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RedHat 7.6: RHSA-2020-2851-01 Important Kernel Security Update

Calendar Jul 07, 2020 • User Avatar LinuxSecurity Advisories
6 - 12 min read
Redhat Large Esm H500
Topics%20covered

Topics Covered

security advisory denial of service kernel update bug fix important memory access redhat
An update for kernel is now available for Red Hat Enterprise Linux 7.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, 
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

====================================================================                   Red Hat Security Advisory

Synopsis:          Important: kernel security and bug fix update
Advisory ID:       RHSA-2020:2851-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2020:2851
Issue date:        2020-07-07
CVE Names:         CVE-2018-7191 CVE-2018-20169 CVE-2019-3901 
                   CVE-2019-11487 CVE-2019-13233 CVE-2019-14821 
                   CVE-2019-15916 CVE-2019-18660 CVE-2020-12888 
====================================================================
1. Summary:

An update for kernel is now available for Red Hat Enterprise Linux 7.6
Extended Update Support.

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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) - noarch, x86_64
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) - x86_64
Red Hat Enterprise Linux Server EUS (v. 7.6) - noarch, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional EUS (v. 7.6) - ppc64, ppc64le, x86_64

3. Description:

The kernel packages contain the Linux kernel, the core of any Linux
operating system.

Security Fix(es):

* kernel: Count overflow in FUSE request leading to use-after-free issues.
(CVE-2019-11487)

* Kernel: KVM: OOB memory access via mmio ring buffer (CVE-2019-14821)

* Kernel: vfio: access to disabled MMIO space of some devices may lead to
DoS scenario (CVE-2020-12888)

* kernel: denial of service via ioctl call in network tun handling
(CVE-2018-7191)

* kernel: usb: missing size check in the __usb_get_extra_descriptor()
leading to DoS (CVE-2018-20169)

* kernel: perf_event_open() and execve() race in setuid programs allows a
data leak (CVE-2019-3901)

* kernel: use-after-free in arch/x86/lib/insn-eval.c (CVE-2019-13233)

* kernel: memory leak in register_queue_kobjects() in net/core/net-sysfs.c
leads to denial of service (CVE-2019-15916)

* kernel: powerpc: incomplete Spectre-RSB mitigation leads to information
exposure (CVE-2019-18660)

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):

* kernel: hw: provide reporting and microcode mitigation toggle for
CVE-2020-0543 / Special Register Buffer Data Sampling (SRBDS) (BZ#1840677)

4. 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.

5. Bugs fixed (https://bugzilla.redhat.com/):

1660385 - CVE-2018-20169 kernel: usb: missing size check in the __usb_get_extra_descriptor() leading to DoS
1701245 - CVE-2019-3901 kernel: perf_event_open() and execve() race in setuid programs allows a data leak
1703063 - CVE-2019-11487 kernel: Count overflow in FUSE request leading to use-after-free issues.
1716328 - CVE-2018-7191 kernel: denial of service via ioctl call in network tun handling
1727756 - CVE-2019-13233 kernel: use-after-free in arch/x86/lib/insn-eval.c
1746708 - CVE-2019-14821 Kernel: KVM: OOB memory access via mmio ring buffer
1750813 - CVE-2019-15916 kernel: memory leak in register_queue_kobjects() in net/core/net-sysfs.c leads to denial of service
1777825 - CVE-2019-18660 kernel: powerpc: incomplete Spectre-RSB mitigation leads to information exposure
1836244 - CVE-2020-12888 Kernel: vfio: access to disabled MMIO space of some devices may lead to DoS scenario

6. Package List:

Red Hat Enterprise Linux ComputeNode EUS (v. 7.6):

Source:
kernel-3.10.0-957.56.1.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-957.56.1.el7.noarch.rpm
kernel-doc-3.10.0-957.56.1.el7.noarch.rpm

x86_64:
bpftool-3.10.0-957.56.1.el7.x86_64.rpm
kernel-3.10.0-957.56.1.el7.x86_64.rpm
kernel-debug-3.10.0-957.56.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-957.56.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-957.56.1.el7.x86_64.rpm
kernel-devel-3.10.0-957.56.1.el7.x86_64.rpm
kernel-headers-3.10.0-957.56.1.el7.x86_64.rpm
kernel-tools-3.10.0-957.56.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-957.56.1.el7.x86_64.rpm
perf-3.10.0-957.56.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm
python-perf-3.10.0-957.56.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6):

x86_64:
kernel-debug-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-957.56.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-957.56.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm

Red Hat Enterprise Linux Server EUS (v. 7.6):

Source:
kernel-3.10.0-957.56.1.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-957.56.1.el7.noarch.rpm
kernel-doc-3.10.0-957.56.1.el7.noarch.rpm

ppc64:
kernel-3.10.0-957.56.1.el7.ppc64.rpm
kernel-bootwrapper-3.10.0-957.56.1.el7.ppc64.rpm
kernel-debug-3.10.0-957.56.1.el7.ppc64.rpm
kernel-debug-debuginfo-3.10.0-957.56.1.el7.ppc64.rpm
kernel-debug-devel-3.10.0-957.56.1.el7.ppc64.rpm
kernel-debuginfo-3.10.0-957.56.1.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-957.56.1.el7.ppc64.rpm
kernel-devel-3.10.0-957.56.1.el7.ppc64.rpm
kernel-headers-3.10.0-957.56.1.el7.ppc64.rpm
kernel-tools-3.10.0-957.56.1.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-957.56.1.el7.ppc64.rpm
kernel-tools-libs-3.10.0-957.56.1.el7.ppc64.rpm
perf-3.10.0-957.56.1.el7.ppc64.rpm
perf-debuginfo-3.10.0-957.56.1.el7.ppc64.rpm
python-perf-3.10.0-957.56.1.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-957.56.1.el7.ppc64.rpm

ppc64le:
kernel-3.10.0-957.56.1.el7.ppc64le.rpm
kernel-bootwrapper-3.10.0-957.56.1.el7.ppc64le.rpm
kernel-debug-3.10.0-957.56.1.el7.ppc64le.rpm
kernel-debug-debuginfo-3.10.0-957.56.1.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-957.56.1.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-957.56.1.el7.ppc64le.rpm
kernel-devel-3.10.0-957.56.1.el7.ppc64le.rpm
kernel-headers-3.10.0-957.56.1.el7.ppc64le.rpm
kernel-tools-3.10.0-957.56.1.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-957.56.1.el7.ppc64le.rpm
kernel-tools-libs-3.10.0-957.56.1.el7.ppc64le.rpm
perf-3.10.0-957.56.1.el7.ppc64le.rpm
perf-debuginfo-3.10.0-957.56.1.el7.ppc64le.rpm
python-perf-3.10.0-957.56.1.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-957.56.1.el7.ppc64le.rpm

s390x:
kernel-3.10.0-957.56.1.el7.s390x.rpm
kernel-debug-3.10.0-957.56.1.el7.s390x.rpm
kernel-debug-debuginfo-3.10.0-957.56.1.el7.s390x.rpm
kernel-debug-devel-3.10.0-957.56.1.el7.s390x.rpm
kernel-debuginfo-3.10.0-957.56.1.el7.s390x.rpm
kernel-debuginfo-common-s390x-3.10.0-957.56.1.el7.s390x.rpm
kernel-devel-3.10.0-957.56.1.el7.s390x.rpm
kernel-headers-3.10.0-957.56.1.el7.s390x.rpm
kernel-kdump-3.10.0-957.56.1.el7.s390x.rpm
kernel-kdump-debuginfo-3.10.0-957.56.1.el7.s390x.rpm
kernel-kdump-devel-3.10.0-957.56.1.el7.s390x.rpm
perf-3.10.0-957.56.1.el7.s390x.rpm
perf-debuginfo-3.10.0-957.56.1.el7.s390x.rpm
python-perf-3.10.0-957.56.1.el7.s390x.rpm
python-perf-debuginfo-3.10.0-957.56.1.el7.s390x.rpm

x86_64:
bpftool-3.10.0-957.56.1.el7.x86_64.rpm
kernel-3.10.0-957.56.1.el7.x86_64.rpm
kernel-debug-3.10.0-957.56.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-957.56.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-957.56.1.el7.x86_64.rpm
kernel-devel-3.10.0-957.56.1.el7.x86_64.rpm
kernel-headers-3.10.0-957.56.1.el7.x86_64.rpm
kernel-tools-3.10.0-957.56.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-957.56.1.el7.x86_64.rpm
perf-3.10.0-957.56.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm
python-perf-3.10.0-957.56.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm

Red Hat Enterprise Linux Server Optional EUS (v. 7.6):

ppc64:
kernel-debug-debuginfo-3.10.0-957.56.1.el7.ppc64.rpm
kernel-debuginfo-3.10.0-957.56.1.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-957.56.1.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-957.56.1.el7.ppc64.rpm
kernel-tools-libs-devel-3.10.0-957.56.1.el7.ppc64.rpm
perf-debuginfo-3.10.0-957.56.1.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-957.56.1.el7.ppc64.rpm

ppc64le:
kernel-debug-debuginfo-3.10.0-957.56.1.el7.ppc64le.rpm
kernel-debug-devel-3.10.0-957.56.1.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-957.56.1.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-957.56.1.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-957.56.1.el7.ppc64le.rpm
kernel-tools-libs-devel-3.10.0-957.56.1.el7.ppc64le.rpm
perf-debuginfo-3.10.0-957.56.1.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-957.56.1.el7.ppc64le.rpm

x86_64:
kernel-debug-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-957.56.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-957.56.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key

7. References:

https://access.redhat.com/security/cve/CVE-2018-7191
https://access.redhat.com/security/cve/CVE-2018-20169
https://access.redhat.com/security/cve/CVE-2019-3901
https://access.redhat.com/security/cve/CVE-2019-11487
https://access.redhat.com/security/cve/CVE-2019-13233
https://access.redhat.com/security/cve/CVE-2019-14821
https://access.redhat.com/security/cve/CVE-2019-15916
https://access.redhat.com/security/cve/CVE-2019-18660
https://access.redhat.com/security/cve/CVE-2020-12888
https://access.redhat.com/security/updates/classification#important
https://access.redhat.com/solutions/5142691

8. Contact:

The Red Hat security contact is . More contact
details at https://access.redhat.com/security/team/contact

Copyright 2020 Red Hat, Inc.
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RedHat 7.6: RHSA-2020-2851-01 Important Kernel Security Update

red hat
Calendar Grey July 7, 2020
Dist Redhat Esm H88
Essential kernel patch for Red Hat 7.6 tackling several significant security vulnerabilities and resolving various bugs.
An update for kernel is now available for Red Hat Enterprise Linux 7.6 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: Count overflow in FUSE request leading to use-after-free issues. (CVE-2019-11487)
* Kernel: KVM: OOB memory access via mmio ring buffer (CVE-2019-14821)
* Kernel: vfio: access to disabled MMIO space of some devices may lead to DoS scenario (CVE-2020-12888)
* kernel: denial of service via ioctl call in network tun handling (CVE-2018-7191)
* kernel: usb: missing size check in the __usb_get_extra_descriptor() leading to DoS (CVE-2018-20169)
* kernel: perf_event_open() and execve() race in setuid programs allows a data leak (CVE-2019-3901)
* kernel: use-after-free in arch/x86/lib/insn-eval.c (CVE-2019-13233)
* kernel: memory leak in register_queue_kobjects() in net/core/net-sysfs.c leads to denial of service (CVE-2019-15916)
* kernel: powerpc: incomplete Spectre-RSB mitigation leads to information exposure (CVE-2019-18660)
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):
* kernel: hw: provide reporting and microcode mitigation toggle for CVE-2020-0543 / Special Register Buffer Data Sampling (SRBDS) (BZ#1840677)

Topics%20covered

Topics Covered

security advisory denial of service kernel update bug fix important memory access redhat

References

https://access.redhat.com/security/cve/CVE-2018-7191 https://access.redhat.com/security/cve/CVE-2018-20169 https://access.redhat.com/security/cve/CVE-2019-3901 https://access.redhat.com/security/cve/CVE-2019-11487 https://access.redhat.com/security/cve/CVE-2019-13233 https://access.redhat.com/security/cve/CVE-2019-14821 https://access.redhat.com/security/cve/CVE-2019-15916 https://access.redhat.com/security/cve/CVE-2019-18660 https://access.redhat.com/security/cve/CVE-2020-12888 https://access.redhat.com/security/updates/classification#important https://access.redhat.com/solutions/5142691

Package List

Red Hat Enterprise Linux ComputeNode EUS (v. 7.6):
Source: kernel-3.10.0-957.56.1.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-957.56.1.el7.noarch.rpm kernel-doc-3.10.0-957.56.1.el7.noarch.rpm
x86_64: bpftool-3.10.0-957.56.1.el7.x86_64.rpm kernel-3.10.0-957.56.1.el7.x86_64.rpm kernel-debug-3.10.0-957.56.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-957.56.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.56.1.el7.x86_64.rpm kernel-devel-3.10.0-957.56.1.el7.x86_64.rpm kernel-headers-3.10.0-957.56.1.el7.x86_64.rpm kernel-tools-3.10.0-957.56.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-957.56.1.el7.x86_64.rpm perf-3.10.0-957.56.1.el7.x86_64.rpm perf-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm python-perf-3.10.0-957.56.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6):
x86_64: kernel-debug-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.56.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.56.1.el7.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:2851-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:2851
Issue date: 2020-07-07

Topic

An update for kernel is now available for Red Hat Enterprise Linux 7.6Extended 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 denial of service kernel update bug fix important memory access redhat

Relevant Releases Architectures

Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) - x86_64

Red Hat Enterprise Linux Server EUS (v. 7.6) - noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional EUS (v. 7.6) - ppc64, ppc64le, x86_64

Bugs Fixed

1660385 - CVE-2018-20169 kernel: usb: missing size check in the __usb_get_extra_descriptor() leading to DoS

1701245 - CVE-2019-3901 kernel: perf_event_open() and execve() race in setuid programs allows a data leak

1703063 - CVE-2019-11487 kernel: Count overflow in FUSE request leading to use-after-free issues.

1716328 - CVE-2018-7191 kernel: denial of service via ioctl call in network tun handling

1727756 - CVE-2019-13233 kernel: use-after-free in arch/x86/lib/insn-eval.c

1746708 - CVE-2019-14821 Kernel: KVM: OOB memory access via mmio ring buffer

1750813 - CVE-2019-15916 kernel: memory leak in register_queue_kobjects() in net/core/net-sysfs.c leads to denial of service

1777825 - CVE-2019-18660 kernel: powerpc: incomplete Spectre-RSB mitigation leads to information exposure

1836244 - CVE-2020-12888 Kernel: vfio: access to disabled MMIO space of some devices may lead to DoS scenario

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