Problem Description:
EAP-pwd implementation in hostapd (EAP server) and wpa_supplicant
(EAP peer) does not to validate fragmentation reassembly state
properly for a case where an unexpected fragment could be received.
This could result in process termination due to NULL pointer
dereference.
See
https://w1.fi/security/2019-5/eap-pwd-message-reassembly-issue-with-unexpected-fragment.txt
for a detailed description of the bug.
Impact:
All wpa_supplicant and hostapd versions with EAP-pwd support could
suffer a denial of service attack through process termination.
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