Re: [tor-bugs] #31653 [Core Tor/Tor]: padding machine sending padding from relay to client closes circuit

["Tor Bug Tracker & Wiki" <blackhole@xxxxxxxxxxxxxx>]

#31653: padding machine sending padding from relay to client closes circuit
-----------------------------+------------------------------------
 Reporter:  pulls            |          Owner:  (none)
     Type:  defect           |         Status:  new
 Priority:  Medium           |      Milestone:  Tor: 0.4.2.x-final
Component:  Core Tor/Tor     |        Version:  Tor: 0.4.1.5
 Severity:  Normal           |     Resolution:
 Keywords:  wtf-pad circpad  |  Actual Points:
Parent ID:                   |         Points:
 Reviewer:                   |        Sponsor:
-----------------------------+------------------------------------

Comment (by arma):

 Haven't looked at all the code, but upon reading the bug report, I also
 suspect an out-of-order send. Perhaps the code that is about to send the
 cell triggers the code to check for padding, and the code to check for
 padding sneaks in a padding cell right then, and then it returns and the
 original code sends its cell.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/31653#comment:5>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online

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