I have tested the "lite" version of that patch (only the S_UNDEF patch)
for 30+ hours in a scenario that managed to crash after a few hours without
it, so am reasonably confident it fixes the 2.6.7 crashes observed - in
case there *are* other cases, we added a M_FATAL so we stop with a debug
note, and do not SIGSEGV.  This really is a "can't happen", but *if* it
does, we want to know.

Your patch has been applied to the master and release/2.6 branch.

commit a903ebe9361d451daee71c225e141f4e1b67107d (master)
commit b90ec6dabfb151dd93ef00081bbc3f55e7d3450f (release/2.6)
Author: Arne Schwabe
Date:   Wed Nov 15 11:33:31 2023 +0100

     Do not check key_state buffers that are in S_UNDEF state

     Signed-off-by: Arne Schwabe <a...@rfc2549.org>
     Acked-by: Gert Doering <g...@greenie.muc.de>
     Message-Id: <20231115103331.18050-1-g...@greenie.muc.de>
     URL: 
https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg27401.html
     Signed-off-by: Gert Doering <g...@greenie.muc.de>


--
kind regards,

Gert Doering



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