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avformat/nutdec: fix packet end clearing 

The code was buggy, using the wrong variable, also it missed the case
where the packet become smaller due to sidedata/metadata being extracted
which left a few bytes uninitialized

Fixes use of uninitialized memory
Fixed: msan_uninit-mem_7f6abbe44530_6838_mewmew_vorbis_ssa.nut
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-01-10 00:32:39 +01:00
parent 77d2a1ca59
commit 7f9697aa11
1 changed files with 1 additions and 1 deletions
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2
libavformat/nutdec.c
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@ -1011,8 +1011,8 @@ static int decode_frame(NUTContext *nut, AVPacket *pkt, int frame_code)
if (ret != size) {
if (ret < 0)
return ret;
av_shrink_packet(pkt, nut->header_len[header_idx] + size);
}
av_shrink_packet(pkt, nut->header_len[header_idx] + ret);
pkt->stream_index = stream_id;
if (stc->last_flags & FLAG_KEY)