diff --git a/stand/common/load_elf.c b/stand/common/load_elf.c
--- a/stand/common/load_elf.c
+++ b/stand/common/load_elf.c
@@ -636,6 +636,12 @@
 		if (phdr[i].p_type != PT_LOAD)
 			continue;
 
+		if (phdr[i].p_memsz < phdr[i].p_filesz) {
+			printf("elf" __XSTRING(__ELF_WORD_SIZE)
+			    "_loadimage: invalid PT_LOAD segment\n");
+			goto out;
+		}
+
 		if (module_verbose >= MODULE_VERBOSE_FULL) {
 			printf("Segment: 0x%lx@0x%lx -> 0x%lx-0x%lx",
 			    (long)phdr[i].p_filesz, (long)phdr[i].p_offset,