ffmpeg | branch: release/4.4 | Michael Niedermayer <mich...@niedermayer.cc> | Wed Mar 2 13:01:53 2022 +0100| [338444c0161e044f1608b4f2780c619f1297512a] | committer: Michael Niedermayer
avformat/mov: Disallow empty sidx It appears this is not allowed "Each Segment Index box documents how a (sub)segment is divided into one or more subsegments (which may themselves be further subdivided using Segment Index boxes)." Fixes: Null pointer dereference Fixes: Ticket9517 Reviewed-by: Paul B Mahol <one...@gmail.com> Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit 4419433d77278cb742944c4514be5f72a04103c0) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=338444c0161e044f1608b4f2780c619f1297512a --- libavformat/mov.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavformat/mov.c b/libavformat/mov.c index 4bd4750a21..46d8e628fd 100644 --- a/libavformat/mov.c +++ b/libavformat/mov.c @@ -5124,6 +5124,8 @@ static int mov_read_sidx(MOVContext *c, AVIOContext *pb, MOVAtom atom) avio_rb16(pb); // reserved item_count = avio_rb16(pb); + if (item_count == 0) + return AVERROR_INVALIDDATA; for (i = 0; i < item_count; i++) { int index; _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
