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Red Hat: RHSA-2019-3836-01 Important: Kernel Security and DoS Issues

red hat
Calendar Grey November 12, 2019
Dist Redhat Esm H88
The recent kernel security patch from Red Hat targets critical vulnerabilities within the Enterprise Linux 7 framework.
An update for kernel is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Important

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):
* hw: Machine Check Error on Page Size Change (IFU) (CVE-2018-12207)
* hw: TSX Transaction Asynchronous Abort (TAA) (CVE-2019-11135)
* Kernel: vhost_net: infinite loop while receiving packets leads to DoS (CVE-2019-3900)
* hw: Intel GPU Denial Of Service while accessing MMIO in lower power state (CVE-2019-0154)
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):
* [Intel 6.10 Bug] With mWait/C-states disabled, HT on, ibrs enabled, performance impact observed on user space benchmark (BZ#1560787)
* kernel-2.6.32-573.60.2.el6 hangs/resets during boot in efi_enter_virtual_mode() on Xeon v2 E7-2870 (BZ#1645724)
* Slab leak: skbuff_head_cache slab object still allocated after mcast processes are stopped and "fragments dropped after timeout" errors are shown (BZ#1752536)

Topics%20covered

Topics Covered

security advisory kernel update bug fix DoS Red Hat Enterprise Linux important kernel

References

https://access.redhat.com/security/cve/CVE-2018-12207 https://access.redhat.com/security/cve/CVE-2019-0154 https://access.redhat.com/security/cve/CVE-2019-3900 https://access.redhat.com/security/cve/CVE-2019-11135 https://access.redhat.com/security/updates/classification#important https://access.redhat.com/security/vulnerabilities/ifu-page-mce https://access.redhat.com/articles/tsx-asynchronousabort https://access.redhat.com/solutions/i915-graphics

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source: kernel-2.6.32-754.24.2.el6.src.rpm
i386: kernel-2.6.32-754.24.2.el6.i686.rpm kernel-debug-2.6.32-754.24.2.el6.i686.rpm kernel-debug-debuginfo-2.6.32-754.24.2.el6.i686.rpm kernel-debug-devel-2.6.32-754.24.2.el6.i686.rpm kernel-debuginfo-2.6.32-754.24.2.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-754.24.2.el6.i686.rpm kernel-devel-2.6.32-754.24.2.el6.i686.rpm kernel-headers-2.6.32-754.24.2.el6.i686.rpm perf-2.6.32-754.24.2.el6.i686.rpm perf-debuginfo-2.6.32-754.24.2.el6.i686.rpm python-perf-debuginfo-2.6.32-754.24.2.el6.i686.rpm
noarch: kernel-abi-whitelists-2.6.32-754.24.2.el6.noarch.rpm kernel-doc-2.6.32-754.24.2.el6.noarch.rpm kernel-firmware-2.6.32-754.24.2.el6.noarch.rpm
x86_64: kernel-2.6.32-754.24.2.el6.x86_64.rpm kernel-debug-2.6.32-754.24.2.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-754.24.2.el6.i686.rpm kernel-debug-debuginfo-2.6.32-754.24.2.el6.x86_64.rpm kernel-debug-devel-2.6.32-754.24.2.el6.i686.rpm kernel-debug-devel-2.6.32-754.24.2.el6.x86_64.rpm kernel-debuginfo-2.6.32-754.24.2.el6.i686.rpm kernel-debuginfo-2.6.32-754.24.2.el6.x86_64.rpm kernel-debuginfo-common-i686-2.6.32-754.24.2.el6.i686.rpm kernel-debuginfo-common-x86_64-2.6.32-754.24.2.el6.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2019:3836-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:3836
Issue date: 2019-11-12

Topic

An update for kernel is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory kernel update bug fix DoS Red Hat Enterprise Linux important kernel

Relevant Releases Architectures

Red Hat Enterprise Linux Desktop (v. 6) - i386, noarch, x86_64

Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64

Red Hat Enterprise Linux HPC Node (v. 6) - noarch, x86_64

Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, noarch, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, noarch, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

Bugs Fixed

1646768 - CVE-2018-12207 hw: Machine Check Error on Page Size Change (IPU)

1698757 - CVE-2019-3900 Kernel: vhost_net: infinite loop while receiving packets leads to DoS

1724393 - CVE-2019-0154 hw: Intel GPU Denial Of Service while accessing MMIO in lower power state

1753062 - CVE-2019-11135 hw: TSX Transaction Asynchronous Abort (TAA)

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