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openSUSE Putty Important Program Crash Fix Advisory 2026-20851-1

opensuse
Calendar Grey June 1, 2026
Dist Opensuse Esm H88
Update for openSUSE Leap 16.0 addressing important security flaws in Putty ensuring stable connections.
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...

Read the Full Advisory

Patch

Package List

- openSUSE Leap 16.0:

putty-0.84-bp160.1.1

References

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: openSUSE-SU-2026:20851-1
Rating: important
Affected Products: openSUSE Leap 16.0 -------------------------------------------------------------

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