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Bug 749919 - Hang / undefined-behavior, signed integer overflow ranges.c:633
Hang / undefined-behavior, signed integer overflow ranges.c:633
Status: RESOLVED FIXED
Product: Gnumeric
Classification: Applications
Component: import/export MS Excel (tm)
git master
Other Linux
: Normal normal
: ---
Assigned To: Jody Goldberg
Jody Goldberg
http://jutaky.com/fuzzing/gnumeric_ca...
Depends on:
Blocks:
 
 
Reported: 2015-05-26 17:16 UTC by jutaky
Modified: 2015-05-28 12:26 UTC
See Also:
GNOME target: ---
GNOME version: ---


Description jutaky 2015-05-26 17:16:18 UTC 
Git versions of gtk, glib, goffice, gnumeric, libgsf and libxml2.

Test case: http://jutaky.com/fuzzing/gnumeric_case_26652_3899.xls

$ ssconvert gnumeric_case_26652_3899.xls /tmp/out.gnumeric

ranges.c:633:9: runtime error: signed integer overflow: 1759275499 - -1581722716 cannot be represented in type 'int'
SUMMARY: AddressSanitizer: undefined-behavior ranges.c:633 

Also, when the test case is opened using Gnumeric (release version), Gnumeric appears to hang.

CPU usage is constant 100% until killed.

--
Juha Kylmänen
Comment 1 Morten Welinder 2015-05-28 12:26:03 UTC 
This problem has been fixed in our software repository. The fix will go into the next software release. Once that release is available, you may want to check for a software upgrade provided by your Linux distribution.