IEEE 802.15.4: Add a bounds check

This avoids to have cp (current pointer on packet data) > ndo->ndo_snapend
in hex_and_ascii_print(), via ndo_default_print(), via ND_DEFAULTPRINT(),
in some cases.

diff --git a/print-802_15_4.c b/print-802_15_4.c
index 3d307ffd02ac9b2aae020a0997642ada0c3118d1..5687d4556d891b2b780818e4a6ea030171430452 100644 (file)
--- a/print-802_15_4.c
+++ b/print-802_15_4.c
@@ -2021,6 +2021,7 @@ ieee802_15_4_std_frames(netdissect_options *ndo,
                if (len < 0) {
                        return 0;
                }
                if (len < 0) {
                        return 0;
                }

+               ND_TCHECK_LEN(p, len);

                p += len;
                caplen -= len;
        } else {
                p += len;
                caplen -= len;
        } else {