[Bug 3027] New: The "Bad local forwarding specification" error only caused by socket filename longer than 103 characters

[bugzilla-daemon at bugzilla.mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=3027

            Bug ID: 3027
           Summary: The "Bad local forwarding specification" error only
                    caused by socket filename longer than 103 characters
           Product: Portable OpenSSH
           Version: 7.9p1
          Hardware: 68k
                OS: Mac OS X
            Status: NEW
          Severity: normal
          Priority: P5
         Component: ssh
          Assignee: unassigned-bugs at mindrot.org
          Reporter: vpithart at lhota.hkfree.org

When using `ssh -L local_socket:remote_socket` according to manual,
when the `remote_socket` filename length is 104+ characters, the "Bad
local forwarding specification" error jumps out and SSH client does not
work.

Example 1 (fail):
$ ssh -nNT -L
/tmp/live:/var/lib/docker/overlay2/1c59b2ed03064cf516958d01354b81fadfa7ab625fac6c13bffe8bc52a29f9cd/merged/usr/local/nagios/var/rw/live
root at example.com
Bad local forwarding specification
'/tmp/live:/var/lib/docker/overlay2/1c59b2ed03064cf516958d01354b81fadfa7ab625fac6c13bffe8bc52a29f9cd/merged/usr/local/nagios/var/rw/live'


Example 2 (works):
$ ssh -nNT -L
/tmp/l:/var/lib/docker/overlay2/1c59b2ed03064cf516958d01354b81fadfa7ab625fac6c13bffe8bc52a29f9cd/merged/usr/loc
root at example.com
(works as expected)

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