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Fedora 42 OpenSSH Important Info Disclosure DoS Fix FEDORA-2026-39819a3d62

fedora
Calendar Grey March 21, 2026
Dist Fedora Esm H88
Fix for OpenSSH in Fedora 42 addressing critical information disclosure issues and potential DoS risks with CVE-2026-3497.
CVE-2026-3497: Fix information disclosure or denial of service due to uninitialized variables in gssapi-keyex

Summary

SSH (Secure SHell) is a program for logging into and executing

commands on a remote machine. SSH is intended to replace rlogin and

rsh, and to provide secure encrypted communications between two

untrusted hosts over an insecure network. X11 connections and

arbitrary TCP/IP ports can also be forwarded over the secure channel.

OpenSSH is OpenBSD's version of the last free version of SSH, bringing

it up to date in terms of security and features.

This package includes the core files necessary for both the OpenSSH

client and server. To make this package useful, you should also

install openssh-clients, openssh-server, or both.

Update Information:

CVE-2026-3497: Fix information disclosure or denial of service due to uninitialized variables in gssapi-keyex

Topics%20covered

Topics Covered

security advisory denial of service fedora important openssh information

Change Log

* Wed Mar 18 2026 Zoltan Fridrich - 9.9p1-13 - CVE-2026-3497: Fix information disclosure or denial of service due to uninitialized variables in gssapi-keyex Resolves: rhbz#2447289

References


[ 1 ] Bug #2442505 - 0043-openssh-8.7p1-ssh-manpage.patch introduces duplicates in documentation https://bugzilla.redhat.com/show_bug.cgi?id=2442505 [ 2 ] Bug #2447289 - CVE-2026-3497 openssh: OpenSSH GSSAPI: Information disclosure or denial of service due to uninitialized variables [fedora-42] https://bugzilla.redhat.com/show_bug.cgi?id=2447289 [ 3 ] Bug #2447290 - CVE-2026-3497 openssh: OpenSSH GSSAPI: Information disclosure or denial of service due to uninitialized variables [fedora-43] https://bugzilla.redhat.com/show_bug.cgi?id=2447290

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-39819a3d62' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

Severity
important
Lowest
Low
Medium
High
Critical

Name: openssh
Product: Fedora 42
Version: 9.9p1
Release: 13.fc42
URL: https://www.openssh.org/portable.html
Summary: An open source implementation of SSH protocol version 2

Topics%20covered

Topics Covered

security advisory denial of service fedora important openssh information

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