drivers: eth: native_posix: Null terminate interface name
The interface name is IFNAMSIZ long so we must not copy it
full which would overwrite the terminating null byte.
Coverity-CID: 195770
Fixes #14419
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
diff --git a/drivers/ethernet/eth_native_posix_adapt.c b/drivers/ethernet/eth_native_posix_adapt.c
index 8045b1d..b34174b 100644
--- a/drivers/ethernet/eth_native_posix_adapt.c
+++ b/drivers/ethernet/eth_native_posix_adapt.c
@@ -67,7 +67,7 @@
#ifdef __linux
ifr.ifr_flags = (tun_only ? IFF_TUN : IFF_TAP) | IFF_NO_PI;
- strncpy(ifr.ifr_name, if_name, IFNAMSIZ);
+ strncpy(ifr.ifr_name, if_name, IFNAMSIZ - 1);
ret = ioctl(fd, TUNSETIFF, (void *)&ifr);
if (ret < 0) {
