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RedHat: RHSA-2019-3967-01 Important: Kernel Security Issues and Fixes

red hat
Calendar Grey November 26, 2019
Dist Redhat Esm H88
The latest kernel update from Red Hat addresses various vulnerabilities and issues, boosting overall security and reliability of systems.
An update for kernel is now available for Red Hat Enterprise Linux 7.5 Extended Update Support

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: Memory corruption due to incorrect socket cloning (CVE-2018-9568)
* kernel: MIDI driver race condition leads to a double-free (CVE-2018-10902)
* kernel: Use-after-free due to race condition in AF_PACKET implementation (CVE-2018-18559)
* Kernel: vhost_net: infinite loop while receiving packets leads to DoS (CVE-2019-3900)
* Kernel: page cache side channel attacks (CVE-2019-5489)
* Kernel: KVM: potential use-after-free via kvm_ioctl_create_device() (CVE-2019-6974)
* Kernel: KVM: nVMX: use-after-free of the hrtimer for emulation of the preemption timer (CVE-2019-7221)
* kernel: Inifinite loop vulnerability in mm/madvise.c:madvise_willneed() function allows local denial of service (CVE-2017-18208)
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):
* A cluster node has multiple hung "mv" processes that are accessing a gfs2 filesystem. (BZ#1716321)
* Growing unreclaimable slab memory (BZ#1741918)
* [LLNL 7.5 Bug] slab leak causing a crash when using kmem control group (BZ#1748236)
* kernel build: parallelize redhat/mod-sign.sh (BZ#1755328)
* kernel build: speed up module compression step (BZ#1755337)

Topics%20covered

Topics Covered

security advisory bug fix DoS Red Hat Enterprise Linux important kernel

References

https://access.redhat.com/security/cve/CVE-2017-18208 https://access.redhat.com/security/cve/CVE-2018-9568 https://access.redhat.com/security/cve/CVE-2018-10902 https://access.redhat.com/security/cve/CVE-2018-18559 https://access.redhat.com/security/cve/CVE-2019-3900 https://access.redhat.com/security/cve/CVE-2019-5489 https://access.redhat.com/security/cve/CVE-2019-6974 https://access.redhat.com/security/cve/CVE-2019-7221 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux ComputeNode EUS (v. 7.5):
Source: kernel-3.10.0-862.44.2.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-862.44.2.el7.noarch.rpm kernel-doc-3.10.0-862.44.2.el7.noarch.rpm
x86_64: kernel-3.10.0-862.44.2.el7.x86_64.rpm kernel-debug-3.10.0-862.44.2.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-862.44.2.el7.x86_64.rpm kernel-debug-devel-3.10.0-862.44.2.el7.x86_64.rpm kernel-debuginfo-3.10.0-862.44.2.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-862.44.2.el7.x86_64.rpm kernel-devel-3.10.0-862.44.2.el7.x86_64.rpm kernel-headers-3.10.0-862.44.2.el7.x86_64.rpm kernel-tools-3.10.0-862.44.2.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-862.44.2.el7.x86_64.rpm kernel-tools-libs-3.10.0-862.44.2.el7.x86_64.rpm perf-3.10.0-862.44.2.el7.x86_64.rpm perf-debuginfo-3.10.0-862.44.2.el7.x86_64.rpm python-perf-3.10.0-862.44.2.el7.x86_64.rpm python-perf-debuginfo-3.10.0-862.44.2.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.5):
x86_64: kernel-debug-debuginfo-3.10.0-862.44.2.el7.x86_64.rpm kernel-debuginfo-3.10.0-862.44.2.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-862.44.2.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-862.44.2.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-862.44.2.el7.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2019:3967-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:3967
Issue date: 2019-11-26

Topic

An update for kernel is now available for Red Hat Enterprise Linux 7.5Extended Update Support.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 bug fix DoS Red Hat Enterprise Linux important kernel

Relevant Releases Architectures

Red Hat Enterprise Linux ComputeNode EUS (v. 7.5) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.5) - x86_64

Red Hat Enterprise Linux Server EUS (v. 7.5) - noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional EUS (v. 7.5) - ppc64, ppc64le, x86_64

Bugs Fixed

1551565 - CVE-2017-18208 kernel: Inifinite loop vulnerability in mm/madvise.c:madvise_willneed() function allows local denial of service

1590720 - CVE-2018-10902 kernel: MIDI driver race condition leads to a double-free

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

1655904 - CVE-2018-9568 kernel: Memory corruption due to incorrect socket cloning

1664110 - CVE-2019-5489 Kernel: page cache side channel attacks

1671904 - CVE-2019-7221 Kernel: KVM: nVMX: use-after-free of the hrtimer for emulation of the preemption timer

1671913 - CVE-2019-6974 Kernel: KVM: potential use-after-free via kvm_ioctl_create_device()

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

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