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Red Hat Enterprise Linux 7 RHSA-2019:0163-01 Critical Kernel Security Fix

red hat
Calendar Grey January 29, 2019
Dist Redhat Esm H88
A significant update for the Red Hat kernel introduces critical patches and improvements aimed at effectively reducing security vulnerabilities.
An update for kernel is now available for Red Hat Enterprise Linux 7

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 due to race condition in AF_PACKET implementation (CVE-2018-18559)
* kernel: userfaultfd bypasses tmpfs file permissions (CVE-2018-18397)
For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.
Bug Fix(es):
These updated kernel packages include also numerous bug fixes and enhancements. Space precludes documenting all of the bug fixes in this advisory. See the descriptions in the related Knowledge Article: https://access.redhat.com/articles/3827321

Topics%20covered

Topics Covered

security advisory Red Hat bug fix important kernel security impact Linux

References

https://access.redhat.com/security/cve/CVE-2018-18397 https://access.redhat.com/security/cve/CVE-2018-18559 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: kernel-3.10.0-957.5.1.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-957.5.1.el7.noarch.rpm kernel-doc-3.10.0-957.5.1.el7.noarch.rpm
x86_64: bpftool-3.10.0-957.5.1.el7.x86_64.rpm kernel-3.10.0-957.5.1.el7.x86_64.rpm kernel-debug-3.10.0-957.5.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-957.5.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.5.1.el7.x86_64.rpm kernel-devel-3.10.0-957.5.1.el7.x86_64.rpm kernel-headers-3.10.0-957.5.1.el7.x86_64.rpm kernel-tools-3.10.0-957.5.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-957.5.1.el7.x86_64.rpm perf-3.10.0-957.5.1.el7.x86_64.rpm perf-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm python-perf-3.10.0-957.5.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: kernel-debug-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.5.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.5.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-957.5.1.el7.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2019:0163-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:0163
Issue date: 2019-01-29

Topic

An update for kernel is now available for Red Hat Enterprise Linux 7.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 important kernel security impact Linux

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64

Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

Bugs Fixed

1641548 - CVE-2018-18397 kernel: userfaultfd bypasses tmpfs file permissions

1641878 - CVE-2018-18559 kernel: Use-after-free due to race condition in AF_PACKET implementation

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