RHSA-2021:3801: 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: Improper handling of VMIO|VMPFNMAP vmas in KVM can bypass RO checks (CVE-2021-22543) kernel: powerpc: KVM guest OS users can cause host OS memory corruption (CVE-2021-37576) kernel: SVM nested virtualization issue in KVM (AVIC support) (CVE-2021-3653) kernel: SVM nested virtualization issue in KVM (VMLOAD/VMSAVE) (CVE-2021-3656) 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): Kernel panic due to double fault with DLM reporting for socket error "skerr=32/0" (BZ#1834878) "MFW indication via attention" message getting logged frequently after every 5 minutes (BZ#1854544) lpfc fails to discovery in pt2pt with "2754 PRLI failure DID:0000EF Status:x9/x91e00, data: x0" (BZ#1922479) pcpugetvmareas using most memory from VmallocUsed (BZ#1970618) RHEL 7.9.z [qedf driver] Racing condition between qedfcleanupfcport and releasing command after timeout (BZ#1982702) [Azure] RHEL 7.9 reports GPU/IB topology incorrectly on some Azure SKUs (BZ#1984128) [stable guest ABI]Hot add CPU after migration cause guest hang (BZ#1991856) i40e driver crash at RIP: i40econfigvfpromiscuousmode+0x165 (BZ#1993850) [nfs] Performance issue since commit 5a4f6f11951e (BZ#1995649) [kernel] Indefinite waiting for RCU callback while removing cgroup (BZ#2000973)