From d0ac62440395566f8a68a7b6d8cb2038094aba7d Mon Sep 17 00:00:00 2001
From: Frederic L <frederic.laing.development@gmail.com>
Date: Sun, 3 Feb 2019 01:22:01 -0300
Subject: gl_shader_disk_cache: Check LZ4 size limit

Co-Authored-By: ReinUsesLisp <reinuseslisp@airmail.cc>
---
 src/video_core/renderer_opengl/gl_shader_disk_cache.cpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/video_core/renderer_opengl/gl_shader_disk_cache.cpp')

diff --git a/src/video_core/renderer_opengl/gl_shader_disk_cache.cpp b/src/video_core/renderer_opengl/gl_shader_disk_cache.cpp
index 67fcf3061..81882822b 100644
--- a/src/video_core/renderer_opengl/gl_shader_disk_cache.cpp
+++ b/src/video_core/renderer_opengl/gl_shader_disk_cache.cpp
@@ -53,6 +53,10 @@ ShaderCacheVersionHash GetShaderCacheVersionHash() {
 
 template <typename T>
 std::vector<u8> CompressData(const T* source, std::size_t source_size) {
+    if (source_size > LZ4_MAX_INPUT_SIZE) {
+        // Source size exceeds LZ4 maximum input size
+        return {};
+    }
     const auto source_size_int = static_cast<int>(source_size);
     const int max_compressed_size = LZ4_compressBound(source_size_int);
     std::vector<u8> compressed(max_compressed_size);
-- 
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