Index: user/cperciva/freebsd-update-build/patches/10.1-RELEASE/41-SA-16:15.sysarch
===================================================================
--- user/cperciva/freebsd-update-build/patches/10.1-RELEASE/41-SA-16:15.sysarch	(nonexistent)
+++ user/cperciva/freebsd-update-build/patches/10.1-RELEASE/41-SA-16:15.sysarch	(revision 307945)
@@ -0,0 +1,21 @@
+--- sys/amd64/amd64/sys_machdep.c.orig
++++ sys/amd64/amd64/sys_machdep.c
+@@ -608,6 +608,8 @@
+ 		largest_ld = uap->start + uap->num;
+ 		if (largest_ld > max_ldt_segment)
+ 			largest_ld = max_ldt_segment;
++		if (largest_ld < uap->start)
++			return (EINVAL);
+ 		i = largest_ld - uap->start;
+ 		mtx_lock(&dt_lock);
+ 		bzero(&((struct user_segment_descriptor *)(pldt->ldt_base))
+@@ -620,7 +622,8 @@
+ 		/* verify range of descriptors to modify */
+ 		largest_ld = uap->start + uap->num;
+ 		if (uap->start >= max_ldt_segment ||
+-		    largest_ld > max_ldt_segment)
++		    largest_ld > max_ldt_segment ||
++		    largest_ld < uap->start)
+ 			return (EINVAL);
+ 	}
+ 
Index: user/cperciva/freebsd-update-build/patches/10.2-RELEASE/24-SA-16:15.sysarch
===================================================================
--- user/cperciva/freebsd-update-build/patches/10.2-RELEASE/24-SA-16:15.sysarch	(nonexistent)
+++ user/cperciva/freebsd-update-build/patches/10.2-RELEASE/24-SA-16:15.sysarch	(revision 307945)
@@ -0,0 +1,21 @@
+--- sys/amd64/amd64/sys_machdep.c.orig
++++ sys/amd64/amd64/sys_machdep.c
+@@ -608,6 +608,8 @@
+ 		largest_ld = uap->start + uap->num;
+ 		if (largest_ld > max_ldt_segment)
+ 			largest_ld = max_ldt_segment;
++		if (largest_ld < uap->start)
++			return (EINVAL);
+ 		i = largest_ld - uap->start;
+ 		mtx_lock(&dt_lock);
+ 		bzero(&((struct user_segment_descriptor *)(pldt->ldt_base))
+@@ -620,7 +622,8 @@
+ 		/* verify range of descriptors to modify */
+ 		largest_ld = uap->start + uap->num;
+ 		if (uap->start >= max_ldt_segment ||
+-		    largest_ld > max_ldt_segment)
++		    largest_ld > max_ldt_segment ||
++		    largest_ld < uap->start)
+ 			return (EINVAL);
+ 	}
+ 
Index: user/cperciva/freebsd-update-build/patches/11.0-RELEASE/2-SA-16:15.sysarch
===================================================================
--- user/cperciva/freebsd-update-build/patches/11.0-RELEASE/2-SA-16:15.sysarch	(nonexistent)
+++ user/cperciva/freebsd-update-build/patches/11.0-RELEASE/2-SA-16:15.sysarch	(revision 307945)
@@ -0,0 +1,21 @@
+--- sys/amd64/amd64/sys_machdep.c.orig
++++ sys/amd64/amd64/sys_machdep.c
+@@ -608,6 +608,8 @@
+ 		largest_ld = uap->start + uap->num;
+ 		if (largest_ld > max_ldt_segment)
+ 			largest_ld = max_ldt_segment;
++		if (largest_ld < uap->start)
++			return (EINVAL);
+ 		i = largest_ld - uap->start;
+ 		mtx_lock(&dt_lock);
+ 		bzero(&((struct user_segment_descriptor *)(pldt->ldt_base))
+@@ -620,7 +622,8 @@
+ 		/* verify range of descriptors to modify */
+ 		largest_ld = uap->start + uap->num;
+ 		if (uap->start >= max_ldt_segment ||
+-		    largest_ld > max_ldt_segment)
++		    largest_ld > max_ldt_segment ||
++		    largest_ld < uap->start)
+ 			return (EINVAL);
+ 	}
+ 
Index: user/cperciva/freebsd-update-build/patches/11.0-RELEASE/2-SA-16:32.bhyve
===================================================================
--- user/cperciva/freebsd-update-build/patches/11.0-RELEASE/2-SA-16:32.bhyve	(nonexistent)
+++ user/cperciva/freebsd-update-build/patches/11.0-RELEASE/2-SA-16:32.bhyve	(revision 307945)
@@ -0,0 +1,17 @@
+--- usr.sbin/bhyve/vga.c.orig
++++ usr.sbin/bhyve/vga.c
+@@ -161,10 +161,10 @@
+ 	 */
+ 	struct {
+ 		uint8_t		dac_state;
+-		int		dac_rd_index;
+-		int		dac_rd_subindex;
+-		int		dac_wr_index;
+-		int		dac_wr_subindex;
++		uint8_t		dac_rd_index;
++		uint8_t		dac_rd_subindex;
++		uint8_t		dac_wr_index;
++		uint8_t		dac_wr_subindex;
+ 		uint8_t		dac_palette[3 * 256];
+ 		uint32_t	dac_palette_rgb[256];
+ 	} vga_dac;
Index: user/cperciva/freebsd-update-build/patches/9.3-RELEASE/49-SA-16:15.sysarch
===================================================================
--- user/cperciva/freebsd-update-build/patches/9.3-RELEASE/49-SA-16:15.sysarch	(nonexistent)
+++ user/cperciva/freebsd-update-build/patches/9.3-RELEASE/49-SA-16:15.sysarch	(revision 307945)
@@ -0,0 +1,21 @@
+--- sys/amd64/amd64/sys_machdep.c.orig
++++ sys/amd64/amd64/sys_machdep.c
+@@ -608,6 +608,8 @@
+ 		largest_ld = uap->start + uap->num;
+ 		if (largest_ld > max_ldt_segment)
+ 			largest_ld = max_ldt_segment;
++		if (largest_ld < uap->start)
++			return (EINVAL);
+ 		i = largest_ld - uap->start;
+ 		mtx_lock(&dt_lock);
+ 		bzero(&((struct user_segment_descriptor *)(pldt->ldt_base))
+@@ -620,7 +622,8 @@
+ 		/* verify range of descriptors to modify */
+ 		largest_ld = uap->start + uap->num;
+ 		if (uap->start >= max_ldt_segment ||
+-		    largest_ld > max_ldt_segment)
++		    largest_ld > max_ldt_segment ||
++		    largest_ld < uap->start)
+ 			return (EINVAL);
+ 	}
+