This bug was fixed in the package dmg2img - 1.6.1-1ubuntu1
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dmg2img (1.6.1-1ubuntu1) lucid; urgency=low
* debian/rules: Add simple patchsys to CDBS packaging
* Fix segmentation fault caused by incorrect terminator block handling
- backported from upstream 1.6.2 (LP: #54615
Fixes incorrect handling of terminator blocks that results in
segmentation faults. Backported from upstream 1.6.2.
** Attachment added: "Debdiff for Lucid"
http://launchpadlibrarian.net/41918098/dmg2img_1.6.1-1ubuntu1.debdiff
** Patch removed: "Do not segfault when TERM block data pointer is N
I reported this to the upstream project and they have applied a bug-fix
and released version 1.6.2 that fixes this. Unfortunately for us the new
1.6.2 source package also includes a template debian/ directory with
example files and incomplete entries for the key files like control.
Therefore I don
** Changed in: dmg2img (Ubuntu)
Status: New => Triaged
** Changed in: dmg2img (Ubuntu)
Importance: Undecided => Medium
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dmg2img crashed with SIGSEGV in convert_char8()
https://bugs.launchpad.net/bugs/546154
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Bugs, w
Right now I'm using the attached patch to work around the issue,
although at this point I do not know if this is the correct solution, or
if the resulting image is 'good'.
** Patch added: "Do not segfault when TERM block data pointer is NULL"
http://launchpadlibrarian.net/41859903/do_not_segfa
Although the code path shows this, running with -V (extra verbose) mode
shows that the failure is when parsing the BT_TERM block:
...
[9] 75.00%
offset = 360 block_type = 0x7ffe
0x7ffe (in_addr=0 in_size=0 out_addr=673062912 out_size=0) comment +end
[10] 83.33%
offset = 400 block_type
The problem is in dmg2img.c, around line 560:
if (convert_char8((unsigned char *)parts[1].Data + 24) != 0)
Looking at the backtrace, gdb shows that 0x18 is passed to
convert_char8():
#0 0x08048d5a in convert_char8 (c=0x18 ) at
dmg2img.h:80
0x18 == 24 decimal, the value added to parts[1].Data.
** Attachment added: "CoreDump.gz"
http://launchpadlibrarian.net/41851703/CoreDump.gz
** Attachment added: "Dependencies.txt"
http://launchpadlibrarian.net/41851704/Dependencies.txt
** Attachment added: "Disassembly.txt"
http://launchpadlibrarian.net/41851705/Disassembly.txt
** Attachm
