From 2aaf60b38d8be1e0b71cfbb7c1e13263188af201 Mon Sep 17 00:00:00 2001
From: dP <dp@dpointer.org>
Date: Thu, 18 Dec 2025 04:14:11 +0500
Subject: [PATCH] Fix potential infinite loop when unpacking zstd (from jgrpp)

---
 src/saveload/saveload.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/saveload/saveload.cpp b/src/saveload/saveload.cpp
index bcfcba852f..63ae1c1304 100644
--- a/src/saveload/saveload.cpp
+++ b/src/saveload/saveload.cpp
@@ -2829,6 +2829,7 @@ struct ZSTDLoadFilter : LoadFilter {
 			if (this->input.pos == this->input.size) {
 				this->input.size = this->chain->Read(this->fread_buf, sizeof(this->fread_buf));
 				this->input.pos = 0;
+				if (this->input.size == 0) break;
 			}
 
 			size_t ret = ZSTD_decompressStream(this->zstd, &output, &this->input);