An update for openssh is now available for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of
Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX,
and similar operating systems. It includes the core files necessary for both the OpenSSH client and server.

Security Fix(es):

* openssh: Local MITM of X11 forwarding via abstract UNIX socket pre-binding in
Red Hat Enterprise Linux OpenSSH client versions (CVE-2026-55655)

* openssh: Double free in Red Hat Enterprise Linux versions of OpenSSH DH-GEX
client path during FIPS known-group validation leads to client-side denial of service (CVE-2026-55653)

* openssh: Heap out-of-bounds read in Red Hat Enterprise Linux versions of
OpenSSH GSSAPI indicator cleanup due to missing NULL sentinel termination (CVE-2026-55654)

* openssh: OpenSSH: Use-after-free vulnerability during host key re-exchange on
the client side (CVE-2026-60002)

* openssh: OpenSSH: `scp` file misplacement vulnerability during remote copy
(CVE-2026-59996)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

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CVE-2026-55653: Double Free (CWE-415)
CVE-2026-55654: Out-of-bounds Read (CWE-125)
CVE-2026-55655: Improper Restriction of Communication Channel to Intended
Endpoints (CWE-923)
CVE-2026-59996: Improper Limitation of a Pathname to a Restricted Directory
('Path Traversal') (CWE-22)
CVE-2026-60002: Expired Pointer Dereference (CWE-825)