From: Michael Niedermayer <[email protected]> dv: Fix null pointer dereference due to ach=0
Fixes part2 of CVE-2011-3929 Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Reviewed-by: Roman Shaposhnik <[email protected]> Signed-off-by: Michael Niedermayer <[email protected]> Signed-off-by: Alex Converse <[email protected]> --- libavformat/dv.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/libavformat/dv.c b/libavformat/dv.c index 4896b0a..bde8ca3 100644 --- a/libavformat/dv.c +++ b/libavformat/dv.c @@ -343,7 +343,8 @@ int avpriv_dv_produce_packet(DVDemuxContext *c, AVPacket *pkt, c->audio_pkt[i].pts = c->abytes * 30000*8 / c->ast[i]->codec->bit_rate; ppcm[i] = c->audio_buf[i]; } - dv_extract_audio(buf, ppcm, c->sys); + if (c->ach) + dv_extract_audio(buf, ppcm, c->sys); /* We work with 720p frames split in half, thus even frames have * channels 0,1 and odd 2,3. */ -- 1.7.7.3 _______________________________________________ libav-devel mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-devel
