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[esp32_ble_server] Validate descriptor write length before copying (#17626)

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Jonathan Swoboda
2026-07-16 15:32:44 -04:00
committed by GitHub
parent 09da2766ed
commit 6c8d0050ab
1 changed files with 4 additions and 0 deletions
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esphome/components/esp32_ble_server/ble_descriptor.cpp
+4
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@@ -77,6 +77,10 @@ void BLEDescriptor::gatts_event_handler(esp_gatts_cb_event_t event, esp_gatt_if_
case ESP_GATTS_WRITE_EVT: {
if (this->handle_ != param->write.handle)
break;
if (param->write.len > this->value_.attr_max_len) {
ESP_LOGE(TAG, "Size %d too large, must be no bigger than %d", param->write.len, this->value_.attr_max_len);
break;
}
this->value_.attr_len = param->write.len;
memcpy(this->value_.attr_value, param->write.value, param->write.len);
if (this->on_write_callback_) {