This bug was fixed in the package ifupdown - 0.7.47.2ubuntu4.3
---
ifupdown (0.7.47.2ubuntu4.3) trusty; urgency=medium
[ Martin Pitt ]
* Fix ifquery crash if interface state file does not exist yet.
(Closes: #810779, LP: #1532722)
-- Dariusz Gadomski Tue, 12 Jan 2016
11:05
This bug was fixed in the package ifupdown - 0.7.54ubuntu1.2
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ifupdown (0.7.54ubuntu1.2) wily; urgency=medium
[ Martin Pitt ]
* Fix ifquery crash if interface state file does not exist yet.
(Closes: #810779, LP: #1532722)
-- Dariusz Gadomski Tue, 12 Jan 2016
11:07:00 +0
** Changed in: ifupdown (Debian)
Status: Unknown => Fix Released
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https://bugs.launchpad.net/bugs/1532722
Title:
/sbin/ifup:11:__GI_strncpy:strncpy:do_interface:main
To manage n
Hello errors.ubuntu.com, or anyone else affected,
Accepted ifupdown into trusty-proposed. The package will build now and
be available at
https://launchpad.net/ubuntu/+source/ifupdown/0.7.47.2ubuntu4.3 in a few
hours, and then in the -proposed repository.
Please help us by testing this new package
This bug was fixed in the package ifupdown - 0.8.6ubuntu2
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ifupdown (0.8.6ubuntu2) xenial; urgency=medium
* Fix ifquery crash if interface state file does not exist yet.
(Closes: #810779, LP: #1532722)
-- Martin Pitt Tue, 12 Jan 2016 08:13:08
+0100
** Changed in: ifupdow
I sent a patch to the Debian bug and uploaded it to xenial.
** Changed in: ifupdown (Ubuntu)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1532722
Title:
** Bug watch added: Debian Bug tracker #810779
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=810779
** Also affects: ifupdown (Debian) via
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=810779
Importance: Unknown
Status: Unknown
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This should only happen when calling with --no-act, i. e. when being
called as "ifquery", as I don't think we regularly call ifup with --no-
act. It's also in the "if (cmds == iface_query)" code path.
When trying to recreate this on my amd64 laptop, gdb shows that
current_state gets initialized to
Thanks Brian, this was really helpful!
This stack trace pinpoints the particular strncpy() call in
do_interface:
if (current_state != NULL) {
strncpy(liface, current_state, 80);
liface is correct ("lo"), but current_state is bogus (0x1). We
I was manually able to retrace one of the crashes.
Stacktrace:
#0 __GI_strncpy (s1=0xbe86aa6f "", s1@entry=0xbe86aa70 "lo", s2=0x5 , n=n@entry=80) at strncpy.c:41
n4 =
c =
s = 0xbe86aa70 "lo"
#1 0x00013032 in strncpy (__len=80, __src=, __dest=0xbe86aa70
"lo") at /
Let me know if you need any more information.
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Title:
/sbin/ifup:11:__GI_strncpy:strncpy:do_interface:main
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