Subject: Add another bounds check: OSS-FUZZ issue 2242
Origin: FILE5_31-21-g55cb70a2 <https://github.com/file/file/commit/FILE5_31-21-g55cb70a2>
Upstream-Author: Christos Zoulas <christos@zoulas.com>
Date: Mon Jun 19 18:30:25 2017 +0000

--- a/src/softmagic.c
+++ b/src/softmagic.c
@@ -1199,7 +1199,7 @@
 			const char *end;
 			size_t lines, linecnt, bytecnt;
 
-			if (s == NULL) {
+			if (s == NULL || nbytes < offset) {
 				ms->search.s_len = 0;
 				ms->search.s = NULL;
 				return 0;