There is a missing-accounting vulnerability in memcg subsystem of Linux kernel, leading to out of memory and then host system crashes because of this. Reference: https://lore.kernel.org/linux-mm/1626333284-1404-1-git-send-email-nglaive@gmail.com/
This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2022:1975 https://access.redhat.com/errata/RHSA-2022:1975
This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2022:1988 https://access.redhat.com/errata/RHSA-2022:1988
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2021-3759