Is "unsafe signal handler vulnerability" of OpenSSH fixed in RHEL 4 and RHEL 5?

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Issue

OpenSSH 4.4 has "unsafe signal handler vulnerability" fix. The latest package in Red Hat Enterprise Linux 4 is OpenSSH 3.9pl_11.el4_7 and that of Red Hat Enterprise Linux 5 is openssh-4.3p2-41.el5. Is "unsafe signal handler vulnerability" of OpenSSH fixed in RHEL 4 and RHEL 5?

Environment

Red Hat Enterprise Linux 4
Red Hat Enterprise Linux 5

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