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kern: reject shadow stack accesses in syscalls

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This commit is contained in:
Alula
2026-09-15 17:04:18 +02:00
parent 7e58f5fbae
commit dbfe192b2f
15 changed files with 60 additions and 29 deletions
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4
libraries/libmesosphere/source/svc/kern_svc_process_memory.cpp
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@@ -148,7 +148,7 @@ namespace ams::kern::svc {
/* Validate that the mapping is in range. */
auto &page_table = process->GetPageTable();
R_UNLESS(page_table.Contains(src_address, size), svc::ResultInvalidCurrentMemory());
R_UNLESS(page_table.CanContain(dst_address, size, KMemoryState_AliasCode), svc::ResultInvalidCurrentMemory());
R_UNLESS(page_table.CanContain(dst_address, size, KMemoryState_AliasCode), svc::ResultInvalidMemoryRegion());
/* Map the memory. */
R_TRY(page_table.MapCodeMemory(dst_address, src_address, size));
@@ -175,7 +175,7 @@ namespace ams::kern::svc {
/* Validate that the mapping is in range. */
auto &page_table = process->GetPageTable();
R_UNLESS(page_table.Contains(src_address, size), svc::ResultInvalidCurrentMemory());
R_UNLESS(page_table.CanContain(dst_address, size, KMemoryState_AliasCode), svc::ResultInvalidCurrentMemory());
R_UNLESS(page_table.CanContain(dst_address, size, KMemoryState_AliasCode), svc::ResultInvalidMemoryRegion());
/* Unmap the memory. */
R_TRY(page_table.UnmapCodeMemory(dst_address, src_address, size));