RHSA-2021:0558: Important: kernel security, bug fix, and enhancement update

The kernel packages contain the Linux kernel, the core of any Linux operating system.Security Fix(es): kernel: locking issue in drivers/tty/ttyjobctrl.c can lead to an use-after-free (CVE-2020-29661) kernel: performance counters race condition use-after-free (CVE-2020-14351) kernel: ICMP rate limiting can be used for DNS poisoning attack (CVE-2020-25705) 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): Final fixes + drop alphasupport flag requirement for Tigerlake (BZ#1882620) OVS complains Invalid Argument on TCP packets going into conntrack (BZ#1892744) BUG: using smpprocessorid() in preemptible [00000000] code: handler106/3082 (BZ#1893281) Icelake performance - add intelidle: Customize IceLake server support to RHEL-8 (BZ#1897183) [mlx5] IPV6 TOS rewrite flows are not getting offloaded in HW (BZ#1897688) RHEL 8.3 SAS - multipathd fails to re-establish paths during controller random reset (BZ#1900112) RHEL8.3 Beta - RHEL8.3 hangs on dbginfo.sh execution, crash dump generated (mm-) (BZ#1903019) Win10 guest automatic reboot after migration in Win10 and WSL2 on AMD hosts (BZ#1905084) block, dm: fix IO splitting for stacked devices (BZ#1905136) Failed to hotplug scsi-hd disks (BZ#1905214) PCI quirk needed to prevent GPU hang (BZ#1906516) RHEL8.2 - various patches to stabilize the OPAL error log processing and the powernv dump processing (ESS) (BZ#1907301) pmtu not working with tunnels as bridge ports and brnetfilter loaded (BZ#1907576) [ThinkPad X13/T14/T14s AMD]: Kdump failed (BZ#1907775) NFSv4 client improperly handles interrupted slots (BZ#1908312) NFSv4.1 client ignores ERRDELAY during LOCK recovery, could lead to data corruption (BZ#1908313) [Regression] RHEL8.2 - [kernel 148.el8] cpu (sys) time regression in SAP HANA 2.0 benchmark benchInsertSubSelectPerformance (BZ#1908519) RHEL8: kernel-rt: kernel BUG at kernel/sched/deadline.c:1462! (BZ#1908731) SEV VM hang at efimokvarsysfsinit+0xa9/0x19d during boot (BZ#1909243) C6gn support requires "Ensure dirty bit is preserved across ptewrprotect" patch (BZ#1909577) [Lenovo 8.3 & 8.4 Bug] [Regression] No response from keyboard and mouse when boot from tboot kernel (BZ#1911555) Kernel crash with krb5p (BZ#1912478) [RHEL8] Need additional backports for FIPS 800-90A DRBG entropy seeding source (BZ#1912872) [Hyper-V][RHEL-8] Request to included a commit that adds a timeout to vmbuswaitforunload (BZ#1913528) Host becomes unresponsive during stress-ng --cyclic test rcu: INFO: rcupreempt detected stalls on CPUs/tasks: (BZ#1913964) RHEL8.4: Backport upstream RCU patches up to v5.6 (BZ#1915638) Missing mm backport to fix regression introduced by another mm backport (BZ#1915814) [Hyper-V][RHEL-8]video: hypervfb: Fix the cache type when mapping the VRAM Edit (BZ#1917711) ionic 0000:39:00.0 ens2: IONICCMDQINIT (40) failed: IONICRCERROR (-5) (BZ#1918372) [certification] mlx5core depends on tls triggering TAINTTECHPREVIEW even if no ConnectX-6 card is present (BZ#1918743) kvm-rhel8.3 [AMD] - system crash observed while powering on virtual machine with attached VF interfaces. (BZ#1919885) Enhancement(s): [Mellanox 8.4 FEAT] mlx5: Add messages when VF-LAG fails to start (BZ#1892344)