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idcin: validate header parameters 

Avoids using unsupported parameters and signed integer overflows.
This commit is contained in:
Justin Ruggles 2012-08-01 15:53:20 -04:00
parent f7bf72a4a1
commit b0c96e0613
1 changed files with 19 additions and 0 deletions
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19
libavformat/idcin.c
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@ -68,6 +68,7 @@
* transmitting them to the video decoder
*/
#include "libavutil/imgutils.h"
#include "libavutil/intreadwrite.h"
#include "avformat.h"
#include "internal.h"
@ -153,6 +154,24 @@ static int idcin_read_header(AVFormatContext *s)
bytes_per_sample = avio_rl32(pb);
channels = avio_rl32(pb);
if (av_image_check_size(width, height, 0, s) < 0)
return AVERROR_INVALIDDATA;
if (sample_rate > 0) {
if (sample_rate < 14 || sample_rate > INT_MAX) {
av_log(s, AV_LOG_ERROR, "invalid sample rate: %u\n", sample_rate);
return AVERROR_INVALIDDATA;
}
if (bytes_per_sample < 1 || bytes_per_sample > 2) {
av_log(s, AV_LOG_ERROR, "invalid bytes per sample: %u\n",
bytes_per_sample);
return AVERROR_INVALIDDATA;
}
if (channels < 1 || channels > 2) {
av_log(s, AV_LOG_ERROR, "invalid channels: %u\n", channels);
return AVERROR_INVALIDDATA;
}
}
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);