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ssh in OpenSSH before 10.4 can have a use-after-free when a server changes its host key during a key re-exchange. (This outcome occurs only on the client side.)
This issue has been addressed in the following products: Red Hat Enterprise Linux 10 Via RHSA-2026:47757 https://access.redhat.com/errata/RHSA-2026:47757
This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2026:47756 https://access.redhat.com/errata/RHSA-2026:47756
This issue has been addressed in the following products: Red Hat OpenShift Container Platform 4.22 Via RHSA-2026:54769 https://access.redhat.com/errata/RHSA-2026:54769