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avformat/thp: Check av_get_packet() for failure not only for partial output

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Fixes null pointer dereference
Fixes: signal_sigsegv_db2c1f_3108_cov_163322880_pikmin2_opening1_partial.thp

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit f2579dbb4b)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2015-02-05 03:45:21 +01:00
parent 6252e9141b
commit 0f642909d8
1 changed files with 2 additions and 0 deletions
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2
libavformat/thp.c
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@ -184,6 +184,8 @@ static int thp_read_packet(AVFormatContext *s,
pkt->stream_index = thp->video_stream_index;
} else {
ret = av_get_packet(pb, pkt, thp->audiosize);
if (ret < 0)
return ret;
if (ret != thp->audiosize) {
av_free_packet(pkt);
return AVERROR(EIO);