Ubuntu 22.04（含Server及Surface端）RegreSSHion漏洞修复补丁应用问题咨询

Hi there, sorry to hear you're stuck trying to get the RegreSSHion vulnerability fix installed on your Ubuntu 22.04 running on a Surface. Let's work through some troubleshooting steps to get this sorted:

• First, check if security update repositories are enabled
  Ubuntu's security patches (including this OpenSSH fix) are distributed through the jammy-security repository. Open the /etc/apt/sources.list file with a text editor (like sudo nano /etc/apt/sources.list) and verify you have lines similar to these:

  deb http://archive.ubuntu.com/ubuntu jammy-security main restricted universe multiverse
  deb-src http://archive.ubuntu.com/ubuntu jammy-security main restricted universe multiverse
  

  If these lines are missing, add them, save the file, and run sudo apt update again.

• Check your current OpenSSH version
  Let's confirm if you already have the patched version installed. Run this command:

  dpkg -l openssh-server openssh-client
  

  Look at the Version column in the output. If it shows 1:8.9p1-3ubuntu0.10, the fix is already applied! You might just need to restart the SSH service to make sure it takes effect:

  sudo systemctl restart sshd
  

• Force an upgrade of OpenSSH packages
  If your repositories are set up correctly but the update didn't trigger, try explicitly upgrading just the OpenSSH packages:

  sudo apt update && sudo apt install --only-upgrade openssh-server openssh-client
  

  This command focuses solely on upgrading these two packages, ensuring you get the latest security patch.

• Clear APT cache and retry
  Sometimes stale cache data can prevent updates from pulling the latest packages. Try clearing the cache and running updates again:

  sudo apt clean && sudo apt update && sudo apt upgrade
  

• Surface-specific considerations
  Some Ubuntu installations on Surface devices use custom repositories or hardware-adapted configurations. If you've modified your sources list before, revert to the default security repositories first. Also, ensure your system isn't set to delay security updates (this is rare for personal setups, but worth checking).

If none of these steps work, take a look at the output of sudo apt update for any error messages (like network issues or unreachable repositories) — sharing those details would help pinpoint the problem further.

备注：内容来源于stack exchange，提问作者abhi