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Red Hat 7.4: RHSA-2020:2214-01 Important: Kernel Security Issues

red hat
Calendar Grey May 19, 2020
Dist Redhat Esm H88
Urgent kernel upgrade released for Red Hat Enterprise Linux addressing significant vulnerabilities that could pose risks.
An update for kernel is now available for Red Hat Enterprise Linux 7.4 Advanced Update Support, Red Hat Enterprise Linux 7.4 Telco Extended Update Support, and Red Hat Enterprise L...

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: 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.

Topics%20covered

Topics Covered

security advisory security issue Red Hat update important kernel system restart

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 Enterprise Linux Server AUS (v. 7.4):
Source: kernel-3.10.0-693.67.1.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-693.67.1.el7.noarch.rpm kernel-doc-3.10.0-693.67.1.el7.noarch.rpm
x86_64: kernel-3.10.0-693.67.1.el7.x86_64.rpm kernel-debug-3.10.0-693.67.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-693.67.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.67.1.el7.x86_64.rpm kernel-devel-3.10.0-693.67.1.el7.x86_64.rpm kernel-headers-3.10.0-693.67.1.el7.x86_64.rpm kernel-tools-3.10.0-693.67.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-693.67.1.el7.x86_64.rpm perf-3.10.0-693.67.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm python-perf-3.10.0-693.67.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server E4S (v. 7.4):
Source: kernel-3.10.0-693.67.1.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-693.67.1.el7.noarch.rpm kernel-doc-3.10.0-693.67.1.el7.noarch.rpm
ppc64le: kernel-3.10.0-693.67.1.el7.ppc64le.rpm kernel-bootwrapper-3.10.0-693.67.1.el7.ppc64le.rpm kernel-debug-3.10.0-693.67.1.el7.ppc64le.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:2214-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:2214
Issue date: 2020-05-19

Topic

An update for kernel is now available for Red Hat Enterprise Linux 7.4Advanced Update Support, Red Hat Enterprise Linux 7.4 Telco Extended UpdateSupport, and Red Hat Enterprise Linux 7.4 Update Services for SAPSolutions.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 update important kernel system restart

Relevant Releases Architectures

Red Hat Enterprise Linux Server AUS (v. 7.4) - noarch, x86_64

Red Hat Enterprise Linux Server E4S (v. 7.4) - noarch, ppc64le, x86_64

Red Hat Enterprise Linux Server Optional AUS (v. 7.4) - x86_64

Red Hat Enterprise Linux Server Optional E4S (v. 7.4) - ppc64le, x86_64

Red Hat Enterprise Linux Server Optional TUS (v. 7.4) - x86_64

Red Hat Enterprise Linux Server TUS (v. 7.4) - 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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