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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>
(cherry picked from commit 659658d08b)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2020-08-28 00:17:41 +02:00
parent 71b1422ee9
commit 0ce90738fc
1 changed files with 4 additions and 0 deletions
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4
libavcodec/cfhd.c
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@ -444,6 +444,10 @@ static int cfhd_decode(AVCodecContext *avctx, void *data, int *got_frame,
avpriv_report_missing_feature(avctx, "Transform type of %"PRIu16, data); avpriv_report_missing_feature(avctx, "Transform type of %"PRIu16, data);
ret = AVERROR_PATCHWELCOME; ret = AVERROR_PATCHWELCOME;
break; break;
} else if (data == 1) {
av_log(avctx, AV_LOG_ERROR, "unsupported transform type\n");
ret = AVERROR_PATCHWELCOME;
break;
} }
av_log(avctx, AV_LOG_DEBUG, "Transform-type? %"PRIu16"\n", data); av_log(avctx, AV_LOG_DEBUG, "Transform-type? %"PRIu16"\n", data);
} else if (abstag >= 0x4000 && abstag <= 0x40ff) { } else if (abstag >= 0x4000 && abstag <= 0x40ff) {