Protect yourself against future threats.
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===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2020.2500
kernel security, bug fix, and enhancement update
22 July 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: kernel
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 7
Impact/Access: Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-12888 CVE-2020-0543 CVE-2019-13648
Reference: ESB-2020.2330
ESB-2019.3009
Original Bulletin:
https://access.redhat.com/errata/RHSA-2020:3019
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=====================================================================
Red Hat Security Advisory
Synopsis: Important: kernel security, bug fix, and enhancement update
Advisory ID: RHSA-2020:3019-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:3019
Issue date: 2020-07-21
CVE Names: CVE-2019-13648 CVE-2020-12888
=====================================================================
1. Summary:
An update for kernel is now available for Red Hat Enterprise Linux 7.7
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. 7.7) - noarch, x86_64
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7) - x86_64
Red Hat Enterprise Linux Server EUS (v. 7.7) - noarch, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional EUS (v. 7.7) - ppc64, ppc64le, x86_64
3. Description:
The kernel packages contain the Linux kernel, the core of any Linux
operating system.
Security Fix(es):
* Kernel: vfio: access to disabled MMIO space of some devices may lead to
DoS scenario (CVE-2020-12888)
* kernel: denial of service in arch/powerpc/kernel/signal_32.c and
arch/powerpc/kernel/signal_64.c via sigreturn() system call
(CVE-2019-13648)
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#1840678)
* Deadlock condition grabbing ssb_state lock (BZ#1841120)
* ext4: change LRU to round-robin in extent status tree shrinker
(BZ#1847342)
* Emulex lpfc seems to get hung up failing IOCB'S continuously on kernel
3.10.0-957.21.3.el7.x86_64 leading to Oracle evictions (BZ#1849650)
* After upgrade to 3.9.89 pod containers with CPU limits fail to start due
to cgroup error (BZ#1850499)
Enhancement(s):
* [Marvell 7.8 FEAT] Update bnx2fc driver to latest upstream (BZ#1834817)
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/):
1735630 - CVE-2019-13648 kernel: denial of service in arch/powerpc/kernel/signal_32.c and arch/powerpc/kernel/signal_64.c via sigreturn() system call
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. 7.7):
Source:
kernel-3.10.0-1062.30.1.el7.src.rpm
noarch:
kernel-abi-whitelists-3.10.0-1062.30.1.el7.noarch.rpm
kernel-doc-3.10.0-1062.30.1.el7.noarch.rpm
x86_64:
bpftool-3.10.0-1062.30.1.el7.x86_64.rpm
bpftool-debuginfo-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-debug-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-devel-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-headers-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-tools-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-1062.30.1.el7.x86_64.rpm
perf-3.10.0-1062.30.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-1062.30.1.el7.x86_64.rpm
python-perf-3.10.0-1062.30.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-1062.30.1.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7):
x86_64:
bpftool-debuginfo-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-1062.30.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-1062.30.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-1062.30.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server EUS (v. 7.7):
Source:
kernel-3.10.0-1062.30.1.el7.src.rpm
noarch:
kernel-abi-whitelists-3.10.0-1062.30.1.el7.noarch.rpm
kernel-doc-3.10.0-1062.30.1.el7.noarch.rpm
ppc64:
bpftool-3.10.0-1062.30.1.el7.ppc64.rpm
bpftool-debuginfo-3.10.0-1062.30.1.el7.ppc64.rpm
kernel-3.10.0-1062.30.1.el7.ppc64.rpm
kernel-bootwrapper-3.10.0-1062.30.1.el7.ppc64.rpm
kernel-debug-3.10.0-1062.30.1.el7.ppc64.rpm
kernel-debug-debuginfo-3.10.0-1062.30.1.el7.ppc64.rpm
kernel-debug-devel-3.10.0-1062.30.1.el7.ppc64.rpm
kernel-debuginfo-3.10.0-1062.30.1.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-1062.30.1.el7.ppc64.rpm
kernel-devel-3.10.0-1062.30.1.el7.ppc64.rpm
kernel-headers-3.10.0-1062.30.1.el7.ppc64.rpm
kernel-tools-3.10.0-1062.30.1.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-1062.30.1.el7.ppc64.rpm
kernel-tools-libs-3.10.0-1062.30.1.el7.ppc64.rpm
perf-3.10.0-1062.30.1.el7.ppc64.rpm
perf-debuginfo-3.10.0-1062.30.1.el7.ppc64.rpm
python-perf-3.10.0-1062.30.1.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-1062.30.1.el7.ppc64.rpm
ppc64le:
bpftool-3.10.0-1062.30.1.el7.ppc64le.rpm
bpftool-debuginfo-3.10.0-1062.30.1.el7.ppc64le.rpm
kernel-3.10.0-1062.30.1.el7.ppc64le.rpm
kernel-bootwrapper-3.10.0-1062.30.1.el7.ppc64le.rpm
kernel-debug-3.10.0-1062.30.1.el7.ppc64le.rpm
kernel-debug-debuginfo-3.10.0-1062.30.1.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-1062.30.1.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-1062.30.1.el7.ppc64le.rpm
kernel-devel-3.10.0-1062.30.1.el7.ppc64le.rpm
kernel-headers-3.10.0-1062.30.1.el7.ppc64le.rpm
kernel-tools-3.10.0-1062.30.1.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-1062.30.1.el7.ppc64le.rpm
kernel-tools-libs-3.10.0-1062.30.1.el7.ppc64le.rpm
perf-3.10.0-1062.30.1.el7.ppc64le.rpm
perf-debuginfo-3.10.0-1062.30.1.el7.ppc64le.rpm
python-perf-3.10.0-1062.30.1.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-1062.30.1.el7.ppc64le.rpm
s390x:
bpftool-3.10.0-1062.30.1.el7.s390x.rpm
bpftool-debuginfo-3.10.0-1062.30.1.el7.s390x.rpm
kernel-3.10.0-1062.30.1.el7.s390x.rpm
kernel-debug-3.10.0-1062.30.1.el7.s390x.rpm
kernel-debug-debuginfo-3.10.0-1062.30.1.el7.s390x.rpm
kernel-debug-devel-3.10.0-1062.30.1.el7.s390x.rpm
kernel-debuginfo-3.10.0-1062.30.1.el7.s390x.rpm
kernel-debuginfo-common-s390x-3.10.0-1062.30.1.el7.s390x.rpm
kernel-devel-3.10.0-1062.30.1.el7.s390x.rpm
kernel-headers-3.10.0-1062.30.1.el7.s390x.rpm
kernel-kdump-3.10.0-1062.30.1.el7.s390x.rpm
kernel-kdump-debuginfo-3.10.0-1062.30.1.el7.s390x.rpm
kernel-kdump-devel-3.10.0-1062.30.1.el7.s390x.rpm
perf-3.10.0-1062.30.1.el7.s390x.rpm
perf-debuginfo-3.10.0-1062.30.1.el7.s390x.rpm
python-perf-3.10.0-1062.30.1.el7.s390x.rpm
python-perf-debuginfo-3.10.0-1062.30.1.el7.s390x.rpm
x86_64:
bpftool-3.10.0-1062.30.1.el7.x86_64.rpm
bpftool-debuginfo-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-debug-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-devel-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-headers-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-tools-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-1062.30.1.el7.x86_64.rpm
perf-3.10.0-1062.30.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-1062.30.1.el7.x86_64.rpm
python-perf-3.10.0-1062.30.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-1062.30.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server Optional EUS (v. 7.7):
ppc64:
bpftool-debuginfo-3.10.0-1062.30.1.el7.ppc64.rpm
kernel-debug-debuginfo-3.10.0-1062.30.1.el7.ppc64.rpm
kernel-debuginfo-3.10.0-1062.30.1.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-1062.30.1.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-1062.30.1.el7.ppc64.rpm
kernel-tools-libs-devel-3.10.0-1062.30.1.el7.ppc64.rpm
perf-debuginfo-3.10.0-1062.30.1.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-1062.30.1.el7.ppc64.rpm
ppc64le:
bpftool-debuginfo-3.10.0-1062.30.1.el7.ppc64le.rpm
kernel-debug-debuginfo-3.10.0-1062.30.1.el7.ppc64le.rpm
kernel-debug-devel-3.10.0-1062.30.1.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-1062.30.1.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-1062.30.1.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-1062.30.1.el7.ppc64le.rpm
kernel-tools-libs-devel-3.10.0-1062.30.1.el7.ppc64le.rpm
perf-debuginfo-3.10.0-1062.30.1.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-1062.30.1.el7.ppc64le.rpm
x86_64:
bpftool-debuginfo-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-1062.30.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-1062.30.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-1062.30.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-1062.30.1.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-2019-13648
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 <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2020 Red Hat, Inc.
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