[PATCH 3/5] net: fortify eth_platform_get_mac_address()
From: Bartosz Golaszewski <hidden>
Date: 2018-07-18 16:10:51
Also in:
linux-omap, lkml, netdev
Subsystem:
networking [general], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Bartosz Golaszewski <redacted> We'll soon have more sources from which to read the MAC address in this routine. Make sure the address is correct before returning it. Signed-off-by: Bartosz Golaszewski <redacted> --- net/ethernet/eth.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/ethernet/eth.c b/net/ethernet/eth.c
index 2a2173324d9e..6b64586fd2af 100644
--- a/net/ethernet/eth.c
+++ b/net/ethernet/eth.c@@ -544,7 +544,7 @@ int eth_platform_get_mac_address(struct device *dev, u8 *mac_addr) from = "arch callback"; } - if (!addr) + if (!addr || !is_valid_ether_addr(addr)) return -ENODEV; dev_info(dev, "read MAC address from %s\n", from);
--
2.17.1