RHSA-2021:3477: Important: RHV-H security update (redhat-virtualization-host) 4.3.18

First published: Thu Sep 09 2021(Updated: )

The redhat-virtualization-host packages provide the Red Hat Virtualization Host.<br>These packages include redhat-release-virtualization-host. Red Hat<br>Virtualization Hosts (RHVH) are installed using a special build of Red Hat<br>Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host's resources and<br>performing administrative tasks.<br>Security Fix(es):<br><li> sssd: shell command injection in sssctl (CVE-2021-3621)</li> <li> kernel: use-after-free in route4_change() in net/sched/cls_route.c (CVE-2021-3715)</li> <li> kernel: out-of-bounds write in xt_compat_target_from_user() in net/netfilter/x_tables.c (CVE-2021-22555)</li> <li> libX11: missing request length checks (CVE-2021-31535)</li> <li> kernel: race condition for removal of the HCI controller (CVE-2021-32399)</li> 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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