[FFmpeg-trac] #8188(undetermined:new): heap-use-after-free from libavformat/mpegenc.c in mpeg_mux_write_packet

FFmpeg trac at avcodec.org
Fri Sep 20 19:25:56 EEST 2019


#8188: heap-use-after-free from libavformat/mpegenc.c in mpeg_mux_write_packet
-------------------------------------+-------------------------------------
             Reporter:  Suhwan       |                     Type:  defect
               Status:  new          |                 Priority:  important
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:  asan         |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 There is a heap-use-after-free from libavformat/mpegenc.c in
 mpeg_mux_write_packet.
 {{{
 SUMMARY: AddressSanitizer: heap-use-after-free
 ffmpeg/libavformat/mpegenc.c:1187:30 in mpeg_mux_write_packet
 }}}
 How to reproduce:
 {{{
 % ./ffmpeg_g -stream_loop 14 -y -r 115 -i Event20120111133101017.avi
 -loglevel 0 -map 0 -c copy -disposition:s:19 alias_pix tmp.mpeg

 ffmpeg version N-94982-gea673a0edb Copyright (c) 2000-2019 the FFmpeg
 developers
   built with clang version 6.0.0-1ubuntu2 (tags/RELEASE_600/final)
   configuration: --cc=clang --cxx=clang++ --ld=clang --enable-debug
 --toolchain=clang-asan
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/8188>
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