ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Thu Jan 21 15:39:43 2016 +0100| [b65efbc0f4195421c15d2a6c228d331eec5b31c3] | committer: Michael Niedermayer
avcodec/mpegvideo_enc: Check for integer overflow in ff_mpv_reallocate_putbitbuffer() Fixes assertion failure Fixes: 6568d187979ce17878b6fe5fbbb89142/signal_sigabrt_7ffff6ae7cb7_7176_564bbc6741bdcf907f5c4e685c9a77a2.mpg Found-by: 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=b65efbc0f4195421c15d2a6c228d331eec5b31c3 --- libavcodec/mpegvideo_enc.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c index 55550d5..af5b85f 100644 --- a/libavcodec/mpegvideo_enc.c +++ b/libavcodec/mpegvideo_enc.c @@ -2845,6 +2845,11 @@ int ff_mpv_reallocate_putbitbuffer(MpegEncContext *s, size_t threshold, size_t s uint8_t *new_buffer = NULL; int new_buffer_size = 0; + if ((s->avctx->internal->byte_buffer_size + size_increase) >= INT_MAX/8) { + av_log(s->avctx, AV_LOG_ERROR, "Cannot reallocate putbit buffer\n"); + return AVERROR(ENOMEM); + } + av_fast_padded_malloc(&new_buffer, &new_buffer_size, s->avctx->internal->byte_buffer_size + size_increase); if (!new_buffer) _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
