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avcodec/mediacodecdec_common: Check that the input to mediacodec_wrap_sw_audio_buffer() contains channel * sample_size

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Fixes: out of array access
no testcase

Found-by: Joshua Rogers <joshua@joshua.hu> with ZeroPath
Reviewed-by: Joshua Rogers <joshua@joshua.hu>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer
2025-10-31 23:31:40 +01:00
committed by Zhao Zhili
parent b478037423
commit 41a9c6ec5f
1 changed files with 6 additions and 0 deletions
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6
libavcodec/mediacodecdec_common.c
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@@ -385,6 +385,12 @@ static int mediacodec_wrap_sw_audio_buffer(AVCodecContext *avctx,
goto done;
}
if (info->size % (sample_size * avctx->ch_layout.nb_channels)) {
av_log(avctx, AV_LOG_ERROR, "input is not a multiple of channels * sample_size\n");
ret = AVERROR(EINVAL);
goto done;
}
frame->format = avctx->sample_fmt;
frame->sample_rate = avctx->sample_rate;
frame->nb_samples = info->size / (sample_size * avctx->ch_layout.nb_channels);