From 733f57da5029fa4c9af3a925199751e4a35dfd84 Mon Sep 17 00:00:00 2001 From: Kevin Ahrendt Date: Tue, 13 Jan 2026 19:42:36 +0000 Subject: [PATCH] [i2s_audio] Bugfix: Buffer overflow in software volume control (#13190) --- esphome/components/i2s_audio/speaker/i2s_audio_speaker.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/esphome/components/i2s_audio/speaker/i2s_audio_speaker.cpp b/esphome/components/i2s_audio/speaker/i2s_audio_speaker.cpp index 53e378c41e..c934d12d65 100644 --- a/esphome/components/i2s_audio/speaker/i2s_audio_speaker.cpp +++ b/esphome/components/i2s_audio/speaker/i2s_audio_speaker.cpp @@ -340,8 +340,8 @@ void I2SAudioSpeaker::speaker_task(void *params) { const uint32_t read_delay = (this_speaker->current_stream_info_.frames_to_microseconds(frames_written) / 1000) / 2; - uint8_t *new_data = transfer_buffer->get_buffer_end(); // track start of any newly copied bytes size_t bytes_read = transfer_buffer->transfer_data_from_source(pdMS_TO_TICKS(read_delay)); + uint8_t *new_data = transfer_buffer->get_buffer_end() - bytes_read; if (bytes_read > 0) { if (this_speaker->q15_volume_factor_ < INT16_MAX) {