(RHSA-2021:0073) Moderate: kernel security and bug fix update

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: soft-lockups in iov_iter_copy_from_user_atomic() could result in DoS (CVE-2020-25641)

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):

• Please backport Jitter Entropy patches (BZ#1884682)

• Sometimes hit “error: kvm run failed Bad address” when launching a guest on Power8 (BZ#1890883)

• [Intel 8.3 BUG] Unable to insert ‘i10nm_edac.ko’ EDAC kernel module on JVL after CPU upgraded (BZ#1893330)

• RHEL8.1 - Random memory corruption may occur due to incorrect tlbflush (BZ#1899209)

• RHEL8.1 Alpha - ISST-LTE:PNV:Witherspoon-DD2.3:woo: KDUMP hang during shutdown, lpfc loses connection to disks (rootdisk:nvme) (BZ#1900101)

• pmtu of 1280 for vxlan as bridge port won’t work (BZ#1902083)

• Allocating domain failed for ehci-pci device (BZ#1902801)

• [Azure][RHEL8] IP forwarding issue in netvsc (BZ#1904326)

• pmtu not working with tunnels as bridge ports and br_netfilter loaded (BZ#1907577)

• [Regression] RHEL8.2 - [kernel 148.el8] cpu (sys) time regression in SAP HANA 2.0 benchmark benchInsertSubSelectPerformance (BZ#1908520)