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Red Hat: RHSA-2020-3222-01 Important Update: Kernel Security And Bug Fix

red hat
Calendar Grey July 29, 2020
Dist Redhat Esm H88
Crucial kernel modifications for Red Hat Enterprise Linux have been released, featuring bug remedies and security upgrades detailed in the latest notice.
An update for kernel is now available for Red Hat Enterprise Linux 8.1 Extended Update Support

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

The system must be rebooted for this update to take effect.

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* kernel: use-after-free in sound/core/timer.c (CVE-2019-19807)
* kernel: kernel: DAX hugepages not considered during mremap (CVE-2020-10757)
* kernel: Rogue cross-process SSBD shutdown. Linux scheduler logical bug allows an attacker to turn off the SSBD protection. (CVE-2020-10766)
* kernel: Indirect Branch Prediction Barrier is force-disabled when STIBP is unavailable or enhanced IBRS is available. (CVE-2020-10767)
* kernel: Indirect branch speculation can be enabled after it was force-disabled by the PR_SPEC_FORCE_DISABLE prctl command. (CVE-2020-10768)
* kernel: buffer overflow in mwifiex_cmd_append_vsie_tlv function in drivers/net/wireless/marvell/mwifiex/scan.c (CVE-2020-12653)
* kernel: heap-based buffer overflow in mwifiex_ret_wmm_get_status function in drivers/net/wireless/marvell/mwifiex/wmm.c (CVE-2020-12654)
* Kernel: vfio: access to disabled MMIO space of some devices may lead to DoS scenario (CVE-2020-12888)
* kernel: lockdown: bypass through ACPI write via efivar_ssdt (CVE-2019-20908)
* kernel: lockdown: bypass through ACPI write via acpi_configfs (CVE-2020-15780)
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):
* [DELL EMC 8.1 BUG] : Observing Multiple "hw csum failure" while installing RHEL 8.1 on iSCSI LUN (BZ#1821374)
* kernel: provide infrastructure to support dual-signing of the kernel (foundation to help address CVE-2020-10713) (BZ#1837432)
* deadlock between modprobe and netns exit (BZ#1845163)
* exit_boot failed when install RHEL8.1 (BZ#1846179)
* http request is taking more time for endpoint running on different host via nodeport service (BZ#1847127)
* RHEL8.1 - s390/cio: fix virtio-ccw DMA without PV (BZ#1847534)
* RHEL8.1 - zEDC problems on z14 (genwqe/pci) (BZ#1847939)
* NVMe/FC with DM-MP unexpected I/O failure during "transitioning" [EIOP-8345] (BZ#1854678)
* Backport conntrack race condition fixes (BZ#1854953)
* nf_conntrack module unload fail and refcount become to negative (BZ#1854954)

Topics%20covered

Topics Covered

security advisory Red Hat bug fix DoS important kernel security impact

References

https://access.redhat.com/security/cve/CVE-2019-19807 https://access.redhat.com/security/cve/CVE-2019-20908 https://access.redhat.com/security/cve/CVE-2020-10757 https://access.redhat.com/security/cve/CVE-2020-10766 https://access.redhat.com/security/cve/CVE-2020-10767 https://access.redhat.com/security/cve/CVE-2020-10768 https://access.redhat.com/security/cve/CVE-2020-12653 https://access.redhat.com/security/cve/CVE-2020-12654 https://access.redhat.com/security/cve/CVE-2020-12888 https://access.redhat.com/security/cve/CVE-2020-15780 https://access.redhat.com/security/updates/classification#important https://access.redhat.com/security/vulnerabilities/grub2bootloader

Package List

Red Hat Enterprise Linux BaseOS EUS (v. 8.1):
Source: kernel-4.18.0-147.24.2.el8_1.src.rpm
aarch64: bpftool-4.18.0-147.24.2.el8_1.aarch64.rpm bpftool-debuginfo-4.18.0-147.24.2.el8_1.aarch64.rpm kernel-4.18.0-147.24.2.el8_1.aarch64.rpm kernel-core-4.18.0-147.24.2.el8_1.aarch64.rpm kernel-cross-headers-4.18.0-147.24.2.el8_1.aarch64.rpm kernel-debug-4.18.0-147.24.2.el8_1.aarch64.rpm kernel-debug-core-4.18.0-147.24.2.el8_1.aarch64.rpm kernel-debug-debuginfo-4.18.0-147.24.2.el8_1.aarch64.rpm kernel-debug-devel-4.18.0-147.24.2.el8_1.aarch64.rpm kernel-debug-modules-4.18.0-147.24.2.el8_1.aarch64.rpm kernel-debug-modules-extra-4.18.0-147.24.2.el8_1.aarch64.rpm kernel-debuginfo-4.18.0-147.24.2.el8_1.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-147.24.2.el8_1.aarch64.rpm kernel-devel-4.18.0-147.24.2.el8_1.aarch64.rpm kernel-headers-4.18.0-147.24.2.el8_1.aarch64.rpm kernel-modules-4.18.0-147.24.2.el8_1.aarch64.rpm kernel-modules-extra-4.18.0-147.24.2.el8_1.aarch64.rpm kernel-tools-4.18.0-147.24.2.el8_1.aarch64.rpm kernel-tools-debuginfo-4.18.0-147.24.2.el8_1.aarch64.rpm kernel-tools-libs-4.18.0-147.24.2.el8_1.aarch64.rpm perf-4.18.0-147.24.2.el8_1.aarch64.rpm perf-debuginfo-4.18.0-147.24.2.el8_1.aarch64.rpm python3-perf-4.18.0-147.24.2.el8_1.aarch64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:3222-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:3222
Issue date: 2020-07-29

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.1Extended Update Support.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory Red Hat bug fix DoS important kernel security impact

Relevant Releases Architectures

Red Hat CodeReady Linux Builder EUS (v. 8.1) - aarch64, ppc64le, x86_64

Red Hat Enterprise Linux BaseOS EUS (v. 8.1) - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

1786078 - CVE-2019-19807 kernel: use-after-free in sound/core/timer.c

1831868 - CVE-2020-12653 kernel: buffer overflow in mwifiex_cmd_append_vsie_tlv function in drivers/net/wireless/marvell/mwifiex/scan.c

1832530 - CVE-2020-12654 kernel: heap-based buffer overflow in mwifiex_ret_wmm_get_status function in drivers/net/wireless/marvell/mwifiex/wmm.c

1836244 - CVE-2020-12888 Kernel: vfio: access to disabled MMIO space of some devices may lead to DoS scenario

1842525 - CVE-2020-10757 kernel: kernel: DAX hugepages not considered during mremap

1845840 - CVE-2020-10766 kernel: Rogue cross-process SSBD shutdown. Linux scheduler logical bug allows an attacker to turn off the SSBD protection.

1845867 - CVE-2020-10767 kernel: Indirect Branch Prediction Barrier is force-disabled when STIBP is unavailable or enhanced IBRS is available.

1845868 - CVE-2020-10768 kernel: Indirect branch speculation can be enabled after it was force-disabled by the PR_SPEC_FORCE_DISABLE prctl command.

1852942 - CVE-2019-20908 kernel: lockdown: bypass through ACPI write via efivar_ssdt

1852962 - CVE-2020-15780 kernel: lockdown: bypass through ACPI write via acpi_configfs

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