From bed5a7bb0a1e2d7b29c0cd6d7354bfe419a02279 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martti=20Rannanj=C3=A4rvi?= <martti.rannanjarvi@iki.fi>
Date: Mon, 2 Dec 2024 01:33:48 +0200
Subject: [PATCH] formats: Do not use memcpy with NULL source or destination in
 memread_buf()

---
 src/formats/internal/memreader.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/formats/internal/memreader.c b/src/formats/internal/memreader.c
index 5ea3bd88b..b432ec92f 100644
--- a/src/formats/internal/memreader.c
+++ b/src/formats/internal/memreader.c
@@ -49,7 +49,7 @@ void memreader_close(memreader *reader) {
 }
 
 int memread_buf(memreader *reader, char *buf, int len) {
-    if(reader->pos + len > reader->len) {
+    if(reader->pos + len > reader->len || buf == NULL || reader->buf == NULL) {
         return 0;
     }
     memcpy(buf, reader->buf + reader->pos, len);