diff options
Diffstat (limited to 'contrib/tcpdump/print-isoclns.c')
| -rw-r--r-- | contrib/tcpdump/print-isoclns.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/contrib/tcpdump/print-isoclns.c b/contrib/tcpdump/print-isoclns.c index 37ecf0b..a35ac95 100644 --- a/contrib/tcpdump/print-isoclns.c +++ b/contrib/tcpdump/print-isoclns.c @@ -1905,6 +1905,9 @@ static int isis_print (const u_int8_t *p, u_int length) tlv_type, tlv_len); + if (tlv_len == 0) /* something is malformed */ + break; + /* now check if we have a decoder otherwise do a hexdump at the end*/ switch (tlv_type) { case ISIS_TLV_AREA_ADDR: @@ -1935,7 +1938,7 @@ static int isis_print (const u_int8_t *p, u_int length) break; case ISIS_TLV_ISNEIGH_VARLEN: - if (!TTEST2(*tptr, 1)) + if (!TTEST2(*tptr, 1) || tmp < 3) /* min. TLV length */ goto trunctlv; lan_alen = *tptr++; /* LAN adress length */ tmp --; |
