[FFmpeg-trac] #8154(undetermined:new): signed integer overflow in fftools/ffmpeg_opt.c

[FFmpeg]

#8154: signed integer overflow in fftools/ffmpeg_opt.c
-------------------------------------+-------------------------------------
             Reporter:  Suhwan       |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:  ubsan        |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 There is a signed integer overflow in fftools/ffmpeg_opt.c
 {{{
 fftools/ffmpeg_opt.c:2778:44: runtime error: signed integer overflow:
 30000299 * 1000 cannot be represented in type 'int'
 }}}
 How to reproduce:
 {{{
 % ./ffmpeg_g -loglevel 99 -y -r 45 -i audio-overhang.ogv -target dv -map 0
 -c copy -c: v:59 dvbsub -disposition: a:9 xwd -disposition: a:66 targa
 -vframes 98 -ab 815k -strict 2 output/tmp.xbin

 ffmpeg version N-94887-ge55018ee11 (git master)
 built on ubuntu 18.04 with clang-6 and UBSAN option.
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/8154>
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