[FFmpeg-trac] #8186(undetermined:new): heap-use-after-free from libavutil/mem.c:231:5 in av_freep

FFmpeg trac at avcodec.org
Fri Sep 20 18:30:56 EEST 2019


#8186: heap-use-after-free from libavutil/mem.c:231:5 in av_freep
-------------------------------------+-------------------------------------
             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 libavutil/mem.c:231:5 in av_freep
 {{{
 SUMMARY: AddressSanitizer: heap-use-after-free
 ffmpeg/libavutil/mem.c:231:5 in a
 }}}
 How to reproduce:
 {{{
 % ./ffmpeg_g -t 0 -stream_loop 25 -y -i chris.mov -loglevel 0 -map 0 -c
 copy -c:v:213 h263p -c:s:20 pcm_s16be -vframes 87 -ar 22050 -b:v 572k
 -strict 3 tmp.mov

 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/8186>
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