group.of.nepali.translators team mailing list archive

[Marc Deslauriers <marc.deslauriers@xxxxxxxxxxxxx>]

Thanks for reporting this issue. Looks like we're possibly missing a
couple of commits:

https://github.com/ImageMagick/ImageMagick6/commit/e5e87c087ed48db886be0ff3aff4041d38218192
https://github.com/ImageMagick/ImageMagick6/commit/f5d04fc678f67984a1f8c1008dc8eac8ee7e3629

I'll prepare a regression fix.


** Also affects: imagemagick (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Also affects: imagemagick (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Also affects: imagemagick (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Changed in: imagemagick (Ubuntu Bionic)
       Status: New => Fix Released

** Changed in: imagemagick (Ubuntu)
       Status: New => Fix Released

** Changed in: imagemagick (Ubuntu Trusty)
       Status: New => In Progress

** Changed in: imagemagick (Ubuntu Xenial)
       Status: New => In Progress

** Changed in: imagemagick (Ubuntu Trusty)
     Assignee: (unassigned) => Marc Deslauriers (mdeslaur)

** Changed in: imagemagick (Ubuntu Xenial)
     Assignee: (unassigned) => Marc Deslauriers (mdeslaur)

** Changed in: imagemagick (Ubuntu Bionic)
     Assignee: (unassigned) => Marc Deslauriers (mdeslaur)

** Information type changed from Public to Public Security

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https://bugs.launchpad.net/bugs/1793485

Title:
  segfault in png to gif conversion

Status in imagemagick package in Ubuntu:
  Fix Released
Status in imagemagick source package in Trusty:
  In Progress
Status in imagemagick source package in Xenial:
  In Progress
Status in imagemagick source package in Bionic:
  Fix Released

Bug description:
  Regression between 8:6.8.9.9-7ubuntu5.9 and 8:6.8.9.9-7ubuntu5.12.

  Test case:
  1. Download the attached pngs.
  2. Run:
  /usr/bin/convert -limit memory 512MiB -limit map 0MiB -limit file 10 -delay 16 -loop 0 -coalesce -deconstruct ./*.png ./output.gif

  Expected result:
  Process finishes with resulting output.gif.

  Actual result:
  Process is aborted with SIGSEGV:

  Other information:
  In my tests looks like it has been introduced in 8:6.8.9.9-7ubuntu5.11 and does not occur on Bionic.

  Stack trace:
  #0  EncodeImage (image_info=0x645c40, data_size=<optimized out>, 
      image=0x636890) at ../../coders/gif.c:676
  #1  WriteGIFImage (image_info=0x640700, image=0x636890)
      at ../../coders/gif.c:1905
  #2  0x00007ffff79a5f0f in WriteImage (image_info=image_info@entry=0x618680, 
      image=image@entry=0x62cb30) at ../../magick/constitute.c:1184
  #3  0x00007ffff79a684f in WriteImages (image_info=image_info@entry=0x60fcd0, 
      images=<optimized out>, images@entry=0x62cb30, filename=<optimized out>, 
      exception=exception@entry=0x602ea0) at ../../magick/constitute.c:1335
  #4  0x00007ffff763e84e in ConvertImageCommand (image_info=0x60fcd0, argc=19, 
      argv=0x6143b0, metadata=0x0, exception=0x602ea0)
      at ../../wand/convert.c:3215
  #5  0x00007ffff76ab527 in MagickCommandGenesis (
      image_info=image_info@entry=0x60aab0, 
      command=0x4007f0 <ConvertImageCommand@plt>, argc=argc@entry=19, 
      argv=argv@entry=0x7fffffffdc68, metadata=metadata@entry=0x0, 
      exception=exception@entry=0x602ea0) at ../../wand/mogrify.c:168
  #6  0x0000000000400877 in ConvertMain (argv=0x7fffffffdc68, argc=19)
      at ../../utilities/convert.c:81
  #7  main (argc=19, argv=0x7fffffffdc68) at ../../utilities/convert.c:92

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