RHSA-2020:4286: 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: net: bluetooth: type confusion while processing AMP packets (CVE-2020-12351) kernel: net: bluetooth: information leak when processing certain AMP packets (CVE-2020-12352) kernel: metadata validator in XFS may cause an inode with a valid, user-creatable extended attribute to be flagged as corrupt (CVE-2020-14385) kernel: memory corruption in net/packet/afpacket.c leads to elevation of privilege (CVE-2020-14386) kernel: kernel: buffer over write in vgaconscroll (CVE-2020-14331) 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): [mlx5] stale ethtool steering rules remain after moving back to legacy mode (BZ#1857777) 50% cpu in maskedflowupdate with pop to pod TCPRR (BZ#1859216) take into account GSO and fragmented packets in executecheckpktlen action (BZ#1860169) RHEL8.1 - scsi: ibmvfc: Avoid loss of all paths during SVC node reboot (BZ#1866371) RHEL8.3 Pre-Beta - smc: SMC connections hang with later-level implementations (BZ#1866390) Incorrect pinning of IRQ threads on isolated CPUs by drivers that use cpumasklocalspread() (BZ#1867174) [RHEL8] Fixes for DEADLINE scheduler class (BZ#1867612) RHEL8.1 - s390/pci: Fix unexpected write combine on resource (BZ#1869276) dm multipath: fix spurious failures during IO completion [EIOP-8345] (BZ#1869386) IO on virtio-scsi hangs when running cpu hotplug test (BZ#1869779) storerpsmap doesn't accept an empty bitmask, which is required for disabling RPS on a queue (BZ#1870181) Memory registration cache data corruption possible, fix requires backporting (BZ#1872424) fix another case of wait list corruption for PSM/sdma (BZ#1872766) [RHEL-8] Segmentation fault (core dumped) when fibw -e msg -v -T 1 -p "verbs" (BZ#1872771) fix mounting and inode number handling on s390x (BZ#1875787) failure to enter nohzfull mode for non SCHEDFIFO tasks (BZ#1877417) Secure boot key is not loaded with kernel-4.18.0-232.el8.x8664 / shim-x64-15-15 (BZ#1877528) [RHEL-8.3] Kdump failed to start when secure boot enabled: kexecfileload failed: Required key not available (BZ#1877530) [RHEL-8.3] Kdump/kexec kernel panicked on EFI boot: general protection fault: 0000 [#1] SMP PTI (BZ#1879988) Sleeping or scheduling after schedcpudying() led to "scheduling while atomic" and BUG at kernel/cpu.c:907! (BZ#1880081) [conntrack] udp packet reverse NAT occasionally fail when race condition request combination with the DNAT load balancing rules (BZ#1882095) [Regression] RHEL8.3 Beta - Do not initiate shutdown for EPOWSHUTDOWNONUPS event (BZ#1882243)