From 3fa73d4f5fc284e72a2fc4af3f2b1d9f8c502d23 Mon Sep 17 00:00:00 2001
From: nikitalita <69168929+nikitalita@users.noreply.github.com>
Date: Fri, 17 Oct 2025 13:33:36 -0700
Subject: [PATCH] FileAccessMemory: prevent seeking past end of file

---
 core/io/file_access_memory.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/core/io/file_access_memory.cpp b/core/io/file_access_memory.cpp
index 61b3a444872..a9e5aece89e 100644
--- a/core/io/file_access_memory.cpp
+++ b/core/io/file_access_memory.cpp
@@ -98,12 +98,14 @@ bool FileAccessMemory::is_open() const {
 
 void FileAccessMemory::seek(uint64_t p_position) {
 	ERR_FAIL_NULL(data);
+	ERR_FAIL_COND(p_position > length);
 	pos = p_position;
 }
 
 void FileAccessMemory::seek_end(int64_t p_position) {
 	ERR_FAIL_NULL(data);
-	pos = length + p_position;
+	ERR_FAIL_COND((int64_t)length + p_position < 0);
+	seek(length + p_position);
 }
 
 uint64_t FileAccessMemory::get_position() const {