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Red Hat: RHSA-2020-2242-01 Important: Kernel-RT Security Update

red hat
Calendar Grey May 20, 2020
Dist Redhat Esm H88
The latest kernel-rt update from Red Hat addresses vital vulnerabilities and issues, improving overall system protection and reliability.
An update for kernel-rt is now available for Red Hat Enterprise MRG 2

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: double free may be caused by the function allocate_trace_buffer in the file kernel/trace/trace.c (CVE-2017-18595)
* kernel: use-after-free in __blk_add_trace in kernel/trace/blktrace.c (CVE-2019-19768)
* Kernel: NetLabel: null pointer dereference while receiving CIPSO packet with null category may cause kernel panic (CVE-2020-10711)
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):
* update the MRG 2.5.z 3.10 realtime-kernel sources (BZ#1823371)

Topics%20covered

Topics Covered

security advisory security issue Red Hat bug fix important update kernel panic kernel-rt

References

https://access.redhat.com/security/cve/CVE-2017-18595 https://access.redhat.com/security/cve/CVE-2019-19768 https://access.redhat.com/security/cve/CVE-2020-10711 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat MRG Realtime for RHEL 6 Server v.2:
Source: kernel-rt-3.10.0-693.67.1.rt56.665.el6rt.src.rpm
noarch: kernel-rt-doc-3.10.0-693.67.1.rt56.665.el6rt.noarch.rpm kernel-rt-firmware-3.10.0-693.67.1.rt56.665.el6rt.noarch.rpm
x86_64: kernel-rt-3.10.0-693.67.1.rt56.665.el6rt.x86_64.rpm kernel-rt-debug-3.10.0-693.67.1.rt56.665.el6rt.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-693.67.1.rt56.665.el6rt.x86_64.rpm kernel-rt-debug-devel-3.10.0-693.67.1.rt56.665.el6rt.x86_64.rpm kernel-rt-debuginfo-3.10.0-693.67.1.rt56.665.el6rt.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-693.67.1.rt56.665.el6rt.x86_64.rpm kernel-rt-devel-3.10.0-693.67.1.rt56.665.el6rt.x86_64.rpm kernel-rt-trace-3.10.0-693.67.1.rt56.665.el6rt.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-693.67.1.rt56.665.el6rt.x86_64.rpm kernel-rt-trace-devel-3.10.0-693.67.1.rt56.665.el6rt.x86_64.rpm kernel-rt-vanilla-3.10.0-693.67.1.rt56.665.el6rt.x86_64.rpm kernel-rt-vanilla-debuginfo-3.10.0-693.67.1.rt56.665.el6rt.x86_64.rpm kernel-rt-vanilla-devel-3.10.0-693.67.1.rt56.665.el6rt.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:2242-01
Product: Red Hat Enterprise MRG for RHEL-6
Advisory URL: https://access.redhat.com/errata/RHSA-2020:2242
Issue date: 2020-05-20

Topic

An update for kernel-rt is now available for Red Hat Enterprise MRG 2.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 security issue Red Hat bug fix important update kernel panic kernel-rt

Relevant Releases Architectures

Red Hat MRG Realtime for RHEL 6 Server v.2 - noarch, x86_64

Bugs Fixed

1758671 - CVE-2017-18595 kernel: double free may be caused by the function allocate_trace_buffer in the file kernel/trace/trace.c

1786164 - CVE-2019-19768 kernel: use-after-free in __blk_add_trace in kernel/trace/blktrace.c

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

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