From 55ed461ae59bb2daa5d7de26989ec3b93b3ea613 Mon Sep 17 00:00:00 2001
From: gaoshutao <1779227906@qq.com>
Date: Tue, 2 Sep 2025 16:27:10 +0800
Subject: [PATCH] fix:nullptr check for uncompress2

---
 uncompr.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/uncompr.c b/uncompr.c
index 5e256663b..ff2d109ff 100644
--- a/uncompr.c
+++ b/uncompr.c
@@ -32,6 +32,14 @@ int ZEXPORT uncompress2(Bytef *dest, uLongf *destLen, const Bytef *source,
     uLong len, left;
     Byte buf[1];    /* for detection of incomplete stream when *destLen == 0 */
 
+    if (source == NULL || sourceLen == NULL || destLen == NULL) {
+        return Z_STREAM_ERROR;
+    }
+
+    if (*destLen > 0 && dest == NULL) {
+        return Z_STREAM_ERROR;
+    }
+
     len = *sourceLen;
     if (*destLen) {
         left = *destLen;