From: Mike Siedzik <msiedzik@xxxxxxxxxxxxxxxxxxx>
Upon receipt of the "MACsec MKPDU SAK Use parameter set" the KaY verifies
that both the latest key and the old key are valid. If the local system
reboots or is reinitalizied, the KaY won't have a copy of it's old key.
Therefore if the KaY does not have a copy of it's old key it should not
reject MKPDUs that contain old key data in the MACsec SAK Use parameter.
Signed-off-by: Michael Siedzik <msiedzik@xxxxxxxxxxxxxxxxxxx>
---
src/pae/ieee802_1x_kay.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/src/pae/ieee802_1x_kay.c b/src/pae/ieee802_1x_kay.c
index beaae58f0..d77f81b7b 100644
--- a/src/pae/ieee802_1x_kay.c
+++ b/src/pae/ieee802_1x_kay.c
@@ -1336,8 +1336,9 @@ ieee802_1x_mka_decode_sak_use_body(
}
}
- /* check old key is valid */
- if (body->otx || body->orx) {
+ /* check old key is valid (but only if we remember our old key) */
+ if ((participant->oki.kn != 0) &&
+ (body->otx || body->orx)) {
if (os_memcmp(participant->oki.mi, body->osrv_mi,
sizeof(participant->oki.mi)) != 0 ||
be_to_host32(body->okn) != participant->oki.kn ||
--
2.11.1
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