SUSE alert openSUSE-SU-2026:20851-1 (putty)

From:
             
 
null@suse.de
To:
             
 
security-announce@lists.opensuse.org
Subject:
             
 
openSUSE-SU-2026:20851-1: important: Security update for putty
Date:
             
 
Mon, 01 Jun 2026 17:51:43 +0200
Message-ID:
             
 
<20260601155143.75E72FCE7@maintenance.suse.de>
Archive-link:
             
 
Article
openSUSE security update: security update for putty
-------------------------------------------------------------

Announcement ID: openSUSE-SU-2026:20851-1
Rating: important


Affected Products:

         openSUSE Leap 16.0

-------------------------------------------------------------

An update that solves various issues can now be installed.

Description:

This update for putty fixes the following issues:

Changes in putty:

- Update to release 0.84
  * Fixed a remotely triggerable double-free in RSA key exchange.
  * Fixed a remotely triggerable crash (assertion failure - program
    termination) in NIST ECDSA signature verification.
  * Fixed marking of Telnet and Rlogin session data with a trust
    sigil after you authenticated to a proxy (possibly allowing a
    server to spoof a repeat proxy password prompt).
  * New ability to run a specified command before starting the
    connection, e.g. to perform wake-on-LAN or a port knock.
  * Display 'pre-edit text', showing the progress of using multiple
    keystrokes to compose a single Unicode character.
  * Improved support for to running the GUI tools on Wayland (fixed
    startup issues and tuned performance).
  * Configuring a SSH certificate authority used to fail unless you
    manually made a config directory, now fixed.
  * Fixed a spurious "Network error: Socket is not connected" when
    authenticating to some HTTP proxies.


Patch instructions:

   To install this openSUSE security update use the suse recommended installation methods
   like YaST online_update or "zypper patch".
   Alternatively you can run the command listed for your product:

- openSUSE Leap 16.0

   zypper in -t patch openSUSE-Leap-16.0-packagehub-281=1

Package List:

- openSUSE Leap 16.0:

  putty-0.84-bp160.1.1