Index: head/sys/kern/imgact_elf.c
===================================================================
--- head/sys/kern/imgact_elf.c
+++ head/sys/kern/imgact_elf.c
@@ -799,6 +799,11 @@
 				error = ENOEXEC;
 				goto ret;
 			}
+			if (interp != NULL) {
+				uprintf("Multiple PT_INTERP headers\n");
+				error = ENOEXEC;
+				goto ret;
+			}
 			interp_name_len = phdr[i].p_filesz;
 			if (phdr[i].p_offset > PAGE_SIZE ||
 			    interp_name_len > PAGE_SIZE - phdr[i].p_offset) {