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memory: validate sparse uploads against the guest address-space owner

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nmzik
2026-09-29 20:32:56 +04:00
parent 650dc1e0af
commit f9fd400dbb
3 changed files with 40 additions and 24 deletions
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src/kernel/memory.cpp
-10
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@@ -964,16 +964,6 @@ static bool IsInPrtAperture(uint64_t address, uint64_t size = 1) {
}
bool TryReadSparseBacking(uint64_t vaddr, void* data, uint64_t size) {
std::vector<VirtualRanges::Range> ranges;
if (!g_virtual_ranges->QuerySpan(vaddr, size, &ranges)) {
return false;
}
if (std::any_of(ranges.begin(), ranges.end(), [](const auto& range) {
return !IsReservedRangeType(range.type) &&
!g_guest_address_space->BackingContains(range.start, range.size);
})) {
return false;
}
return g_guest_address_space->TryReadSparseBacking(vaddr, data, size);
}