"Bad packet length 1231976033"

Darren Tucker dtucker at dtucker.net
Tue Apr 25 10:22:14 AEST 2023

On Tue, 25 Apr 2023 at 03:36, Philip Prindeville
<philipp_subx at redfish-solutions.com> wrote:
> > On Apr 10, 2023, at 7:24 AM, Darren Tucker <dtucker at dtucker.net> wrote:
> > Since you're using 9.1, the message could be an "Invalid free", since
> > there was a double-free bug in that release :-(
> Forgot to ask: does this bug manifest at any particular time, or just connection initiation?
> Because I can see it happen on a connection that's been up for days... either idle or experiencing heavy traffic... etc.

Only at connection initiation, and only when the client is an old
version of PuTTY that doesn't support the modern form of the
diffie-hellman group exchange protocol.

Darren Tucker (dtucker at dtucker.net)
GPG key 11EAA6FA / A86E 3E07 5B19 5880 E860  37F4 9357 ECEF 11EA A6FA
    Good judgement comes with experience. Unfortunately, the experience
usually comes from bad judgement.

More information about the openssh-unix-dev mailing list