ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Mon Jul 13 19:10:59 2015 +0200| [697160366fd101898ef0caeac96234a64137eaad] | committer: Michael Niedermayer
avcodec/vp3: check current_frame before accessing it Fixes null pointer dereference Fixes: b15eb06e0111e94bc59123c86db7aff9_signal_sigsegv_a0500f_45_320vp3.nsv with allocation limit 536870912 Found-by: Samuel Groß, Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=697160366fd101898ef0caeac96234a64137eaad --- libavcodec/vp3.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavcodec/vp3.c b/libavcodec/vp3.c index 005f043..2492026 100644 --- a/libavcodec/vp3.c +++ b/libavcodec/vp3.c @@ -1947,6 +1947,8 @@ static int vp3_update_thread_context(AVCodecContext *dst, const AVCodecContext * } if (s != s1) { + if (!s->current_frame.f) + return AVERROR(ENOMEM); // init tables if the first frame hasn't been decoded if (!s->current_frame.f->data[0]) { int y_fragment_count, c_fragment_count; _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
