libssh is a library which implements the SSH protocol. It can be used to implement client and server applications. The following packages have been upgraded to a later upstream version: libssh (0.9.6). (BZ#1896651) Security Fix(es): libssh: possible heap-based buffer overflow when rekeying (CVE-2021-3634) 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. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.6 Release Notes linked from the References section. SolutionFor details on how to apply this update, which includes the changes described in this advisory, refer to:https://access.redhat.com/articles/11258 After installing these updated packages, all running applications using libssh must be restarted for this update to take effect.