diff options
Diffstat (limited to 'sys/netinet/ip_icmp.c')
| -rw-r--r-- | sys/netinet/ip_icmp.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sys/netinet/ip_icmp.c b/sys/netinet/ip_icmp.c index c4ea24c..58a4915 100644 --- a/sys/netinet/ip_icmp.c +++ b/sys/netinet/ip_icmp.c @@ -654,8 +654,11 @@ icmp_reflect(m) if (opt == IPOPT_NOP) len = 1; else { + if (cnt < IPOPT_OLEN + sizeof(*cp)) + break; len = cp[IPOPT_OLEN]; - if (len <= 0 || len > cnt) + if (len < IPOPT_OLEN + sizeof(*cp) || + len > cnt) break; } /* |
