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avformat/ffmetadec: finalize AVBPrint on errors 

Fixes: memleak
Fixes: 26450/clusterfuzz-testcase-minimized-ffmpeg_dem_FFMETADATA_fuzzer-6249850443923456

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit a927128617)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2020-10-20 22:56:13 +02:00
parent c863e7e600
commit 30aea1efec
1 changed files with 6 additions and 2 deletions
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8
libavformat/ffmetadec.c
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@ -182,7 +182,7 @@ static int read_header(AVFormatContext *s)
AVStream *st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
goto nomem;
st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
st->codecpar->codec_id = AV_CODEC_ID_FFMETADATA;
@ -192,7 +192,7 @@ static int read_header(AVFormatContext *s)
AVChapter *ch = read_chapter(s);
if (!ch)
return AVERROR(ENOMEM);
goto nomem;
m = &ch->metadata;
} else
@ -208,6 +208,10 @@ static int read_header(AVFormatContext *s)
AV_TIME_BASE_Q);
return 0;
nomem:
av_bprint_finalize(&bp, NULL);
return AVERROR(ENOMEM);
}
static int read_packet(AVFormatContext *s, AVPacket *pkt)