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[Moshe Kaplan <1448835@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Program received signal SIGSEGV, Segmentation fault.

Crash found with CERT BFF
Running: convert crash.bie /dev/null

0xb7fcdddf in jbg_dec_getimage (s=0xbfff6420, plane=0x0) at jbig.c:2954
2954	  return s->lhp[s->d & 1][plane];

Stack Trace:
#0  0xffffffff in jbg_dec_getimage (s=0xbfff6420, plane=0x0) at jbig.c:2954
#1  0xffffffff in ReadJBIGImage (image_info=0x805e458, exception=0x80538d8) at coders/jbig.c:225
#2  0xffffffff in ReadImage (image_info=0x805a350, exception=0x80538d8) at magick/constitute.c:547
#3  0xffffffff in ReadImages (image_info=0x805a350, exception=0x80538d8) at magick/constitute.c:853
#4  0xffffffff in ConvertImageCommand (image_info=0x2, argc=0x3, argv=0x8054ce8, metadata=0x0, exception=0x80538d8) at wand/convert.c:622
#5  0xffffffff in MagickCommandGenesis (image_info=0x8056248, command=0x8048620 <ConvertImageCommand@plt>, argc=0x3, argv=0xbfffefe4, metadata=0x0, exception=0x80538d8) at wand/mogrify.c:168
#6  0x080486ec in main (argv=0xbfffefe4, argc=<optimized out>) at utilities/convert.c:81
#7  0x080486ec in main (argc=0x3, argv=0xbfffefe4) at utilities/convert.c:92

** Affects: jbigkit (Ubuntu)
     Importance: Undecided
         Status: New

** Attachment added: "crash.bie"
   https://bugs.launchpad.net/bugs/1448835/+attachment/4385195/+files/crash.bie

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https://bugs.launchpad.net/bugs/1448835

Title:
  Null Dereference in jbig.c:2954

Status in jbigkit package in Ubuntu:
  New

Bug description:
  Program received signal SIGSEGV, Segmentation fault.

  Crash found with CERT BFF
  Running: convert crash.bie /dev/null

  0xb7fcdddf in jbg_dec_getimage (s=0xbfff6420, plane=0x0) at jbig.c:2954
  2954	  return s->lhp[s->d & 1][plane];

  Stack Trace:
  #0  0xffffffff in jbg_dec_getimage (s=0xbfff6420, plane=0x0) at jbig.c:2954
  #1  0xffffffff in ReadJBIGImage (image_info=0x805e458, exception=0x80538d8) at coders/jbig.c:225
  #2  0xffffffff in ReadImage (image_info=0x805a350, exception=0x80538d8) at magick/constitute.c:547
  #3  0xffffffff in ReadImages (image_info=0x805a350, exception=0x80538d8) at magick/constitute.c:853
  #4  0xffffffff in ConvertImageCommand (image_info=0x2, argc=0x3, argv=0x8054ce8, metadata=0x0, exception=0x80538d8) at wand/convert.c:622
  #5  0xffffffff in MagickCommandGenesis (image_info=0x8056248, command=0x8048620 <ConvertImageCommand@plt>, argc=0x3, argv=0xbfffefe4, metadata=0x0, exception=0x80538d8) at wand/mogrify.c:168
  #6  0x080486ec in main (argv=0xbfffefe4, argc=<optimized out>) at utilities/convert.c:81
  #7  0x080486ec in main (argc=0x3, argv=0xbfffefe4) at utilities/convert.c:92

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