D53347.id165083.diff
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D53347.id165083.diff
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	diff --git a/sys/netinet/udp_usrreq.c b/sys/netinet/udp_usrreq.c
	--- a/sys/netinet/udp_usrreq.c
	+++ b/sys/netinet/udp_usrreq.c
	@@ -1208,6 +1208,23 @@
	error = udp_v4mapped_pktinfo(cm, &src, inp, flags);
	if (error != 0)
	break;
	+ if (((flags & PRUS_IPV6) != 0) &&
	+ (cm->cmsg_level == IPPROTO_IPV6) &&
	+ (cm->cmsg_type == IPV6_TCLASS)) {
	+ int tclass;
	+
	+ if (cm->cmsg_len != CMSG_LEN(sizeof(int))) {
	+ error = EINVAL;
	+ break;
	+ }
	+ tclass = (int )CMSG_DATA(cm);
	+ if (tclass < -1 \|\| tclass > 255) {
	+ error = EINVAL;
	+ break;
	+ }
	+ if (tclass != -1)
	+ tos = (u_char)tclass;
	+ }
	#endif
	if (cm->cmsg_level != IPPROTO_IP)
	continue;