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Alerts This Week
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Fedora 43 OpenSSH Major Update Addressing Information Disclosure Issues

fedora
Calendar Grey March 20, 2026
Dist Fedora Esm H88
Critical update for Fedora 43 openssh fix for information disclosure and denial of service due to uninitialized variables.
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 information disclosure openssh

Change Log

* Wed Mar 18 2026 Zoltan Fridrich - 10.0p1-7 - CVE-2026-3497: Fix information disclosure or denial of service due to uninitialized variables in gssapi-keyex Resolves: rhbz#2447290 - remove obsolete patch for ssh manual page Resolves: rhbz#2442505

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-bab4aa5da7' 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
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Critical

Name: openssh
Product: Fedora 43
Version: 10.0p1
Release: 7.fc43
URL: http://www.openssh.com/portable.html
Summary: An open source implementation of SSH protocol version 2

Topics%20covered

Topics Covered

security advisory denial of service fedora important information disclosure openssh

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