https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7312
Summary: division by zero in cli/tap-iostat.c (CIDs 702378,
702379, 702380)
Product: Wireshark
Version: SVN
Platform: x86
OS/Version: All
Status: NEW
Severity: Normal
Priority: Low
Component: TShark
AssignedTo: bugzilla-admin@xxxxxxxxxxxxx
ReportedBy: wireshark@xxxxxxxxx
Build Information:
svn r42947, linux
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Dear all
there's three coverity defects about division by zero in ui/cli/tap-iostat.c,
function iostat_packet()
This can be triggered from the command line
martin@greta# ./tshark -z io,stat,0.2,AVG\(frame.number\)
Capturing on eth0
Floating point exception
it->num is 0, wireshark crashes in
parent->max_vals[it->colnum] =
MAX(parent->max_vals[it->colnum], it->counter/it->num);
(and similar for other data types)
My proposal for a fix is to not update parent->max_vals[it->colnum] when
it->num==0, see the attached patch.
Best regards,
Martin
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