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avcodec/exr: Check for duplicate channel index

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Fixes: Out of memory
Fixes: 11582/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_EXR_fuzzer-5730204559867904

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2018-12-25 18:41:58 +01:00
parent b640227832
commit f9728feaf9
1 changed files with 5 additions and 0 deletions
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5
libavcodec/exr.c
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@ -1463,6 +1463,11 @@ static int decode_header(EXRContext *s, AVFrame *frame)
}
s->pixel_type = current_pixel_type;
s->channel_offsets[channel_index] = s->current_channel_offset;
} else if (channel_index >= 0) {
av_log(s->avctx, AV_LOG_ERROR,
"Multiple channels with index %d.\n", channel_index);
ret = AVERROR_INVALIDDATA;
goto fail;
}
s->channels = av_realloc(s->channels,