RHSA-2021:0003: Important: kernel security and bug fix update

The kernel packages contain the Linux kernel, the core of any Linux operating system.Security Fix(es): kernel: Local buffer overflow in ctnetlinkparsetuplefilter in net/netfilter/nfconntracknetlink.c (CVE-2020-25211) 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.Bug Fix(es): avoid flushbacklog IPI for isolated CPUs by configuring RPS cpumask (BZ#1883314) rngd consumes 100% cpu on rhel-8.3 system in fips mode (BZ#1886192) RHEL8.1 - Random memory corruption may occur due to incorrect tlbflush (BZ#1899208) fips mode boot is broken after adding extrng (BZ#1899584) pmtu of 1280 for vxlan as bridge port won't work (BZ#1902082) rpc task loop with kworker spinning at 100% CPU for 10 minutes when umount an NFS 4.x share with sec=krb5 triggered by unmount of the NFS share (BZ#1907667)