(RHSA-2020:4287) 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/af_packet.c leads to elevation of privilege (CVE-2020-14386)

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):

• NFS client autodisconnect timer may fire immediately after TCP connection setup and may cause DoS type reconnect problem in complex network environments (BZ#1873571)

• hang on full fs from trace_cmd (BZ#1875789)

• Secure boot key is not loaded with kernel-4.18.0-232.el8.x86_64 / shim-x64-15-15 (BZ#1877527)

• [RHEL-8.3] Kdump failed to start when secure boot enabled: kexec_file_load failed: Required key not available (BZ#1877529)

• [RHEL-8.3] Kdump/kexec kernel panicked on EFI boot: general protection fault: 0000 [#1] SMP PTI (BZ#1879987)

• [conntrack] udp packet reverse NAT occasionally fail when race condition request combination with the DNAT load balancing rules (BZ#1882096)

• [Regression] RHEL8.3 Beta - Do not initiate shutdown for EPOW_SHUTDOWN_ON_UPS event (BZ#1882244)