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Index: head/sys/dev/hyperv/netvsc/hv_net_vsc.c
===================================================================
--- head/sys/dev/hyperv/netvsc/hv_net_vsc.c
+++ head/sys/dev/hyperv/netvsc/hv_net_vsc.c
@@ -816,7 +816,12 @@
{
const struct hn_nvs_hdr *hdr;
+ if (VMBUS_CHANPKT_DATALEN(pkt) < sizeof(*hdr)) {
+ if_printf(sc->hn_ifp, "invalid nvs notify\n");
+ return;
+ }
hdr = VMBUS_CHANPKT_CONST_DATA(pkt);
+
if (hdr->nvs_type == HN_NVS_TYPE_TXTBL_NOTE) {
/* Useless; ignore */
return;

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