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Added validation of absolute memory address to the validator

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kobalicek
2017-02-03 17:50:51 +01:00
parent 13a5105fe0
commit 814cf62a85
1 changed files with 7 additions and 0 deletions
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src/asmjit/x86/x86inst.cpp
+7
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@@ -3821,6 +3821,13 @@ ASMJIT_FAVOR_SIZE Error X86Inst::validate(
if (!indexType && !m.getOffsetLo32())
memFlags |= X86Inst::kMemOpBaseOnly;
}
else {
// Base is an address, make sure that the address doesn't overflow 32-bit
// integer (either int32_t or uint32_t) in 32-bit targets.
int64_t offset = m.getOffset();
if (archMask == X86Inst::kArchMaskX86 && !Utils::isInt32(offset) && !Utils::isUInt32(offset))
return DebugUtils::errored(kErrorInvalidAddress);
}
if (indexType) {
if (ASMJIT_UNLIKELY((vd->allowedMemIndexRegs & (1U << indexType)) == 0))