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avcodec/cfhd: Check transform type 

Fixes: out of array access
Fixes: 24823/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_CFHD_fuzzer-4855119863349248

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 2020-08-28 00:17:41 +02:00
parent b54c7797c5
commit 659658d08b
1 changed files with 4 additions and 0 deletions
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4
libavcodec/cfhd.c
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@ -490,6 +490,10 @@ static int cfhd_decode(AVCodecContext *avctx, void *data, int *got_frame,
av_log(avctx, AV_LOG_ERROR, "Invalid transform type\n");
ret = AVERROR(EINVAL);
break;
} else if (data == 1) {
av_log(avctx, AV_LOG_ERROR, "unsupported transform type\n");
ret = AVERROR_PATCHWELCOME;
break;
}
s->transform_type = data;
av_log(avctx, AV_LOG_DEBUG, "Transform type %"PRIu16"\n", data);