FreeTDS Development Group

[Robert Gonzalez <robert AT robert-gonzalez.com>]

Not sure if it is any help to you, but the very last comment in the PHP Bug
Report #44872 mentions a possible workaround to prevent that error. Seems
like that error has been around for a long time. I've never experienced it
personally and have been running FreeTDS to talk to MSSQL Servers for about
a year and a half now on most versions of PHP 5.2.

http://bugs.php.net/bug.php?id=44872

On Tue, Apr 27, 2010 at 8:38 AM, Brian Johnson <bronson21 AT hotmail.com>wrote:

>
> Hello list,
> I am having a problem when using FreeTDS and am curious if anyone else has
> encountered this at some point.
>
> I am running the following:
> FreeBSD 6.4 x64 bit
> Apache 2.0.63
> PHP 5.2.8 and 5.2.12 with Suhosin-Patch 0.9.6.3
>
> When we go to access a page that is pulling data from a database server,
> apache segfaults and we get the following in our /var/log/messages:
>
> Apr 27 10:30:56 my-machine-name-1 suhosin[5251]: ALERT - canary mismatch on
> efree() - heap overflow detected (attacker 'my.ip.addr.ess', file
> '/usr/local/www/dev-assessment-03.mydomain.com/admin/dm.index.php', line
> 635)
>
> The error only seems to occur intermittently, like say 7-8 out of every 10
> attempts.
>
> Has anyone encountered this?  Any thoughts tips or tricks that you could
> possibly share?
>
> ~bronson
>
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-- 
Robert Gonzalez
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