Protect yourself against future threats.
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===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2021.1868
kernel security and bug fix update
2 June 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: kernel
Publisher: Red Hat
Operating System: Red Hat
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Increased Privileges -- Existing Account
Denial of Service -- Existing Account
Reduced Security -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2021-3543 CVE-2021-3501
Original Bulletin:
https://access.redhat.com/errata/RHSA-2021:2165
https://access.redhat.com/errata/RHSA-2021:2168
https://access.redhat.com/errata/RHSA-2021:2169
Comment: This advisory references vulnerabilities in products which run on
platforms other than Red Hat. It is recommended that administrators
running kernel check for an updated version of the software for
their operating system.
This bulletin contains three (3) Red Hat security advisories.
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=====================================================================
Red Hat Security Advisory
Synopsis: Important: kernel-rt security and bug fix update
Advisory ID: RHSA-2021:2169-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:2169
Issue date: 2021-06-01
CVE Names: CVE-2021-3501 CVE-2021-3543
=====================================================================
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: userspace applications can misuse the KVM API to cause a write of
16 bytes at an offset up to 32 GB from vcpu->run (CVE-2021-3501)
* kernel: nitro_enclaves stale file descriptors on failed usercopy
(CVE-2021-3543)
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-8.4.z0 source tree
(BZ#1957489)
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/):
1950136 - CVE-2021-3501 kernel: userspace applications can misuse the KVM API to cause a write of 16 bytes at an offset up to 32 GB from vcpu->run
1953022 - CVE-2021-3543 kernel: nitro_enclaves stale file descriptors on failed usercopy
6. Package List:
Red Hat Enterprise Linux Real Time for NFV (v. 8):
Source:
kernel-rt-4.18.0-305.3.1.rt7.75.el8_4.src.rpm
x86_64:
kernel-rt-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm
kernel-rt-core-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm
kernel-rt-debug-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm
kernel-rt-debug-core-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm
kernel-rt-debug-debuginfo-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm
kernel-rt-debug-devel-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm
kernel-rt-debug-kvm-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm
kernel-rt-debug-modules-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm
kernel-rt-debug-modules-extra-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm
kernel-rt-debuginfo-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm
kernel-rt-devel-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm
kernel-rt-kvm-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm
kernel-rt-modules-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm
kernel-rt-modules-extra-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm
Red Hat Enterprise Linux Real Time (v. 8):
Source:
kernel-rt-4.18.0-305.3.1.rt7.75.el8_4.src.rpm
x86_64:
kernel-rt-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm
kernel-rt-core-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm
kernel-rt-debug-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm
kernel-rt-debug-core-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm
kernel-rt-debug-debuginfo-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm
kernel-rt-debug-devel-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm
kernel-rt-debug-modules-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm
kernel-rt-debug-modules-extra-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm
kernel-rt-debuginfo-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm
kernel-rt-devel-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm
kernel-rt-modules-4.18.0-305.3.1.rt7.75.el8_4.x86_64.rpm
kernel-rt-modules-extra-4.18.0-305.3.1.rt7.75.el8_4.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-2021-3501
https://access.redhat.com/security/cve/CVE-2021-3543
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-2021:2168-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:2168
Issue date: 2021-06-01
CVE Names: CVE-2021-3501 CVE-2021-3543
=====================================================================
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: userspace applications can misuse the KVM API to cause a write of
16 bytes at an offset up to 32 GB from vcpu->run (CVE-2021-3501)
* kernel: nitro_enclaves stale file descriptors on failed usercopy
(CVE-2021-3543)
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):
* OVS mistakenly using local IP as tun_dst for VXLAN packets (?)
(BZ#1944667)
* Selinux: The task calling security_set_bools() deadlocks with itself when
it later calls selinux_audit_rule_match(). (BZ#1945123)
* [mlx5] tc flower mpls match options does not work (BZ#1952061)
* mlx5: missing patches for ct.rel (BZ#1952062)
* CT HWOL: with OVN/OVS, intermittently, load balancer hairpin TCP packets
get dropped for seconds in a row (BZ#1952065)
* [Lenovo 8.3 bug] Blackscreen after clicking on "Settings" icon from
top-right corner. (BZ#1952900)
* RHEL 8.x missing uio upstream fix. (BZ#1952952)
* Turbostat doesn't show any measured data on AMD Milan (BZ#1952987)
* P620 no sound from front headset jack (BZ#1954545)
* RHEL kernel 8.2 and higher are affected by data corruption bug in raid1
arrays using bitmaps. (BZ#1955188)
* [net/sched] connection failed with DNAT + SNAT by tc action ct
(BZ#1956458)
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/):
1950136 - CVE-2021-3501 kernel: userspace applications can misuse the KVM API to cause a write of 16 bytes at an offset up to 32 GB from vcpu->run
1953022 - CVE-2021-3543 kernel: nitro_enclaves stale file descriptors on failed usercopy
6. Package List:
Red Hat Enterprise Linux BaseOS (v. 8):
Source:
kernel-4.18.0-305.3.1.el8_4.src.rpm
aarch64:
bpftool-4.18.0-305.3.1.el8_4.aarch64.rpm
bpftool-debuginfo-4.18.0-305.3.1.el8_4.aarch64.rpm
kernel-4.18.0-305.3.1.el8_4.aarch64.rpm
kernel-core-4.18.0-305.3.1.el8_4.aarch64.rpm
kernel-cross-headers-4.18.0-305.3.1.el8_4.aarch64.rpm
kernel-debug-4.18.0-305.3.1.el8_4.aarch64.rpm
kernel-debug-core-4.18.0-305.3.1.el8_4.aarch64.rpm
kernel-debug-debuginfo-4.18.0-305.3.1.el8_4.aarch64.rpm
kernel-debug-devel-4.18.0-305.3.1.el8_4.aarch64.rpm
kernel-debug-modules-4.18.0-305.3.1.el8_4.aarch64.rpm
kernel-debug-modules-extra-4.18.0-305.3.1.el8_4.aarch64.rpm
kernel-debuginfo-4.18.0-305.3.1.el8_4.aarch64.rpm
kernel-debuginfo-common-aarch64-4.18.0-305.3.1.el8_4.aarch64.rpm
kernel-devel-4.18.0-305.3.1.el8_4.aarch64.rpm
kernel-headers-4.18.0-305.3.1.el8_4.aarch64.rpm
kernel-modules-4.18.0-305.3.1.el8_4.aarch64.rpm
kernel-modules-extra-4.18.0-305.3.1.el8_4.aarch64.rpm
kernel-tools-4.18.0-305.3.1.el8_4.aarch64.rpm
kernel-tools-debuginfo-4.18.0-305.3.1.el8_4.aarch64.rpm
kernel-tools-libs-4.18.0-305.3.1.el8_4.aarch64.rpm
perf-4.18.0-305.3.1.el8_4.aarch64.rpm
perf-debuginfo-4.18.0-305.3.1.el8_4.aarch64.rpm
python3-perf-4.18.0-305.3.1.el8_4.aarch64.rpm
python3-perf-debuginfo-4.18.0-305.3.1.el8_4.aarch64.rpm
noarch:
kernel-abi-stablelists-4.18.0-305.3.1.el8_4.noarch.rpm
kernel-doc-4.18.0-305.3.1.el8_4.noarch.rpm
ppc64le:
bpftool-4.18.0-305.3.1.el8_4.ppc64le.rpm
bpftool-debuginfo-4.18.0-305.3.1.el8_4.ppc64le.rpm
kernel-4.18.0-305.3.1.el8_4.ppc64le.rpm
kernel-core-4.18.0-305.3.1.el8_4.ppc64le.rpm
kernel-cross-headers-4.18.0-305.3.1.el8_4.ppc64le.rpm
kernel-debug-4.18.0-305.3.1.el8_4.ppc64le.rpm
kernel-debug-core-4.18.0-305.3.1.el8_4.ppc64le.rpm
kernel-debug-debuginfo-4.18.0-305.3.1.el8_4.ppc64le.rpm
kernel-debug-devel-4.18.0-305.3.1.el8_4.ppc64le.rpm
kernel-debug-modules-4.18.0-305.3.1.el8_4.ppc64le.rpm
kernel-debug-modules-extra-4.18.0-305.3.1.el8_4.ppc64le.rpm
kernel-debuginfo-4.18.0-305.3.1.el8_4.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.18.0-305.3.1.el8_4.ppc64le.rpm
kernel-devel-4.18.0-305.3.1.el8_4.ppc64le.rpm
kernel-headers-4.18.0-305.3.1.el8_4.ppc64le.rpm
kernel-modules-4.18.0-305.3.1.el8_4.ppc64le.rpm
kernel-modules-extra-4.18.0-305.3.1.el8_4.ppc64le.rpm
kernel-tools-4.18.0-305.3.1.el8_4.ppc64le.rpm
kernel-tools-debuginfo-4.18.0-305.3.1.el8_4.ppc64le.rpm
kernel-tools-libs-4.18.0-305.3.1.el8_4.ppc64le.rpm
perf-4.18.0-305.3.1.el8_4.ppc64le.rpm
perf-debuginfo-4.18.0-305.3.1.el8_4.ppc64le.rpm
python3-perf-4.18.0-305.3.1.el8_4.ppc64le.rpm
python3-perf-debuginfo-4.18.0-305.3.1.el8_4.ppc64le.rpm
s390x:
bpftool-4.18.0-305.3.1.el8_4.s390x.rpm
bpftool-debuginfo-4.18.0-305.3.1.el8_4.s390x.rpm
kernel-4.18.0-305.3.1.el8_4.s390x.rpm
kernel-core-4.18.0-305.3.1.el8_4.s390x.rpm
kernel-cross-headers-4.18.0-305.3.1.el8_4.s390x.rpm
kernel-debug-4.18.0-305.3.1.el8_4.s390x.rpm
kernel-debug-core-4.18.0-305.3.1.el8_4.s390x.rpm
kernel-debug-debuginfo-4.18.0-305.3.1.el8_4.s390x.rpm
kernel-debug-devel-4.18.0-305.3.1.el8_4.s390x.rpm
kernel-debug-modules-4.18.0-305.3.1.el8_4.s390x.rpm
kernel-debug-modules-extra-4.18.0-305.3.1.el8_4.s390x.rpm
kernel-debuginfo-4.18.0-305.3.1.el8_4.s390x.rpm
kernel-debuginfo-common-s390x-4.18.0-305.3.1.el8_4.s390x.rpm
kernel-devel-4.18.0-305.3.1.el8_4.s390x.rpm
kernel-headers-4.18.0-305.3.1.el8_4.s390x.rpm
kernel-modules-4.18.0-305.3.1.el8_4.s390x.rpm
kernel-modules-extra-4.18.0-305.3.1.el8_4.s390x.rpm
kernel-tools-4.18.0-305.3.1.el8_4.s390x.rpm
kernel-tools-debuginfo-4.18.0-305.3.1.el8_4.s390x.rpm
kernel-zfcpdump-4.18.0-305.3.1.el8_4.s390x.rpm
kernel-zfcpdump-core-4.18.0-305.3.1.el8_4.s390x.rpm
kernel-zfcpdump-debuginfo-4.18.0-305.3.1.el8_4.s390x.rpm
kernel-zfcpdump-devel-4.18.0-305.3.1.el8_4.s390x.rpm
kernel-zfcpdump-modules-4.18.0-305.3.1.el8_4.s390x.rpm
kernel-zfcpdump-modules-extra-4.18.0-305.3.1.el8_4.s390x.rpm
perf-4.18.0-305.3.1.el8_4.s390x.rpm
perf-debuginfo-4.18.0-305.3.1.el8_4.s390x.rpm
python3-perf-4.18.0-305.3.1.el8_4.s390x.rpm
python3-perf-debuginfo-4.18.0-305.3.1.el8_4.s390x.rpm
x86_64:
bpftool-4.18.0-305.3.1.el8_4.x86_64.rpm
bpftool-debuginfo-4.18.0-305.3.1.el8_4.x86_64.rpm
kernel-4.18.0-305.3.1.el8_4.x86_64.rpm
kernel-core-4.18.0-305.3.1.el8_4.x86_64.rpm
kernel-cross-headers-4.18.0-305.3.1.el8_4.x86_64.rpm
kernel-debug-4.18.0-305.3.1.el8_4.x86_64.rpm
kernel-debug-core-4.18.0-305.3.1.el8_4.x86_64.rpm
kernel-debug-debuginfo-4.18.0-305.3.1.el8_4.x86_64.rpm
kernel-debug-devel-4.18.0-305.3.1.el8_4.x86_64.rpm
kernel-debug-modules-4.18.0-305.3.1.el8_4.x86_64.rpm
kernel-debug-modules-extra-4.18.0-305.3.1.el8_4.x86_64.rpm
kernel-debuginfo-4.18.0-305.3.1.el8_4.x86_64.rpm
kernel-debuginfo-common-x86_64-4.18.0-305.3.1.el8_4.x86_64.rpm
kernel-devel-4.18.0-305.3.1.el8_4.x86_64.rpm
kernel-headers-4.18.0-305.3.1.el8_4.x86_64.rpm
kernel-modules-4.18.0-305.3.1.el8_4.x86_64.rpm
kernel-modules-extra-4.18.0-305.3.1.el8_4.x86_64.rpm
kernel-tools-4.18.0-305.3.1.el8_4.x86_64.rpm
kernel-tools-debuginfo-4.18.0-305.3.1.el8_4.x86_64.rpm
kernel-tools-libs-4.18.0-305.3.1.el8_4.x86_64.rpm
perf-4.18.0-305.3.1.el8_4.x86_64.rpm
perf-debuginfo-4.18.0-305.3.1.el8_4.x86_64.rpm
python3-perf-4.18.0-305.3.1.el8_4.x86_64.rpm
python3-perf-debuginfo-4.18.0-305.3.1.el8_4.x86_64.rpm
Red Hat CodeReady Linux Builder (v. 8):
aarch64:
bpftool-debuginfo-4.18.0-305.3.1.el8_4.aarch64.rpm
kernel-debug-debuginfo-4.18.0-305.3.1.el8_4.aarch64.rpm
kernel-debuginfo-4.18.0-305.3.1.el8_4.aarch64.rpm
kernel-debuginfo-common-aarch64-4.18.0-305.3.1.el8_4.aarch64.rpm
kernel-tools-debuginfo-4.18.0-305.3.1.el8_4.aarch64.rpm
kernel-tools-libs-devel-4.18.0-305.3.1.el8_4.aarch64.rpm
perf-debuginfo-4.18.0-305.3.1.el8_4.aarch64.rpm
python3-perf-debuginfo-4.18.0-305.3.1.el8_4.aarch64.rpm
ppc64le:
bpftool-debuginfo-4.18.0-305.3.1.el8_4.ppc64le.rpm
kernel-debug-debuginfo-4.18.0-305.3.1.el8_4.ppc64le.rpm
kernel-debuginfo-4.18.0-305.3.1.el8_4.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.18.0-305.3.1.el8_4.ppc64le.rpm
kernel-tools-debuginfo-4.18.0-305.3.1.el8_4.ppc64le.rpm
kernel-tools-libs-devel-4.18.0-305.3.1.el8_4.ppc64le.rpm
perf-debuginfo-4.18.0-305.3.1.el8_4.ppc64le.rpm
python3-perf-debuginfo-4.18.0-305.3.1.el8_4.ppc64le.rpm
x86_64:
bpftool-debuginfo-4.18.0-305.3.1.el8_4.x86_64.rpm
kernel-debug-debuginfo-4.18.0-305.3.1.el8_4.x86_64.rpm
kernel-debuginfo-4.18.0-305.3.1.el8_4.x86_64.rpm
kernel-debuginfo-common-x86_64-4.18.0-305.3.1.el8_4.x86_64.rpm
kernel-tools-debuginfo-4.18.0-305.3.1.el8_4.x86_64.rpm
kernel-tools-libs-devel-4.18.0-305.3.1.el8_4.x86_64.rpm
perf-debuginfo-4.18.0-305.3.1.el8_4.x86_64.rpm
python3-perf-debuginfo-4.18.0-305.3.1.el8_4.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-2021-3501
https://access.redhat.com/security/cve/CVE-2021-3543
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: kpatch-patch security update
Advisory ID: RHSA-2021:2165-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:2165
Issue date: 2021-06-01
CVE Names: CVE-2021-3501
=====================================================================
1. Summary:
An update 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 BaseOS (v. 8) - x86_64
3. Description:
This is a kernel live patch module which is automatically loaded by the RPM
post-install script to modify the code of a running kernel.
Security Fix(es):
* kernel: userspace applications can misuse the KVM API to cause a write of
16 bytes at an offset up to 32 GB from vcpu->run (CVE-2021-3501)
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
5. Bugs fixed (https://bugzilla.redhat.com/):
1950136 - CVE-2021-3501 kernel: userspace applications can misuse the KVM API to cause a write of 16 bytes at an offset up to 32 GB from vcpu->run
6. Package List:
Red Hat Enterprise Linux BaseOS (v. 8):
Source:
kpatch-patch-4_18_0-305-1-1.el8.src.rpm
x86_64:
kpatch-patch-4_18_0-305-1-1.el8.x86_64.rpm
kpatch-patch-4_18_0-305-debuginfo-1-1.el8.x86_64.rpm
kpatch-patch-4_18_0-305-debugsource-1-1.el8.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-2021-3501
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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