DHCPD 4.1.1-P1 Occasional Segfault
normelton at gmail.com
Wed Oct 5 11:55:57 UTC 2016
Hah, agreed. We actually used to run our own RPM of dhcpd. Might just
have to go back that way.
On Wed, Oct 5, 2016 at 5:36 AM, Glenn Satchell
<glenn.satchell at uniq.com.au> wrote:
> The root cause is poor code in a very old version.
> The simple fix is to run a newer version, I'm sure there are RPMs around
> for newer ones that don't have that problem.
> I think this might be the bug, fixed around 4.2.0. This is from the
> RELNOTES file distributed with the source.
> ! Two packets were found that cause a server to halt. The code
> has been updated to properly process or reject the packets as
> appropriate. Thanks to David Zych at University of Illinois
> for reporting this issue. [ISC-Bugs #24960]
> One CVE number for each class of packet.
> But if you're going to patch the code and recompile, just go to the newer
> On Wed, October 5, 2016 7:28 am, Norman Elton wrote:
>> We are running RHEL6's version of ISC dhcpd (based on 4.1.1-p1). Every
>> few months, one of our servers mysteriously segfaults:
>> dhcpd: segfault at 7f3ff02712c8 ip 00007f3ff02712c8 sp
>> 00007ffe16d0eb58 error 15 in libc-2.12.so[7f3ff0271000+2000]
>> What is the recommended way to begin finding a root cause?
>> Norman Elton
>> College of William & Mary
>> dhcp-users mailing list
>> dhcp-users at lists.isc.org
> dhcp-users mailing list
> dhcp-users at lists.isc.org
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