diff options
| -rw-r--r-- | extensions/arpt_mangle.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/extensions/arpt_mangle.c b/extensions/arpt_mangle.c index fa59b13..3bf44e4 100644 --- a/extensions/arpt_mangle.c +++ b/extensions/arpt_mangle.c @@ -105,6 +105,8 @@ parse(int c, char **argv, int invert, unsigned int *flags, exit_error(PARAMETER_PROBLEM, "only --h-length 6 " "supported"); macaddr = ether_aton(argv[optind-1]); + if (macaddr == NULL) + exit_error(PARAMETER_PROBLEM, "invalid source MAC"); memcpy(mangle->src_devaddr, macaddr, e->arp.arhln); mangle->flags |= ARPT_MANGLE_SDEV; break; @@ -118,6 +120,8 @@ parse(int c, char **argv, int invert, unsigned int *flags, exit_error(PARAMETER_PROBLEM, "only --h-length 6 " "supported"); macaddr = ether_aton(argv[optind-1]); + if (macaddr == NULL) + exit_error(PARAMETER_PROBLEM, "invalid target MAC"); memcpy(mangle->tgt_devaddr, macaddr, e->arp.arhln); mangle->flags |= ARPT_MANGLE_TDEV; break; |