mirror of https://git.ffmpeg.org/ffmpeg.git
avcodec/ac3dec: Check that the number of channels with dependant streams is valid
Fixes: left shift of 1 by 63 places cannot be represented in type 'long long' Fixes: out of array access Fixes: 7284/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_AC3_fuzzer-5767914968842240 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -1702,6 +1702,11 @@ dependent_frame:
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channel_layout |= custom_channel_map_locations[ch][1];
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channel_layout |= custom_channel_map_locations[ch][1];
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}
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}
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}
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}
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if (av_get_channel_layout_nb_channels(channel_layout) > EAC3_MAX_CHANNELS) {
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av_log(avctx, AV_LOG_ERROR, "Too many channels (%d) coded\n",
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av_get_channel_layout_nb_channels(channel_layout));
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return AVERROR_INVALIDDATA;
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}
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avctx->channel_layout = channel_layout;
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avctx->channel_layout = channel_layout;
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avctx->channels = av_get_channel_layout_nb_channels(channel_layout);
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avctx->channels = av_get_channel_layout_nb_channels(channel_layout);
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