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Red Hat Enterprise Linux 7.4 RHSA-2019:4058 Important: Kernel Security Fix

red hat
Calendar Grey December 3, 2019
Dist Redhat Esm H88
Kernel security enhancement launched for Red Hat Linux 7.4. Incorporates multiple bug resolutions and essential security updates.
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: vhost_net: infinite loop while receiving packets leads to DoS (CVE-2019-3900)
* Kernel: page cache side channel attacks (CVE-2019-5489)
* Kernel: KVM: nVMX: use-after-free of the hrtimer for emulation of the preemption timer (CVE-2019-7221)
* kernel: Handling of might_cancel queueing is not properly pretected against race (CVE-2017-10661)
* kernel: Inifinite loop vulnerability in mm/madvise.c:madvise_willneed() function allows local denial of service (CVE-2017-18208)
* kernel: use-after-free in drivers/char/ipmi/ipmi_si_intf.c, ipmi_si_mem_io.c, ipmi_si_port_io.c (CVE-2019-11811)
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):
* [LLNL 7.5 Bug] slab leak causing a crash when using kmem control group (BZ#1748234)
* kmem, memcg: system crash due to cache destruction race (BZ#1754829)
* kernel build: parallelize redhat/mod-sign.sh (BZ#1755327)
* kernel build: speed up module compression step (BZ#1755336)

Topics%20covered

Topics Covered

security advisory Red Hat bug fix DoS important kernel impact

References

https://access.redhat.com/security/cve/CVE-2017-10661 https://access.redhat.com/security/cve/CVE-2017-18208 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-2019-7221 https://access.redhat.com/security/cve/CVE-2019-11811 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Server AUS (v. 7.4):
Source: kernel-3.10.0-693.61.1.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-693.61.1.el7.noarch.rpm kernel-doc-3.10.0-693.61.1.el7.noarch.rpm
x86_64: kernel-3.10.0-693.61.1.el7.x86_64.rpm kernel-debug-3.10.0-693.61.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-693.61.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-693.61.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.61.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.61.1.el7.x86_64.rpm kernel-devel-3.10.0-693.61.1.el7.x86_64.rpm kernel-headers-3.10.0-693.61.1.el7.x86_64.rpm kernel-tools-3.10.0-693.61.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.61.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-693.61.1.el7.x86_64.rpm perf-3.10.0-693.61.1.el7.x86_64.rpm perf-debuginfo-3.10.0-693.61.1.el7.x86_64.rpm python-perf-3.10.0-693.61.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.61.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server E4S (v. 7.4):
Source: kernel-3.10.0-693.61.1.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-693.61.1.el7.noarch.rpm kernel-doc-3.10.0-693.61.1.el7.noarch.rpm
ppc64le: kernel-3.10.0-693.61.1.el7.ppc64le.rpm kernel-bootwrapper-3.10.0-693.61.1.el7.ppc64le.rpm kernel-debug-3.10.0-693.61.1.el7.ppc64le.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2019:4058-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:4058
Issue date: 2019-12-03

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 Red Hat bug fix DoS important kernel impact

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

1481136 - CVE-2017-10661 kernel: Handling of might_cancel queueing is not properly pretected against race

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

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

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

1709180 - CVE-2019-11811 kernel: use-after-free in drivers/char/ipmi/ipmi_si_intf.c, ipmi_si_mem_io.c, ipmi_si_port_io.c

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