[FFmpeg-trac] #7989(undetermined:new): heap-buffer-overflow at apng_do_inverse_blend in libavcodec/pngenc.c

[FFmpeg]

#7989: heap-buffer-overflow at apng_do_inverse_blend in libavcodec/pngenc.c
-------------------------------------+-------------------------------------
             Reporter:  Suhwan       |                     Type:  defect
               Status:  new          |                 Priority:  important
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:  enc          |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 There's a heap-buffer-overflow at apng_do_inverse_blend in
 libavcodec/pngenc.c
 q

 How to reproduce:
 {{{
 % ffmpeg_g -y -r 73 -i tmp.pbm -map 0 -c:v apng -c:a pcm_dvd
 -disposition:a ac3_fixed -disposition:s:13 ac3_fixed -ac 16 tmp_.pgm

 ffmpeg version : N-94163-g664a27ea40

 built with clang version 9.0.0 (https://github.com/llvm/llvm-project.git
 442a120567a4bc6c59bc754f9edabfb770086f36)

 }}}

 Patches should be submitted to the ffmpeg-devel mailing list and not this
 bug tracker.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7989>
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