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-rw-r--r--print-sflow.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/print-sflow.c b/print-sflow.c
index 68bca017..f17f1ce9 100644
--- a/print-sflow.c
+++ b/print-sflow.c
@@ -872,6 +872,13 @@ sflow_print(netdissect_options *ndo,
tptr = pptr;
tlen = len;
sflow_datagram = (const struct sflow_datagram_t *)pptr;
+ if (len < sizeof(struct sflow_datagram_t)) {
+ ND_PRINT("sFlowv%u", GET_BE_U_4(sflow_datagram->version));
+ ND_PRINT(" [length %u < %" PRIsize "]",
+ len, sizeof(struct sflow_datagram_t));
+ nd_print_invalid(ndo);
+ return;
+ }
ND_TCHECK_SIZE(sflow_datagram);
/*