X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/546558eabd81cfc36a81a4df728fdfea0d83b41a..a24cccfd4abcda51db9f73f46d425c7c1e357a87:/print-vjc.c

diff --git a/print-vjc.c b/print-vjc.c
index 4fadc8a1..44bdb1fc 100644
--- a/print-vjc.c
+++ b/print-vjc.c
@@ -89,6 +89,7 @@ vjc_print(netdissect_options *ndo, const u_char *bp, u_short proto _U_)
 	int i;
 
 	ndo->ndo_protocol = "vjc";
+	ND_TCHECK_1(bp);
 	switch (EXTRACT_U_1(bp) & 0xf0) {
 	case TYPE_IP:
 		if (ndo->ndo_eflag)
@@ -102,12 +103,15 @@ vjc_print(netdissect_options *ndo, const u_char *bp, u_short proto _U_)
 		if (ndo->ndo_eflag)
 			ND_PRINT("(vjc type=compressed TCP) ");
 		for (i = 0; i < 8; i++) {
+			ND_TCHECK_1(bp + 1);
 			if (EXTRACT_U_1(bp + 1) & (0x80 >> i))
 				ND_PRINT("%c", "?CI?SAWU"[i]);
 		}
 		if (EXTRACT_U_1(bp + 1))
 			ND_PRINT(" ");
+		ND_TCHECK_1(bp + 2);
 		ND_PRINT("C=0x%02x ", EXTRACT_U_1(bp + 2));
+		ND_TCHECK_2(bp + 3);
 		ND_PRINT("sum=0x%04x ", *(const u_short *)(bp + 3));
 		return -1;
 	case TYPE_ERROR:
@@ -119,4 +123,7 @@ vjc_print(netdissect_options *ndo, const u_char *bp, u_short proto _U_)
 			ND_PRINT("(vjc type=0x%02x) ", EXTRACT_U_1(bp) & 0xf0);
 		return -1;
 	}
+
+trunc:
+	return -1;
 }