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guard against ADC buffer overrun (#1812)

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Matthew Kennedy 2020-09-21 02:37:51 -07:00 committed by GitHub
parent fccf0576bb
commit 2ee9e837bb
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1 changed files with 5 additions and 0 deletions
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5
firmware/hw_layer/adc/adc_inputs.cpp
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@ -346,6 +346,11 @@ bool AdcDevice::isHwUsed(adc_channel_e hwChannelIndex) const {
} }
void AdcDevice::enableChannel(adc_channel_e hwChannel) { void AdcDevice::enableChannel(adc_channel_e hwChannel) {
if (channelCount >= efi::size(values.adc_data)) {
firmwareError(OBD_PCM_Processor_Fault, "Too many ADC channels configured");
return;
}
int logicChannel = channelCount++; int logicChannel = channelCount++;
size_t channelAdcIndex = hwChannel - 1; size_t channelAdcIndex = hwChannel - 1;