diff -r 6a6462ce8a08 -r 297c6c8be2d1 librazor/razor.c
--- a/librazor/razor.c	Thu Oct 01 20:02:12 2009 +0100
+++ b/librazor/razor.c	Thu Oct 01 20:02:23 2009 +0100
@@ -143,6 +143,14 @@
 		return -1;
 	}
 
+	if (file->size < sizeof *file->header ||
+	    file->header->magic != RAZOR_MAGIC ||
+	    file->header->version != RAZOR_VERSION) {
+		razor_file_free_contents(file->header, file->size);
+		free(file);
+		return -1;
+	}
+
 	if (set->mapped_files == NULL) {
 		for (i = 0; i < ARRAY_SIZE(razor_sections); i++) {
 			array = (void *) set + razor_sections[i].offset;