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avcodec/utils: Fix memleak with subtitles and sidedata

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Fixes: 454/fuzz-3-ffmpeg_SUBTITLE_AV_CODEC_ID_MOV_TEXT_fuzzer

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-01-25 12:56:52 +01:00
parent 037bb4021c
commit ad7a3f5294
1 changed files with 7 additions and 5 deletions
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12
libavcodec/utils.c
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@ -2714,13 +2714,19 @@ int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
avctx->pkt_timebase, ms);
}
if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB)
sub->format = 0;
else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
sub->format = 1;
for (i = 0; i < sub->num_rects; i++) {
if (sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
av_log(avctx, AV_LOG_ERROR,
"Invalid UTF-8 in decoded subtitles text; "
"maybe missing -sub_charenc option\n");
avsubtitle_free(sub);
return AVERROR_INVALIDDATA;
ret = AVERROR_INVALIDDATA;
break;
}
}
@ -2731,10 +2737,6 @@ int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
av_packet_unref(&pkt_recoded);
}
if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB)
sub->format = 0;
else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
sub->format = 1;
avctx->internal->pkt = NULL;
}