From e75e0eb39c1ac9a409f4c24533404652f08ef9a8 Mon Sep 17 00:00:00 2001
From: Joel Linn <jl@conductive.de>
Date: Mon, 21 Feb 2022 23:02:38 +0100
Subject: [PATCH] [Base] Fix `Semaphore::Create` invalid parameters

---
 src/xenia/base/threading_posix.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/xenia/base/threading_posix.cc b/src/xenia/base/threading_posix.cc
index 4e8fdfd51..fac86abc8 100644
--- a/src/xenia/base/threading_posix.cc
+++ b/src/xenia/base/threading_posix.cc
@@ -975,6 +975,10 @@ class PosixSemaphore : public PosixConditionHandle<Semaphore> {
 
 std::unique_ptr<Semaphore> Semaphore::Create(int initial_count,
                                              int maximum_count) {
+  if (initial_count < 0 || initial_count > maximum_count ||
+      maximum_count <= 0) {
+    return nullptr;
+  }
   return std::make_unique<PosixSemaphore>(initial_count, maximum_count);
 }