diff options
Diffstat (limited to 'sys/netinet/ip_output.c')
| -rw-r--r-- | sys/netinet/ip_output.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/netinet/ip_output.c b/sys/netinet/ip_output.c index 8faed58..2536b63 100644 --- a/sys/netinet/ip_output.c +++ b/sys/netinet/ip_output.c @@ -1382,8 +1382,10 @@ ip_pcbopts(optname, pcbopt, m) if (opt == IPOPT_NOP) optlen = 1; else { + if (cnt < IPOPT_OLEN + sizeof(*cp)) + goto bad; optlen = cp[IPOPT_OLEN]; - if (optlen <= IPOPT_OLEN || optlen > cnt) + if (optlen < IPOPT_OLEN + sizeof(*cp) || optlen > cnt) goto bad; } switch (opt) { |
