fortify-headers

commit 0825063aa6725f8ddf6661ead3263072d630870c
parent 8ff214efe64637a398901ca59c887539ad2dc3fc
Author: Steven Barth <steven@midlink.org>
Date:   Mon, 22 Jun 2015 14:36:16 +0200

unistd: fix signed / unsigned comparison in getgroups

Signed-off-by: Steven Barth <steven@midlink.org>

Diffstat:
M
include/unistd.h
 | 
2
+-

1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/unistd.h b/include/unistd.h
@@ -71,7 +71,7 @@ _FORTIFY_FN(getgroups) int getgroups(int __l, gid_t *__s)
 {
 	size_t __b = __builtin_object_size(__s, 0);
 
-	if (__l > __b / sizeof(gid_t))
+	if (__l < 0 || (size_t)__l > __b / sizeof(gid_t))
 		__builtin_trap();
 	return __orig_getgroups(__l, __s);
 }