[Freeipa-devel] ipa-kpasswd: segfault on startup

[Rob Crittenden]

Frank Botte wrote:
> Hi list,
> 
> while playing around with free-ipa i had the problem, that ipa-kpasswd kept segfaulting on startup.
> The problem started when i accidentally added a user that was already in the local userbase (/etc/passwd)
> 
> After poking around a little bit in the code i found out the following:
> 
> In line 1297 of ipa-kpasswd.c starts a for-loop that goes through a linked list of 'ifaddrs'. On my system one 
> of those ifaddrs contains a NULL pointer for 'tifa->ifa_addr' and this is where ipa-kapasswd segfaults.
> 
> I fixed the problem for me by simply checking if tifa->ifa_addr is a valid pointer (see patch)
>  
> I have no clue if this is just some weirdness in my system or if this is a real problem, so can somebody
> with more knowledge please review my patch and include it if appropriate 
> 
> bye
> Frank
>

Thanks for the patch.

This is fixed in our source tip already, someone reported it in our IRC 
channel (#freeipa) last week (you perhaps?)

It will be contained when we do our next release (no concrete plans on 
when that will be at the moment).

rob
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