RHSA-2020:2427: Important: kernel security and bug fix update

First published: Tue Jun 09 2020(Updated: )

The kernel packages contain the Linux kernel, the core of any Linux operating system.<br>Security Fix(es):<br><li> kernel: use-after-free in block/bfq-iosched.c related to bfq_idle_slice_timer_body (CVE-2020-12657)</li> 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.<br>Bug Fix(es):<br><li> kernel: hw: provide reporting and microcode mitigation toggle for CVE-2020-0543 / Special Register Buffer Data Sampling (SRBDS) (BZ#1827191)</li> <li> ipsec interfaces: fix sending with bpf_redirect() / AF_PACKET sockets (BZ#1821375)</li> <li> IB/core: deadlock on rdma_nl_mutex when netlink triggers on-demand modprobe rdma_cm (BZ#1821381)</li> <li> dm: fix excessive bio splitting that results in performance regressions (BZ#1821382)</li> <li> system time jumps when hotplug vcpu on a long uptime guest (BZ#1822498)</li> <li> [DELL 8.2 BUG]Ethernet : e1000e doesn't work after S2I (BZ#1825262)</li> <li> NFSv3 sec=krb5p fails against an ONTAP server (BZ#1826219)</li> <li> Stand-alone CPU Linpack test reports bad residual on HPC Cluster node(s) while running RHEL 8 (BZ#1827619)</li> <li> [DELL 8.2 BUG]bluetooth Scanning block S3 and Suspend to idle (BZ#1827620)</li> <li> RHEL8.2 Beta - SMC-R connection with vlan-id fails (BZ#1827631)</li> <li> 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#1827632)</li> <li> missing version.h dependency for modpost may cause build to fail (BZ#1828229)</li> <li> efi: kernel panic during ltp fs test - read_all -d /sys -q -r 10 (BZ#1829527)</li> <li> Let "isolcpus=" skip unknown sub-parameters (BZ#1832367)</li> <li> RHEL8.0 - Very bad performance with small blocks in FC-IO found by SAP HANA on POWER tests on RHEL8.0 (compared to RHEL7.4) (BZ#1834517)</li> <li> [FJ8.2 Bug]: [REG] NFS-client panic at nfs4_get_valid_delegation+0x1c/0x40 [nfsv4] (BZ#1837969)</li> <li> [RHEL-8.3] upstream bonding driver refresh (BZ#1838477)</li> <li> Enable xt_u32 module (BZ#1840799)</li> <li> Move xt_u32 module to kernel-modules-extra (BZ#1840800)</li>

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