[19770] in Kerberos_V5_Development
Re: MIT Kerberos 1.14 : gssint_get_mechanism_cred crash
daemon@ATHENA.MIT.EDU (Greg Hudson)
Thu Jun 14 11:04:05 2018
To: Vipul Mehta <vipulmehta.1989@gmail.com>, krbdev@mit.edu
From: Greg Hudson <ghudson@mit.edu>
Message-ID: <0e954174-4a9e-a117-499c-ff4f88b28176@mit.edu>
Date: Thu, 14 Jun 2018 11:03:51 -0400
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On 06/14/2018 07:05 AM, Vipul Mehta wrote:
> We are facing crash in our application while kerberos security context
> initialization inside gssint_get_mechanism_cred function.
[...]
> Looks like memcmp is causing the issue.
>
> &union_cred->mechs_array[i]->length is 9
> mech_type->length is 9
> mech_type->elements is not NULL
> (&union_cred->mechs_array[i])->elements is also not NULL
>
> Is anyone aware of such issue. Any possible fix ? Let me know if you
> need more information.
I am not aware of any such issue. You should double-check that the cred
handle you are passing is a valid cred handle and was not previously
freed (although the usual method of releasing a cred handle should also
set the pointer to NULL, unless you made a copy of the cred handle
before releasing it). If there is a memory corruption issue in the
application, you might be able to use valgrind to find it.
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