Fedora 43 OpenSSH Key Fix Addresses Privilege Escalation and Session Bugs

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.

CVE-2026-35385: Fix privilege escalation via scp legacy protocol when not in preserving file mode CVE-2026-35388: Add connection multiplexing confirmation for proxy-mode multiplexing sessions CVE-2026-35387: Fix incomplete application of PubkeyAcceptedAlgorithms and HostbasedAcceptedAlgorithms with regard to ECDSA keys CVE-2026-35414: Fix mishandling of authorized_keys principals option CVE-2026-35386: Add validation rules to usernames and hostnames set for ProxyJump/-J on the commandline