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Don't OOB arguments #2294

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Don't OOB arguments #2294

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4 changes: 2 additions & 2 deletions extensions/dhooks/dynhooks_sourcepawn.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -689,7 +689,7 @@ void CDynamicHooksSourcePawn::UpdateParamsFromStruct(HookParamsStruct *params)
// Values of arguments stored in registers are saved after the stack arguments.
size_t registerOffset = stackSize;
size_t offset;
for (size_t i = 0; i < numArgs; i++)
for (size_t i = firstArg; i < numArgs; i++)
{
size_t size = argTypes[i].size;
// Only have to copy something if the plugin changed this parameter.
Expand All @@ -699,7 +699,7 @@ void CDynamicHooksSourcePawn::UpdateParamsFromStruct(HookParamsStruct *params)
offset = argTypes[i].custom_register == None ? stackOffset : registerOffset;

void *paramAddr = (void *)((intptr_t)params->newParams + offset);
void *stackAddr = callingConvention->GetArgumentPtr(i + firstArg, m_pDetour->m_pRegisters);
void *stackAddr = callingConvention->GetArgumentPtr(i, m_pDetour->m_pRegisters);
memcpy(stackAddr, paramAddr, size);
}

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