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kern: don't allow mapping device pages as executable on abi 26.x+

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Alula
2026-03-18 00:51:29 +01:00
parent 4e653f67e5
commit b29dbeae3d
3 changed files with 13 additions and 2 deletions
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5
libraries/libmesosphere/include/mesosphere/kern_k_page_table_base.hpp
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@@ -200,6 +200,7 @@ namespace ams::kern {
bool m_is_kernel;
bool m_enable_aslr;
bool m_enable_device_address_space_merge;
bool m_allowed_exec_device_mapping;
KMemoryBlockSlabManager *m_memory_block_slab_manager;
KBlockInfoManager *m_block_info_manager;
KResourceLimit *m_resource_limit;
@@ -217,7 +218,7 @@ namespace ams::kern {
m_alias_code_region_end(Null<KProcessAddress>), m_code_region_start(Null<KProcessAddress>), m_code_region_end(Null<KProcessAddress>),
m_max_heap_size(), m_mapped_physical_memory_size(), m_mapped_unsafe_physical_memory(), m_mapped_insecure_memory(), m_mapped_ipc_server_memory(), m_alias_region_extra_size(),
m_general_lock(), m_map_physical_memory_lock(), m_device_map_lock(), m_impl(util::ConstantInitialize), m_memory_block_manager(util::ConstantInitialize),
m_allocate_option(), m_address_space_width(), m_is_kernel(), m_enable_aslr(), m_enable_device_address_space_merge(),
m_allocate_option(), m_address_space_width(), m_is_kernel(), m_enable_aslr(), m_enable_device_address_space_merge(), m_allowed_exec_device_mapping(),
m_memory_block_slab_manager(), m_block_info_manager(), m_resource_limit(), m_cached_physical_linear_region(), m_cached_physical_heap_region(),
m_heap_fill_value(), m_ipc_fill_value(), m_stack_fill_value()
{
@@ -520,6 +521,8 @@ namespace ams::kern {
size_t GetAliasCodeDataSize() const;
u32 GetAllocateOption() const { return m_allocate_option; }
void AllowDeviceMappingOfExecPages() { m_allowed_exec_device_mapping = true; }
public:
static ALWAYS_INLINE KVirtualAddress GetLinearMappedVirtualAddress(KPhysicalAddress addr) {
return KMemoryLayout::GetLinearVirtualAddress(addr);