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Red Hat Security Advisory 2020-2214-01

Red Hat Security Advisory 2020-2214-01
Posted May 19, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2214-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include double free, null pointer, and use-after-free vulnerabilities.

tags | advisory, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2017-18595, CVE-2019-19768, CVE-2020-10711
SHA-256 | 9861ea3ee64da4b2bdb1079921a0a087fea60a45825bdb80bdd0d1c5a068203e

Red Hat Security Advisory 2020-2214-01

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

Synopsis: Important: kernel security update
Advisory ID: RHSA-2020:2214-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:2214
Issue date: 2020-05-19
CVE Names: CVE-2017-18595 CVE-2019-19768 CVE-2020-10711
====================================================================
1. Summary:

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 Linux 7.4 Update Services for SAP
Solutions.

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 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

3. Description:

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

Security Fix(es):

* kernel: double free may be caused by the function allocate_trace_buffer
in the file kernel/trace/trace.c (CVE-2017-18595)

* kernel: use-after-free in __blk_add_trace in kernel/trace/blktrace.c
(CVE-2019-19768)

* Kernel: NetLabel: null pointer dereference while receiving CIPSO packet
with null category may cause kernel panic (CVE-2020-10711)

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.

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/):

1758671 - CVE-2017-18595 kernel: double free may be caused by the function allocate_trace_buffer in the file kernel/trace/trace.c
1786164 - CVE-2019-19768 kernel: use-after-free in __blk_add_trace in kernel/trace/blktrace.c
1825116 - CVE-2020-10711 Kernel: NetLabel: null pointer dereference while receiving CIPSO packet with null category may cause kernel panic

6. Package List:

Red Hat Enterprise Linux Server AUS (v. 7.4):

Source:
kernel-3.10.0-693.67.1.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-693.67.1.el7.noarch.rpm
kernel-doc-3.10.0-693.67.1.el7.noarch.rpm

x86_64:
kernel-3.10.0-693.67.1.el7.x86_64.rpm
kernel-debug-3.10.0-693.67.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-693.67.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-693.67.1.el7.x86_64.rpm
kernel-devel-3.10.0-693.67.1.el7.x86_64.rpm
kernel-headers-3.10.0-693.67.1.el7.x86_64.rpm
kernel-tools-3.10.0-693.67.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-693.67.1.el7.x86_64.rpm
perf-3.10.0-693.67.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm
python-perf-3.10.0-693.67.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm

Red Hat Enterprise Linux Server E4S (v. 7.4):

Source:
kernel-3.10.0-693.67.1.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-693.67.1.el7.noarch.rpm
kernel-doc-3.10.0-693.67.1.el7.noarch.rpm

ppc64le:
kernel-3.10.0-693.67.1.el7.ppc64le.rpm
kernel-bootwrapper-3.10.0-693.67.1.el7.ppc64le.rpm
kernel-debug-3.10.0-693.67.1.el7.ppc64le.rpm
kernel-debug-debuginfo-3.10.0-693.67.1.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-693.67.1.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-693.67.1.el7.ppc64le.rpm
kernel-devel-3.10.0-693.67.1.el7.ppc64le.rpm
kernel-headers-3.10.0-693.67.1.el7.ppc64le.rpm
kernel-tools-3.10.0-693.67.1.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-693.67.1.el7.ppc64le.rpm
kernel-tools-libs-3.10.0-693.67.1.el7.ppc64le.rpm
perf-3.10.0-693.67.1.el7.ppc64le.rpm
perf-debuginfo-3.10.0-693.67.1.el7.ppc64le.rpm
python-perf-3.10.0-693.67.1.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-693.67.1.el7.ppc64le.rpm

x86_64:
kernel-3.10.0-693.67.1.el7.x86_64.rpm
kernel-debug-3.10.0-693.67.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-693.67.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-693.67.1.el7.x86_64.rpm
kernel-devel-3.10.0-693.67.1.el7.x86_64.rpm
kernel-headers-3.10.0-693.67.1.el7.x86_64.rpm
kernel-tools-3.10.0-693.67.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-693.67.1.el7.x86_64.rpm
perf-3.10.0-693.67.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm
python-perf-3.10.0-693.67.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm

Red Hat Enterprise Linux Server TUS (v. 7.4):

Source:
kernel-3.10.0-693.67.1.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-693.67.1.el7.noarch.rpm
kernel-doc-3.10.0-693.67.1.el7.noarch.rpm

x86_64:
kernel-3.10.0-693.67.1.el7.x86_64.rpm
kernel-debug-3.10.0-693.67.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-693.67.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-693.67.1.el7.x86_64.rpm
kernel-devel-3.10.0-693.67.1.el7.x86_64.rpm
kernel-headers-3.10.0-693.67.1.el7.x86_64.rpm
kernel-tools-3.10.0-693.67.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-693.67.1.el7.x86_64.rpm
perf-3.10.0-693.67.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm
python-perf-3.10.0-693.67.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm

Red Hat Enterprise Linux Server Optional AUS (v. 7.4):

x86_64:
kernel-debug-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-693.67.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-693.67.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm

Red Hat Enterprise Linux Server Optional E4S (v. 7.4):

ppc64le:
kernel-debug-debuginfo-3.10.0-693.67.1.el7.ppc64le.rpm
kernel-debug-devel-3.10.0-693.67.1.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-693.67.1.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-693.67.1.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-693.67.1.el7.ppc64le.rpm
kernel-tools-libs-devel-3.10.0-693.67.1.el7.ppc64le.rpm
perf-debuginfo-3.10.0-693.67.1.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-693.67.1.el7.ppc64le.rpm

x86_64:
kernel-debug-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-693.67.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-693.67.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm

Red Hat Enterprise Linux Server Optional TUS (v. 7.4):

x86_64:
kernel-debug-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-693.67.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-693.67.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-693.67.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-693.67.1.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-2017-18595
https://access.redhat.com/security/cve/CVE-2019-19768
https://access.redhat.com/security/cve/CVE-2020-10711
https://access.redhat.com/security/updates/classification/#important

8. Contact:

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

Copyright 2020 Red Hat, Inc.
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