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Fedora 42: OpenSSH Important Security Fix CVE-2025-61985

fedora
Calendar Grey January 13, 2026
Dist Fedora Esm H88
The Fedora 42 security advisory details fixes for important vulnerabilities in OpenSSH that enhance security.
Added fixes for CVE-2025-61985 and CVE-2025-61984

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:

Added fixes for CVE-2025-61985 and CVE-2025-61984

Topics%20covered

Topics Covered

security advisory fedora buffer overflow remote access important openssh

Change Log

* Thu Jan 8 2026 Zoltan Fridrich - 9.9p1-12 - CVE-2025-61984: Reject usernames with control characters Resolves: rhbz#2402667 - CVE-2025-61985: Reject URL-strings with NULL characters Resolves: rhbz#2402670

References


[ 1 ] Bug #2402667 - CVE-2025-61984 openssh: From CVEorg collector [fedora-42] https://bugzilla.redhat.com/show_bug.cgi?id=2402667 [ 2 ] Bug #2402670 - CVE-2025-61985 openssh: From CVEorg collector [fedora-42] https://bugzilla.redhat.com/show_bug.cgi?id=2402670

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-9d457091e8' 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 42
Version: 9.9p1
Release: 12.fc42
URL: https://www.openssh.org/portable.html
Summary: An open source implementation of SSH protocol version 2

Topics%20covered

Topics Covered

security advisory fedora buffer overflow remote access important openssh

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