Index: head/sys/kern/imgact_elf.c
===================================================================
--- head/sys/kern/imgact_elf.c
+++ head/sys/kern/imgact_elf.c
@@ -448,6 +448,13 @@
 	return (NULL);
 }
 
+static bool
+__elfN(phdr_in_zero_page)(const Elf_Ehdr *hdr)
+{
+	return (hdr->e_phoff <= PAGE_SIZE &&
+	    (u_int)hdr->e_phentsize * hdr->e_phnum <= PAGE_SIZE - hdr->e_phoff);
+}
+
 static int
 __elfN(check_header)(const Elf_Ehdr *hdr)
 {
@@ -811,8 +818,7 @@
 	}
 
 	/* Only support headers that fit within first page for now      */
-	if ((hdr->e_phoff > PAGE_SIZE) ||
-	    (u_int)hdr->e_phentsize * hdr->e_phnum > PAGE_SIZE - hdr->e_phoff) {
+	if (!__elfN(phdr_in_zero_page)(hdr)) {
 		error = ENOEXEC;
 		goto fail;
 	}
@@ -1088,9 +1094,7 @@
 	 * detected an ELF file.
 	 */
 
-	if ((hdr->e_phoff > PAGE_SIZE) ||
-	    (u_int)hdr->e_phentsize * hdr->e_phnum > PAGE_SIZE - hdr->e_phoff) {
-		/* Only support headers in first page for now */
+	if (!__elfN(phdr_in_zero_page)(hdr)) {
 		uprintf("Program headers not in the first page\n");
 		return (ENOEXEC);
 	}