diff options
| -rw-r--r-- | net/dccp/options.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/net/dccp/options.c b/net/dccp/options.c index dc7c158a2f4b..4284f0856047 100644 --- a/net/dccp/options.c +++ b/net/dccp/options.c @@ -81,11 +81,11 @@ int dccp_parse_options(struct sock *sk, struct dccp_request_sock *dreq, /* Check if this isn't a single byte option */ if (opt > DCCPO_MAX_RESERVED) { if (opt_ptr == opt_end) - goto out_invalid_option; + goto out_nonsensical_length; len = *opt_ptr++; - if (len < 3) - goto out_invalid_option; + if (len < 2) + goto out_nonsensical_length; /* * Remove the type and len fields, leaving * just the value size @@ -95,7 +95,7 @@ int dccp_parse_options(struct sock *sk, struct dccp_request_sock *dreq, opt_ptr += len; if (opt_ptr > opt_end) - goto out_invalid_option; + goto out_nonsensical_length; } /* @@ -283,6 +283,8 @@ ignore_option: if (mandatory) goto out_invalid_option; +out_nonsensical_length: + /* RFC 4340, 5.8: ignore option and all remaining option space */ return 0; out_invalid_option: |