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idcin: validate header parameters
Avoids using unsupported parameters and signed integer overflows.
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f7bf72a4a1
commit
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@ -68,6 +68,7 @@
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* transmitting them to the video decoder
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*/
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#include "libavutil/imgutils.h"
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#include "libavutil/intreadwrite.h"
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#include "avformat.h"
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#include "internal.h"
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@ -153,6 +154,24 @@ static int idcin_read_header(AVFormatContext *s)
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bytes_per_sample = avio_rl32(pb);
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channels = avio_rl32(pb);
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if (av_image_check_size(width, height, 0, s) < 0)
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return AVERROR_INVALIDDATA;
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if (sample_rate > 0) {
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if (sample_rate < 14 || sample_rate > INT_MAX) {
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av_log(s, AV_LOG_ERROR, "invalid sample rate: %u\n", sample_rate);
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return AVERROR_INVALIDDATA;
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}
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if (bytes_per_sample < 1 || bytes_per_sample > 2) {
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av_log(s, AV_LOG_ERROR, "invalid bytes per sample: %u\n",
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bytes_per_sample);
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return AVERROR_INVALIDDATA;
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}
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if (channels < 1 || channels > 2) {
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av_log(s, AV_LOG_ERROR, "invalid channels: %u\n", channels);
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return AVERROR_INVALIDDATA;
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}
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}
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st = avformat_new_stream(s, NULL);
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if (!st)
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return AVERROR(ENOMEM);
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