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mka: Clear out old/latest key values on CHANGE in CP state machine

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The associated SAs have been deleted and the key server has changed so
there's no point in keeping the key values.

Note that this isn't specified in IEEE Std 802.1X-2010.

Signed-off-by: Thomas Winter <Thomas.Winter@alliedtelesis.co.nz>
This commit is contained in:
Thomas Winter 2019-08-27 15:55:36 +12:00 committed by Jouni Malinen
parent 536a7cfcf7
commit 547ba732d3
1 changed files with 18 additions and 0 deletions
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18
src/pae/ieee802_1x_cp.c
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@ -141,6 +141,24 @@ SM_STATE(CP, CHANGE)
ieee802_1x_kay_delete_sas(sm->kay, sm->lki);
if (sm->oki)
ieee802_1x_kay_delete_sas(sm->kay, sm->oki);
/* The standard doesn't say it but we should clear out the latest
* and old key values. Why would we keep advertising them if
* they've been deleted and the key server has been changed?
*/
os_free(sm->oki);
sm->oki = NULL;
sm->otx = FALSE;
sm->orx = FALSE;
sm->oan = 0;
ieee802_1x_kay_set_old_sa_attr(sm->kay, sm->oki, sm->oan,
sm->otx, sm->orx);
os_free(sm->lki);
sm->lki = NULL;
sm->lrx = FALSE;
sm->ltx = FALSE;
sm->lan = 0;
ieee802_1x_kay_set_latest_sa_attr(sm->kay, sm->lki, sm->lan,
sm->ltx, sm->lrx);
}