From 6522df7587eeacff1a91de29f9cf6d03f5401d59 Mon Sep 17 00:00:00 2001
From: Jakub Jelen <jjelen@redhat.com>
Date: Fri, 25 Oct 2019 17:10:52 +0200
Subject: [PATCH] pkcs15: Avoid null dereference in fuzzers

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=16617
---
 src/libopensc/pkcs15.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libopensc/pkcs15.c b/src/libopensc/pkcs15.c
index e313dcc8..68022697 100644
--- a/src/libopensc/pkcs15.c
+++ b/src/libopensc/pkcs15.c
@@ -2290,7 +2290,7 @@ sc_pkcs15_parse_unusedspace(const unsigned char *buf, size_t buflen, struct sc_p
 		/* If the path length is 0, it's a dummy path then don't add it.
 		 * If the path length isn't included (-1) then it's against the standard
 		 *   but we'll just ignore it instead of returning an error. */
-		if (path.count > 0) {
+		if (path.count > 0 && p15card->file_app) {
 			r = sc_pkcs15_make_absolute_path(&p15card->file_app->path, &path);
 			if (r < 0)
 				return r;