debcrafters-packages team mailing list archive

[Nick Rosbrook <2112611@xxxxxxxxxxxxxxxxxx>]

There was a somewhat recent security update that fixed the logic of the
DisableForwarding option:
https://launchpad.net/ubuntu/+source/openssh/1:9.6p1-3ubuntu13.11

I wonder if you have that option configured, and it just recently
started to take effect.

Can you please share the output of:

$ apt policy openssh-server
$ sshd -G | grep forward

from one of the affected servers?

** Changed in: openssh (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/2112611

Title:
  ssh -X and ssh -Y does not work to non-ESM enabled servers iin 22.04

Status in openssh package in Ubuntu:
  Incomplete

Bug description:
  Until recently I have been able to ssh -X to my machines and run X applications such as synaptic remotely.
  Within the last two days this broke and I am not 100% sure if it is an issue with xauth or ssh but it will not start X forwarding, debugging just says it fails without much info.  However, it works on all ESM enabled machines.  These are all Ubuntu 24.04.  The only difference I can see is some of the libs that xauth uses appear to be different.  But I don't know the root cause, I just know it was working until recently and now it doesn't.

  ProblemType: Bug
  DistroRelease: Ubuntu 24.04
  Package: ssh (not installed)
  Uname: Linux 6.15.0 x86_64
  ApportVersion: 2.28.1-0ubuntu3.6
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CurrentDesktop: MATE
  Date: Thu Jun  5 20:46:47 2025
  SourcePackage: openssh
  UpgradeStatus: Upgraded to noble on 2024-10-05 (244 days ago)

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