RedHat: RHSA-2021-0184:01 Important: kernel security and bug fix update

An update for kernel is now available for Red Hat Enterprise Linux 8.1 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,

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

Synopsis:          Important: kernel security and bug fix update
Advisory ID:       RHSA-2021:0184-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2021:0184
Issue date:        2021-01-19
CVE Names:         CVE-2020-16166 CVE-2020-25211 
=====================================================================

1. Summary:

An update for kernel is now available for Red Hat Enterprise Linux 8.1
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 CodeReady Linux Builder EUS (v. 8.1) - aarch64, ppc64le, x86_64
Red Hat Enterprise Linux BaseOS EUS (v. 8.1) - aarch64, noarch, ppc64le, s390x, x86_64

3. Description:

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

Security Fix(es):

* kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in
net/netfilter/nf_conntrack_netlink.c (CVE-2020-25211)

* kernel: information exposure in drivers/char/random.c and
kernel/time/timer.c (CVE-2020-16166)

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):

* RHEL8.1 - net/smc: fix silent data corruption in SMC (BZ#1882242)

* RHEL8.1 - Random memory corruption may occur due to incorrect tlbflush
(BZ#1899210)

* RHEL8.3 Beta - RHEL8.3 hangs on dbginfo.sh execution, crash dump
generated (mm-) (BZ#1903021)

* [Azure][RHEL8] IP forwarding issue in netvsc (BZ#1904327)

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/):

1865751 - CVE-2020-16166 kernel: information exposure in drivers/char/random.c and kernel/time/timer.c
1877571 - CVE-2020-25211 kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c

6. Package List:

Red Hat Enterprise Linux BaseOS EUS (v. 8.1):

Source:
kernel-4.18.0-147.38.1.el8_1.src.rpm

aarch64:
bpftool-4.18.0-147.38.1.el8_1.aarch64.rpm
bpftool-debuginfo-4.18.0-147.38.1.el8_1.aarch64.rpm
kernel-4.18.0-147.38.1.el8_1.aarch64.rpm
kernel-core-4.18.0-147.38.1.el8_1.aarch64.rpm
kernel-cross-headers-4.18.0-147.38.1.el8_1.aarch64.rpm
kernel-debug-4.18.0-147.38.1.el8_1.aarch64.rpm
kernel-debug-core-4.18.0-147.38.1.el8_1.aarch64.rpm
kernel-debug-debuginfo-4.18.0-147.38.1.el8_1.aarch64.rpm
kernel-debug-devel-4.18.0-147.38.1.el8_1.aarch64.rpm
kernel-debug-modules-4.18.0-147.38.1.el8_1.aarch64.rpm
kernel-debug-modules-extra-4.18.0-147.38.1.el8_1.aarch64.rpm
kernel-debuginfo-4.18.0-147.38.1.el8_1.aarch64.rpm
kernel-debuginfo-common-aarch64-4.18.0-147.38.1.el8_1.aarch64.rpm
kernel-devel-4.18.0-147.38.1.el8_1.aarch64.rpm
kernel-headers-4.18.0-147.38.1.el8_1.aarch64.rpm
kernel-modules-4.18.0-147.38.1.el8_1.aarch64.rpm
kernel-modules-extra-4.18.0-147.38.1.el8_1.aarch64.rpm
kernel-tools-4.18.0-147.38.1.el8_1.aarch64.rpm
kernel-tools-debuginfo-4.18.0-147.38.1.el8_1.aarch64.rpm
kernel-tools-libs-4.18.0-147.38.1.el8_1.aarch64.rpm
perf-4.18.0-147.38.1.el8_1.aarch64.rpm
perf-debuginfo-4.18.0-147.38.1.el8_1.aarch64.rpm
python3-perf-4.18.0-147.38.1.el8_1.aarch64.rpm
python3-perf-debuginfo-4.18.0-147.38.1.el8_1.aarch64.rpm

noarch:
kernel-abi-whitelists-4.18.0-147.38.1.el8_1.noarch.rpm
kernel-doc-4.18.0-147.38.1.el8_1.noarch.rpm

ppc64le:
bpftool-4.18.0-147.38.1.el8_1.ppc64le.rpm
bpftool-debuginfo-4.18.0-147.38.1.el8_1.ppc64le.rpm
kernel-4.18.0-147.38.1.el8_1.ppc64le.rpm
kernel-core-4.18.0-147.38.1.el8_1.ppc64le.rpm
kernel-cross-headers-4.18.0-147.38.1.el8_1.ppc64le.rpm
kernel-debug-4.18.0-147.38.1.el8_1.ppc64le.rpm
kernel-debug-core-4.18.0-147.38.1.el8_1.ppc64le.rpm
kernel-debug-debuginfo-4.18.0-147.38.1.el8_1.ppc64le.rpm
kernel-debug-devel-4.18.0-147.38.1.el8_1.ppc64le.rpm
kernel-debug-modules-4.18.0-147.38.1.el8_1.ppc64le.rpm
kernel-debug-modules-extra-4.18.0-147.38.1.el8_1.ppc64le.rpm
kernel-debuginfo-4.18.0-147.38.1.el8_1.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.18.0-147.38.1.el8_1.ppc64le.rpm
kernel-devel-4.18.0-147.38.1.el8_1.ppc64le.rpm
kernel-headers-4.18.0-147.38.1.el8_1.ppc64le.rpm
kernel-modules-4.18.0-147.38.1.el8_1.ppc64le.rpm
kernel-modules-extra-4.18.0-147.38.1.el8_1.ppc64le.rpm
kernel-tools-4.18.0-147.38.1.el8_1.ppc64le.rpm
kernel-tools-debuginfo-4.18.0-147.38.1.el8_1.ppc64le.rpm
kernel-tools-libs-4.18.0-147.38.1.el8_1.ppc64le.rpm
perf-4.18.0-147.38.1.el8_1.ppc64le.rpm
perf-debuginfo-4.18.0-147.38.1.el8_1.ppc64le.rpm
python3-perf-4.18.0-147.38.1.el8_1.ppc64le.rpm
python3-perf-debuginfo-4.18.0-147.38.1.el8_1.ppc64le.rpm

s390x:
bpftool-4.18.0-147.38.1.el8_1.s390x.rpm
bpftool-debuginfo-4.18.0-147.38.1.el8_1.s390x.rpm
kernel-4.18.0-147.38.1.el8_1.s390x.rpm
kernel-core-4.18.0-147.38.1.el8_1.s390x.rpm
kernel-cross-headers-4.18.0-147.38.1.el8_1.s390x.rpm
kernel-debug-4.18.0-147.38.1.el8_1.s390x.rpm
kernel-debug-core-4.18.0-147.38.1.el8_1.s390x.rpm
kernel-debug-debuginfo-4.18.0-147.38.1.el8_1.s390x.rpm
kernel-debug-devel-4.18.0-147.38.1.el8_1.s390x.rpm
kernel-debug-modules-4.18.0-147.38.1.el8_1.s390x.rpm
kernel-debug-modules-extra-4.18.0-147.38.1.el8_1.s390x.rpm
kernel-debuginfo-4.18.0-147.38.1.el8_1.s390x.rpm
kernel-debuginfo-common-s390x-4.18.0-147.38.1.el8_1.s390x.rpm
kernel-devel-4.18.0-147.38.1.el8_1.s390x.rpm
kernel-headers-4.18.0-147.38.1.el8_1.s390x.rpm
kernel-modules-4.18.0-147.38.1.el8_1.s390x.rpm
kernel-modules-extra-4.18.0-147.38.1.el8_1.s390x.rpm
kernel-tools-4.18.0-147.38.1.el8_1.s390x.rpm
kernel-tools-debuginfo-4.18.0-147.38.1.el8_1.s390x.rpm
kernel-zfcpdump-4.18.0-147.38.1.el8_1.s390x.rpm
kernel-zfcpdump-core-4.18.0-147.38.1.el8_1.s390x.rpm
kernel-zfcpdump-debuginfo-4.18.0-147.38.1.el8_1.s390x.rpm
kernel-zfcpdump-devel-4.18.0-147.38.1.el8_1.s390x.rpm
kernel-zfcpdump-modules-4.18.0-147.38.1.el8_1.s390x.rpm
kernel-zfcpdump-modules-extra-4.18.0-147.38.1.el8_1.s390x.rpm
perf-4.18.0-147.38.1.el8_1.s390x.rpm
perf-debuginfo-4.18.0-147.38.1.el8_1.s390x.rpm
python3-perf-4.18.0-147.38.1.el8_1.s390x.rpm
python3-perf-debuginfo-4.18.0-147.38.1.el8_1.s390x.rpm

x86_64:
bpftool-4.18.0-147.38.1.el8_1.x86_64.rpm
bpftool-debuginfo-4.18.0-147.38.1.el8_1.x86_64.rpm
kernel-4.18.0-147.38.1.el8_1.x86_64.rpm
kernel-core-4.18.0-147.38.1.el8_1.x86_64.rpm
kernel-cross-headers-4.18.0-147.38.1.el8_1.x86_64.rpm
kernel-debug-4.18.0-147.38.1.el8_1.x86_64.rpm
kernel-debug-core-4.18.0-147.38.1.el8_1.x86_64.rpm
kernel-debug-debuginfo-4.18.0-147.38.1.el8_1.x86_64.rpm
kernel-debug-devel-4.18.0-147.38.1.el8_1.x86_64.rpm
kernel-debug-modules-4.18.0-147.38.1.el8_1.x86_64.rpm
kernel-debug-modules-extra-4.18.0-147.38.1.el8_1.x86_64.rpm
kernel-debuginfo-4.18.0-147.38.1.el8_1.x86_64.rpm
kernel-debuginfo-common-x86_64-4.18.0-147.38.1.el8_1.x86_64.rpm
kernel-devel-4.18.0-147.38.1.el8_1.x86_64.rpm
kernel-headers-4.18.0-147.38.1.el8_1.x86_64.rpm
kernel-modules-4.18.0-147.38.1.el8_1.x86_64.rpm
kernel-modules-extra-4.18.0-147.38.1.el8_1.x86_64.rpm
kernel-tools-4.18.0-147.38.1.el8_1.x86_64.rpm
kernel-tools-debuginfo-4.18.0-147.38.1.el8_1.x86_64.rpm
kernel-tools-libs-4.18.0-147.38.1.el8_1.x86_64.rpm
perf-4.18.0-147.38.1.el8_1.x86_64.rpm
perf-debuginfo-4.18.0-147.38.1.el8_1.x86_64.rpm
python3-perf-4.18.0-147.38.1.el8_1.x86_64.rpm
python3-perf-debuginfo-4.18.0-147.38.1.el8_1.x86_64.rpm

Red Hat CodeReady Linux Builder EUS (v. 8.1):

aarch64:
bpftool-debuginfo-4.18.0-147.38.1.el8_1.aarch64.rpm
kernel-debug-debuginfo-4.18.0-147.38.1.el8_1.aarch64.rpm
kernel-debuginfo-4.18.0-147.38.1.el8_1.aarch64.rpm
kernel-debuginfo-common-aarch64-4.18.0-147.38.1.el8_1.aarch64.rpm
kernel-tools-debuginfo-4.18.0-147.38.1.el8_1.aarch64.rpm
kernel-tools-libs-devel-4.18.0-147.38.1.el8_1.aarch64.rpm
perf-debuginfo-4.18.0-147.38.1.el8_1.aarch64.rpm
python3-perf-debuginfo-4.18.0-147.38.1.el8_1.aarch64.rpm

ppc64le:
bpftool-debuginfo-4.18.0-147.38.1.el8_1.ppc64le.rpm
kernel-debug-debuginfo-4.18.0-147.38.1.el8_1.ppc64le.rpm
kernel-debuginfo-4.18.0-147.38.1.el8_1.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.18.0-147.38.1.el8_1.ppc64le.rpm
kernel-tools-debuginfo-4.18.0-147.38.1.el8_1.ppc64le.rpm
kernel-tools-libs-devel-4.18.0-147.38.1.el8_1.ppc64le.rpm
perf-debuginfo-4.18.0-147.38.1.el8_1.ppc64le.rpm
python3-perf-debuginfo-4.18.0-147.38.1.el8_1.ppc64le.rpm

x86_64:
bpftool-debuginfo-4.18.0-147.38.1.el8_1.x86_64.rpm
kernel-debug-debuginfo-4.18.0-147.38.1.el8_1.x86_64.rpm
kernel-debuginfo-4.18.0-147.38.1.el8_1.x86_64.rpm
kernel-debuginfo-common-x86_64-4.18.0-147.38.1.el8_1.x86_64.rpm
kernel-tools-debuginfo-4.18.0-147.38.1.el8_1.x86_64.rpm
kernel-tools-libs-devel-4.18.0-147.38.1.el8_1.x86_64.rpm
perf-debuginfo-4.18.0-147.38.1.el8_1.x86_64.rpm
python3-perf-debuginfo-4.18.0-147.38.1.el8_1.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-2020-16166
https://access.redhat.com/security/cve/CVE-2020-25211
https://access.redhat.com/security/updates/classification/#important

8. Contact:

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

Copyright 2021 Red Hat, Inc.
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