c99f45c1e77ee0f27c2 Mon Sep 17 00:00:00 2001 From: Gabor Juhos Date: Thu, 27 Sep 2012 20:05:42 +0000 Subject: [PATCH] ar71xx: avoid possible NULL pointer dereference in ath79_init_{,local}_mac git-svn-id: svn://svn.openwrt.org/openwrt/trunk@33575 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- target/linux/ar71xx/files/arch/mips/ath79/dev-eth.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/target/linux/ar71xx/files/arch/mips/ath79/dev-eth.c b/target/linux/ar71xx/files/arch/mips/ath79/dev-eth.c index d2d0ee87f0..4487958bc7 100644 --- a/target/linux/ar71xx/files/arch/mips/ath79/dev-eth.c +++ b/target/linux/ar71xx/files/arch/mips/ath79/dev-eth.c @@ -992,7 +992,10 @@ void __init ath79_init_mac(unsigned char *dst, const unsigned char *src, { int t; - if (!is_valid_ether_addr(src)) { + if (!dst) + return; + + if (!src || !is_valid_ether_addr(src)) { memset(dst, '\0', ETH_ALEN); return; } @@ -1012,7 +1015,10 @@ void __init ath79_init_local_mac(unsigned char *dst, const unsigned char *src) { int i; - if (!is_valid_ether_addr(src)) { + if (!dst) + return; + + if (!src || !is_valid_ether_addr(src)) { memset(dst, '\0', ETH_ALEN); return; }