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avcodec/pgssubdec: Free subtitle on error

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Fixes: Assertion failure
Fixes: 19753/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_PGSSUB_fuzzer-5688461843759104

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2020-01-04 21:58:28 +01:00
parent 8aa3c09c1b
commit b0a718923b
1 changed files with 4 additions and 1 deletions
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5
libavcodec/pgssubdec.c
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@ -691,8 +691,11 @@ static int decode(AVCodecContext *avctx, void *data, int *data_size,
ret = AVERROR_INVALIDDATA;
break;
}
if (ret < 0 && (avctx->err_recognition & AV_EF_EXPLODE))
if (ret < 0 && (avctx->err_recognition & AV_EF_EXPLODE)) {
avsubtitle_free(data);
*data_size = 0;
return ret;
}
buf += segment_length;
}