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Alerts This Week
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Red Hat: RHSA-2020-2428-01 Important Kernel-RT Security Update

red hat
Calendar Grey June 9, 2020
Dist Redhat Esm H88
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ====================================================
An update for kernel-rt 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-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
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):
* kernel: hw: provide reporting and microcode mitigation toggle for CVE-2020-0543 / Special Register Buffer Data Sampling (SRBDS) (BZ#1827193)
* kernel-rt: update RT source tree to the RHEL-8.2.z1 source tree (BZ#1816271)

Topics%20covered

Topics Covered

security advisory Red Hat bug fix security impact important update kernel-rt real-time kernel

References

https://access.redhat.com/security/cve/CVE-2020-12657 https://access.redhat.com/security/updates/classification#important https://access.redhat.com/solutions/5142691

Package List

Red Hat Enterprise Linux Real Time for NFV (v. 8):
Source: kernel-rt-4.18.0-193.6.3.rt13.59.el8_2.src.rpm
x86_64: kernel-rt-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm kernel-rt-core-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm kernel-rt-debug-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm kernel-rt-debug-core-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm kernel-rt-debug-devel-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm kernel-rt-debug-kvm-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm kernel-rt-debug-modules-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm kernel-rt-debuginfo-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm kernel-rt-devel-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm kernel-rt-kvm-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm kernel-rt-modules-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm kernel-rt-modules-extra-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm
Red Hat Enterprise Linux Real Time (v. 8):
Source: kernel-rt-4.18.0-193.6.3.rt13.59.el8_2.src.rpm
x86_64: kernel-rt-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm kernel-rt-core-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm kernel-rt-debug-4.18.0-193.6.3.rt13.59.el8_2.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:2428-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:2428
Issue date: 2020-06-09

Topic

An update for kernel-rt 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 Red Hat bug fix security impact important update kernel-rt real-time kernel

Relevant Releases Architectures

Red Hat Enterprise Linux Real Time (v. 8) - x86_64

Red Hat Enterprise Linux Real Time for NFV (v. 8) - x86_64

Bugs Fixed

1832866 - CVE-2020-12657 kernel: use-after-free in block/bfq-iosched.c related to bfq_idle_slice_timer_body

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