RHSA-2020:2667 — Security Advisory

An update for kernel is now available for Red Hat Enterprise Linux 8.1 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

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

Security Fix(es):

• kernel: use-after-free in block/bfq-iosched.c related to bfq_idle_slice_timer_body (CVE-2020-12657)

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):

• [FJ8.2 Bug]: kernel: retrieving process core dump of the init process (PID 1) fails (BZ#1821377)

• Stand-alone CPU Linpack test reports bad residual on HPC Cluster node(s) while running RHEL 8 (BZ#1827618)

• missing version.h dependency for modpost may cause build to fail (BZ#1828228)

• RHEL8.2 Pre-Beta - net/ibmvnic: Fix typo in retry check (BZ#1828708)

• efi: kernel panic during ltp fs test - read_all -d /sys -q -r 10 (BZ#1829526)

• RHEL8.2 Beta - SMC-R connection with vlan-id fails (BZ#1830895)

• RHEL8.1 - RHEL8.1 kernel 4.18.0-147.3.1.el8.bz181950_test001.ppc64le+debug failed during LPM test (p8/p9):idahop08:LPM (vtpm) (BZ#1831663)

• s390/pci: fix bugs related to MIO instruction usage (BZ#1834690)

• RHEL8.2 Alpha - ISST-LTE:PowerVM: vNIC DLPAR crashes the LPAR (ibmvnic) (BZ#1836232)

• kernel: hw: provide reporting and microcode mitigation toggle for CVE-2020-0543 / Special Register Buffer Data Sampling (SRBDS) (BZ#1840685)

• [Hyper-V][RHEL8.2] Update netvsc driver (BZ#1842485)

• block layer: update to v5.3 (BZ#1842872)

• netfilter: backports from upstream (BZ#1845041)