Protect yourself against future threats.
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Hash: SHA256
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2021.0034
kernel-rt security and bug fix update
5 January 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: kernel-rt
kernel
Publisher: Red Hat
Operating System: Red Hat
Impact/Access: Denial of Service -- Existing Account
Reduced Security -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-25211
Reference: ESB-2020.3775
ESB-2020.3710
ESB-2020.3592
Original Bulletin:
https://access.redhat.com/errata/RHSA-2021:0003
https://access.redhat.com/errata/RHSA-2021:0004
Comment: This bulletin contains two (2) Red Hat security advisories.
- --------------------------BEGIN INCLUDED TEXT--------------------
=====================================================================
Red Hat Security Advisory
Synopsis: Important: kernel-rt security and bug fix update
Advisory ID: RHSA-2021:0004-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:0004
Issue date: 2021-01-04
CVE Names: CVE-2020-25211
=====================================================================
1. Summary:
An update for kernel-rt is now available for Red Hat Enterprise Linux 8.
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 Real Time (v. 8) - x86_64
Red Hat Enterprise Linux Real Time for NFV (v. 8) - x86_64
3. Description:
The kernel-rt packages provide the Real Time Linux Kernel, which enables
fine-tuning for systems with extremely high determinism requirements.
Security Fix(es):
* kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in
net/netfilter/nf_conntrack_netlink.c (CVE-2020-25211)
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-rt: update RT source tree to the RHEL-8.3.z source tree
(BZ#1906140)
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/):
1877571 - CVE-2020-25211 kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c
1906140 - kernel-rt: update RT source tree to the RHEL-8.3.z source tree
6. Package List:
Red Hat Enterprise Linux Real Time for NFV (v. 8):
Source:
kernel-rt-4.18.0-240.10.1.rt7.64.el8_3.src.rpm
x86_64:
kernel-rt-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
kernel-rt-core-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
kernel-rt-debug-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
kernel-rt-debug-core-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
kernel-rt-debug-debuginfo-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
kernel-rt-debug-devel-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
kernel-rt-debug-kvm-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
kernel-rt-debug-modules-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
kernel-rt-debug-modules-extra-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
kernel-rt-debuginfo-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
kernel-rt-devel-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
kernel-rt-kvm-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
kernel-rt-modules-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
kernel-rt-modules-extra-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
Red Hat Enterprise Linux Real Time (v. 8):
Source:
kernel-rt-4.18.0-240.10.1.rt7.64.el8_3.src.rpm
x86_64:
kernel-rt-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
kernel-rt-core-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
kernel-rt-debug-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
kernel-rt-debug-core-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
kernel-rt-debug-debuginfo-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
kernel-rt-debug-devel-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
kernel-rt-debug-modules-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
kernel-rt-debug-modules-extra-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
kernel-rt-debuginfo-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
kernel-rt-devel-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
kernel-rt-modules-4.18.0-240.10.1.rt7.64.el8_3.x86_64.rpm
kernel-rt-modules-extra-4.18.0-240.10.1.rt7.64.el8_3.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-2020-25211
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 2021 Red Hat, Inc.
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- ------------------------------------------------------------------------------------------------------------
=====================================================================
Red Hat Security Advisory
Synopsis: Important: kernel security and bug fix update
Advisory ID: RHSA-2021:0003-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:0003
Issue date: 2021-01-04
CVE Names: CVE-2020-25211
=====================================================================
1. Summary:
An update for kernel is now available for Red Hat Enterprise Linux 8.
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 (v. 8) - aarch64, ppc64le, x86_64
Red Hat Enterprise Linux BaseOS (v. 8) - 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)
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):
* avoid flush_backlog IPI for isolated CPUs by configuring RPS cpumask
(BZ#1883314)
* rngd consumes 100% cpu on rhel-8.3 system in fips mode (BZ#1886192)
* RHEL8.1 - Random memory corruption may occur due to incorrect tlbflush
(BZ#1899208)
* fips mode boot is broken after adding extrng (BZ#1899584)
* pmtu of 1280 for vxlan as bridge port won't work (BZ#1902082)
* rpc task loop with kworker spinning at 100% CPU for 10 minutes when
umount an NFS 4.x share with sec=krb5 triggered by unmount of the NFS share
(BZ#1907667)
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/):
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 (v. 8):
Source:
kernel-4.18.0-240.10.1.el8_3.src.rpm
aarch64:
bpftool-4.18.0-240.10.1.el8_3.aarch64.rpm
bpftool-debuginfo-4.18.0-240.10.1.el8_3.aarch64.rpm
kernel-4.18.0-240.10.1.el8_3.aarch64.rpm
kernel-core-4.18.0-240.10.1.el8_3.aarch64.rpm
kernel-cross-headers-4.18.0-240.10.1.el8_3.aarch64.rpm
kernel-debug-4.18.0-240.10.1.el8_3.aarch64.rpm
kernel-debug-core-4.18.0-240.10.1.el8_3.aarch64.rpm
kernel-debug-debuginfo-4.18.0-240.10.1.el8_3.aarch64.rpm
kernel-debug-devel-4.18.0-240.10.1.el8_3.aarch64.rpm
kernel-debug-modules-4.18.0-240.10.1.el8_3.aarch64.rpm
kernel-debug-modules-extra-4.18.0-240.10.1.el8_3.aarch64.rpm
kernel-debuginfo-4.18.0-240.10.1.el8_3.aarch64.rpm
kernel-debuginfo-common-aarch64-4.18.0-240.10.1.el8_3.aarch64.rpm
kernel-devel-4.18.0-240.10.1.el8_3.aarch64.rpm
kernel-headers-4.18.0-240.10.1.el8_3.aarch64.rpm
kernel-modules-4.18.0-240.10.1.el8_3.aarch64.rpm
kernel-modules-extra-4.18.0-240.10.1.el8_3.aarch64.rpm
kernel-tools-4.18.0-240.10.1.el8_3.aarch64.rpm
kernel-tools-debuginfo-4.18.0-240.10.1.el8_3.aarch64.rpm
kernel-tools-libs-4.18.0-240.10.1.el8_3.aarch64.rpm
perf-4.18.0-240.10.1.el8_3.aarch64.rpm
perf-debuginfo-4.18.0-240.10.1.el8_3.aarch64.rpm
python3-perf-4.18.0-240.10.1.el8_3.aarch64.rpm
python3-perf-debuginfo-4.18.0-240.10.1.el8_3.aarch64.rpm
noarch:
kernel-abi-whitelists-4.18.0-240.10.1.el8_3.noarch.rpm
kernel-doc-4.18.0-240.10.1.el8_3.noarch.rpm
ppc64le:
bpftool-4.18.0-240.10.1.el8_3.ppc64le.rpm
bpftool-debuginfo-4.18.0-240.10.1.el8_3.ppc64le.rpm
kernel-4.18.0-240.10.1.el8_3.ppc64le.rpm
kernel-core-4.18.0-240.10.1.el8_3.ppc64le.rpm
kernel-cross-headers-4.18.0-240.10.1.el8_3.ppc64le.rpm
kernel-debug-4.18.0-240.10.1.el8_3.ppc64le.rpm
kernel-debug-core-4.18.0-240.10.1.el8_3.ppc64le.rpm
kernel-debug-debuginfo-4.18.0-240.10.1.el8_3.ppc64le.rpm
kernel-debug-devel-4.18.0-240.10.1.el8_3.ppc64le.rpm
kernel-debug-modules-4.18.0-240.10.1.el8_3.ppc64le.rpm
kernel-debug-modules-extra-4.18.0-240.10.1.el8_3.ppc64le.rpm
kernel-debuginfo-4.18.0-240.10.1.el8_3.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.18.0-240.10.1.el8_3.ppc64le.rpm
kernel-devel-4.18.0-240.10.1.el8_3.ppc64le.rpm
kernel-headers-4.18.0-240.10.1.el8_3.ppc64le.rpm
kernel-modules-4.18.0-240.10.1.el8_3.ppc64le.rpm
kernel-modules-extra-4.18.0-240.10.1.el8_3.ppc64le.rpm
kernel-tools-4.18.0-240.10.1.el8_3.ppc64le.rpm
kernel-tools-debuginfo-4.18.0-240.10.1.el8_3.ppc64le.rpm
kernel-tools-libs-4.18.0-240.10.1.el8_3.ppc64le.rpm
perf-4.18.0-240.10.1.el8_3.ppc64le.rpm
perf-debuginfo-4.18.0-240.10.1.el8_3.ppc64le.rpm
python3-perf-4.18.0-240.10.1.el8_3.ppc64le.rpm
python3-perf-debuginfo-4.18.0-240.10.1.el8_3.ppc64le.rpm
s390x:
bpftool-4.18.0-240.10.1.el8_3.s390x.rpm
bpftool-debuginfo-4.18.0-240.10.1.el8_3.s390x.rpm
kernel-4.18.0-240.10.1.el8_3.s390x.rpm
kernel-core-4.18.0-240.10.1.el8_3.s390x.rpm
kernel-cross-headers-4.18.0-240.10.1.el8_3.s390x.rpm
kernel-debug-4.18.0-240.10.1.el8_3.s390x.rpm
kernel-debug-core-4.18.0-240.10.1.el8_3.s390x.rpm
kernel-debug-debuginfo-4.18.0-240.10.1.el8_3.s390x.rpm
kernel-debug-devel-4.18.0-240.10.1.el8_3.s390x.rpm
kernel-debug-modules-4.18.0-240.10.1.el8_3.s390x.rpm
kernel-debug-modules-extra-4.18.0-240.10.1.el8_3.s390x.rpm
kernel-debuginfo-4.18.0-240.10.1.el8_3.s390x.rpm
kernel-debuginfo-common-s390x-4.18.0-240.10.1.el8_3.s390x.rpm
kernel-devel-4.18.0-240.10.1.el8_3.s390x.rpm
kernel-headers-4.18.0-240.10.1.el8_3.s390x.rpm
kernel-modules-4.18.0-240.10.1.el8_3.s390x.rpm
kernel-modules-extra-4.18.0-240.10.1.el8_3.s390x.rpm
kernel-tools-4.18.0-240.10.1.el8_3.s390x.rpm
kernel-tools-debuginfo-4.18.0-240.10.1.el8_3.s390x.rpm
kernel-zfcpdump-4.18.0-240.10.1.el8_3.s390x.rpm
kernel-zfcpdump-core-4.18.0-240.10.1.el8_3.s390x.rpm
kernel-zfcpdump-debuginfo-4.18.0-240.10.1.el8_3.s390x.rpm
kernel-zfcpdump-devel-4.18.0-240.10.1.el8_3.s390x.rpm
kernel-zfcpdump-modules-4.18.0-240.10.1.el8_3.s390x.rpm
kernel-zfcpdump-modules-extra-4.18.0-240.10.1.el8_3.s390x.rpm
perf-4.18.0-240.10.1.el8_3.s390x.rpm
perf-debuginfo-4.18.0-240.10.1.el8_3.s390x.rpm
python3-perf-4.18.0-240.10.1.el8_3.s390x.rpm
python3-perf-debuginfo-4.18.0-240.10.1.el8_3.s390x.rpm
x86_64:
bpftool-4.18.0-240.10.1.el8_3.x86_64.rpm
bpftool-debuginfo-4.18.0-240.10.1.el8_3.x86_64.rpm
kernel-4.18.0-240.10.1.el8_3.x86_64.rpm
kernel-core-4.18.0-240.10.1.el8_3.x86_64.rpm
kernel-cross-headers-4.18.0-240.10.1.el8_3.x86_64.rpm
kernel-debug-4.18.0-240.10.1.el8_3.x86_64.rpm
kernel-debug-core-4.18.0-240.10.1.el8_3.x86_64.rpm
kernel-debug-debuginfo-4.18.0-240.10.1.el8_3.x86_64.rpm
kernel-debug-devel-4.18.0-240.10.1.el8_3.x86_64.rpm
kernel-debug-modules-4.18.0-240.10.1.el8_3.x86_64.rpm
kernel-debug-modules-extra-4.18.0-240.10.1.el8_3.x86_64.rpm
kernel-debuginfo-4.18.0-240.10.1.el8_3.x86_64.rpm
kernel-debuginfo-common-x86_64-4.18.0-240.10.1.el8_3.x86_64.rpm
kernel-devel-4.18.0-240.10.1.el8_3.x86_64.rpm
kernel-headers-4.18.0-240.10.1.el8_3.x86_64.rpm
kernel-modules-4.18.0-240.10.1.el8_3.x86_64.rpm
kernel-modules-extra-4.18.0-240.10.1.el8_3.x86_64.rpm
kernel-tools-4.18.0-240.10.1.el8_3.x86_64.rpm
kernel-tools-debuginfo-4.18.0-240.10.1.el8_3.x86_64.rpm
kernel-tools-libs-4.18.0-240.10.1.el8_3.x86_64.rpm
perf-4.18.0-240.10.1.el8_3.x86_64.rpm
perf-debuginfo-4.18.0-240.10.1.el8_3.x86_64.rpm
python3-perf-4.18.0-240.10.1.el8_3.x86_64.rpm
python3-perf-debuginfo-4.18.0-240.10.1.el8_3.x86_64.rpm
Red Hat CodeReady Linux Builder (v. 8):
aarch64:
bpftool-debuginfo-4.18.0-240.10.1.el8_3.aarch64.rpm
kernel-debug-debuginfo-4.18.0-240.10.1.el8_3.aarch64.rpm
kernel-debuginfo-4.18.0-240.10.1.el8_3.aarch64.rpm
kernel-debuginfo-common-aarch64-4.18.0-240.10.1.el8_3.aarch64.rpm
kernel-tools-debuginfo-4.18.0-240.10.1.el8_3.aarch64.rpm
kernel-tools-libs-devel-4.18.0-240.10.1.el8_3.aarch64.rpm
perf-debuginfo-4.18.0-240.10.1.el8_3.aarch64.rpm
python3-perf-debuginfo-4.18.0-240.10.1.el8_3.aarch64.rpm
ppc64le:
bpftool-debuginfo-4.18.0-240.10.1.el8_3.ppc64le.rpm
kernel-debug-debuginfo-4.18.0-240.10.1.el8_3.ppc64le.rpm
kernel-debuginfo-4.18.0-240.10.1.el8_3.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.18.0-240.10.1.el8_3.ppc64le.rpm
kernel-tools-debuginfo-4.18.0-240.10.1.el8_3.ppc64le.rpm
kernel-tools-libs-devel-4.18.0-240.10.1.el8_3.ppc64le.rpm
perf-debuginfo-4.18.0-240.10.1.el8_3.ppc64le.rpm
python3-perf-debuginfo-4.18.0-240.10.1.el8_3.ppc64le.rpm
x86_64:
bpftool-debuginfo-4.18.0-240.10.1.el8_3.x86_64.rpm
kernel-debug-debuginfo-4.18.0-240.10.1.el8_3.x86_64.rpm
kernel-debuginfo-4.18.0-240.10.1.el8_3.x86_64.rpm
kernel-debuginfo-common-x86_64-4.18.0-240.10.1.el8_3.x86_64.rpm
kernel-tools-debuginfo-4.18.0-240.10.1.el8_3.x86_64.rpm
kernel-tools-libs-devel-4.18.0-240.10.1.el8_3.x86_64.rpm
perf-debuginfo-4.18.0-240.10.1.el8_3.x86_64.rpm
python3-perf-debuginfo-4.18.0-240.10.1.el8_3.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-2020-25211
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 2021 Red Hat, Inc.
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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
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Qld 4072
Internet Email: auscert@auscert.org.au
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===========================================================================
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