Heath Kehoe 545b5b41ce Fix race condition with global _gsskrb5_keytab ...

gsskrb5_acceptor_start() was making a copy of the global pointer
_gsskrb5_keytab to use later. This invites a race condition where
another thread could call gsskrb5_register_acceptor_identity()
(thus invalidating the target of the copied pointer) before it is
used by gsskrb5_acceptor_start().

So instead, clone the keytab to a new one while protected by the
mutex lock (similar to get_keytab() in acquire_cred.c).

Signed-off-by: Nicolas Williams <nico@twosigma.com>

2016-11-10 18:32:15 -06:00

23 KiB

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