From ccfb2b03f72a852fc332bdb2cc01b77562fbb7cc Mon Sep 17 00:00:00 2001
From: kalaposfos13 <153381648+kalaposfos13@users.noreply.github.com>
Date: Tue, 17 Jun 2025 19:36:56 +0200
Subject: [PATCH] Return ENOMEM if len exceeds the available space in
 sceKernelMapNamedDirectMemory

---
 src/core/libraries/kernel/memory.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/core/libraries/kernel/memory.cpp b/src/core/libraries/kernel/memory.cpp
index ea3998ddd..860e7ba0f 100644
--- a/src/core/libraries/kernel/memory.cpp
+++ b/src/core/libraries/kernel/memory.cpp
@@ -194,6 +194,10 @@ int PS4_SYSV_ABI sceKernelMapNamedDirectMemory(void** addr, u64 len, int prot, i
     const auto map_flags = static_cast<Core::MemoryMapFlags>(flags);
 
     auto* memory = Core::Memory::Instance();
+    if (memory->GetTotalDirectSize() < len) {
+        LOG_ERROR(Kernel_Vmm, "Length is too big!");
+        return ORBIS_KERNEL_ERROR_ENOMEM;
+    }
     const auto ret =
         memory->MapMemory(addr, in_addr, len, mem_prot, map_flags, Core::VMAType::Direct, name,
                           false, directMemoryStart, alignment);