[SSSD] [PATCH] krb5: Check return value of sss_krb5_princ_realm

Lukas Slebodnik lslebodn at redhat.com
Thu Mar 13 12:56:50 UTC 2014


On (13/03/14 13:11), Sumit Bose wrote:
>On Tue, Oct 15, 2013 at 01:59:28PM +0200, Pavel Březina wrote:
>> On 10/14/2013 11:50 AM, Lukas Slebodnik wrote:
>> >ehlo,
>> >
>> >yet another warning from clang static analyser.
>> >
>> >sss_krb5_princ_realm set output parameter realm to NULL and len to 0
>> >in case of failure. Clang static analysers repoted warning
>> >"Null pointer passed as an argument to a 'nonnull' parameter"
>> >in function match_principal. It was possible, that realm_name with value NULL
>> >could be used in strncmp.
>> >
>> >Function sss_krb5_princ_realm is used on other places for printing(formatting)
>> >realm_name and NULL can be safely used as a argument for printf-like
>> >functions.
>> >
>> >Patch is attached.
>> >
>> >LS
>> 
>> The returned value should be checked on other references as well.
>
>Hi Lukas,
>
>are you planning to update this patch? I think it would be a good idea.
>
>Additionally I would like to ask you if you can fix the
>HAVE_KRB5_PRINCIPAL_GET_REALM branch of sss_krb5_princ_realm(). Since
>krb5_principal_get_realm() may return NULL I think it is not a good idea
>to call strlen() unconditionally.
>
>bye,
>Sumit
>
This patch had very low priority in TODO list.
I will try to send patch.

LS



More information about the sssd-devel mailing list