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RedHat: RHSA-2020-2102-01 Important: Kernel Security Fixes

red hat
Calendar Grey May 12, 2020
Dist Redhat Esm H88
Keep updated with the latest kernel security patch for Red Hat Enterprise Linux 8, which addresses several bugs.
An update for kernel is now available for Red Hat Enterprise Linux 8

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: NetLabel: null pointer dereference while receiving CIPSO packet with null category may cause kernel panic (CVE-2020-10711)
* Kernel: s390: page table upgrade in secondary address mode may lead to privilege escalation (CVE-2020-11884)
* Kernel: kvm: nVMX: L2 guest may trick the L0 hypervisor to access sensitive L1 resources (CVE-2020-2732)
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):
* [RHEL8.2][Azure]Commits to resolve high network latency (BZ#1817945)
* cpu.share scheduling performance issue (BZ#1819909)
* [DELL 8.2 BUG] [WD 19 SC/DC/TBT] ALSA: Microphone can't record via front port after suspend (BZ#1821376)

Topics%20covered

Topics Covered

security advisory privilege escalation bug fix Red Hat Enterprise Linux kernel system reboot kernel panic

References

https://access.redhat.com/security/cve/CVE-2020-2732 https://access.redhat.com/security/cve/CVE-2020-10711 https://access.redhat.com/security/cve/CVE-2020-11884 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux BaseOS (v. 8):
Source: kernel-4.18.0-193.1.2.el8_2.src.rpm
aarch64: bpftool-4.18.0-193.1.2.el8_2.aarch64.rpm bpftool-debuginfo-4.18.0-193.1.2.el8_2.aarch64.rpm kernel-4.18.0-193.1.2.el8_2.aarch64.rpm kernel-core-4.18.0-193.1.2.el8_2.aarch64.rpm kernel-cross-headers-4.18.0-193.1.2.el8_2.aarch64.rpm kernel-debug-4.18.0-193.1.2.el8_2.aarch64.rpm kernel-debug-core-4.18.0-193.1.2.el8_2.aarch64.rpm kernel-debug-debuginfo-4.18.0-193.1.2.el8_2.aarch64.rpm kernel-debug-devel-4.18.0-193.1.2.el8_2.aarch64.rpm kernel-debug-modules-4.18.0-193.1.2.el8_2.aarch64.rpm kernel-debug-modules-extra-4.18.0-193.1.2.el8_2.aarch64.rpm kernel-debuginfo-4.18.0-193.1.2.el8_2.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-193.1.2.el8_2.aarch64.rpm kernel-devel-4.18.0-193.1.2.el8_2.aarch64.rpm kernel-headers-4.18.0-193.1.2.el8_2.aarch64.rpm kernel-modules-4.18.0-193.1.2.el8_2.aarch64.rpm kernel-modules-extra-4.18.0-193.1.2.el8_2.aarch64.rpm kernel-tools-4.18.0-193.1.2.el8_2.aarch64.rpm kernel-tools-debuginfo-4.18.0-193.1.2.el8_2.aarch64.rpm kernel-tools-libs-4.18.0-193.1.2.el8_2.aarch64.rpm perf-4.18.0-193.1.2.el8_2.aarch64.rpm perf-debuginfo-4.18.0-193.1.2.el8_2.aarch64.rpm python3-perf-4.18.0-193.1.2.el8_2.aarch64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:2102-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:2102
Issue date: 2020-05-12

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.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 privilege escalation bug fix Red Hat Enterprise Linux kernel system reboot kernel panic

Relevant Releases Architectures

Red Hat CodeReady Linux Builder (v. 8) - aarch64, ppc64le, x86_64

Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

1805135 - CVE-2020-2732 Kernel: kvm: nVMX: L2 guest may trick the L0 hypervisor to access sensitive L1 resources

1825116 - CVE-2020-10711 Kernel: NetLabel: null pointer dereference while receiving CIPSO packet with null category may cause kernel panic

1828149 - CVE-2020-11884 Kernel: s390: page table upgrade in secondary address mode may lead to privilege escalation

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