VAR-202105-1451
Vulnerability from variot - Updated: 2025-12-22 20:10An issue was discovered in Linux: KVM through Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks and can lead to pages being freed while still accessible by the VMM and guest. This allows users with the ability to start and control a VM to read/write random pages of memory and can result in local privilege escalation. Arch Linux is an application system of Arch open source. A lightweight and flexible Linux® distribution that tries to keep it simple. Description:
Red Hat Advanced Cluster Management for Kubernetes 2.3.3 images
Red Hat Advanced Cluster Management for Kubernetes provides the capabilities to address common challenges that administrators and site reliability engineers face as they work across a range of public and private cloud environments. Clusters and applications are all visible and managed from a single console—with security policy built in. See the following Release Notes documentation, which will be updated shortly for this release, for additional details about this release:
https://access.redhat.com/documentation/en-us/red_hat_advanced_cluster_mana gement_for_kubernetes/2.3/html/release_notes/
Note: Because Red Hat OpenShift Container Platform version 4.9 was just released, the functional testing of the compatibility between Red Hat Advanced Cluster Management 2.3.3 and Red Hat OpenShift Container Platform version 4.9 is still in progress.
Security fixes:
-
nginx: Off-by-one in ngx_resolver_copy() when labels are followed by a pointer to a root domain name (CVE-2021-23017)
-
redis: Lua scripts can overflow the heap-based Lua stack (CVE-2021-32626)
-
redis: Integer overflow issue with Streams (CVE-2021-32627)
-
redis: Integer overflow bug in the ziplist data structure (CVE-2021-32628)
-
redis: Integer overflow issue with intsets (CVE-2021-32687)
-
redis: Integer overflow issue with strings (CVE-2021-41099)
-
redis: Out of bounds read in lua debugger protocol parser (CVE-2021-32672)
-
redis: Denial of service via Redis Standard Protocol (RESP) request (CVE-2021-32675)
-
helm: information disclosure vulnerability (CVE-2021-32690)
Bug fixes:
-
KUBE-API: Support move agent to different cluster in the same namespace (BZ# 1977358)
-
Add columns to the Agent CRD list (BZ# 1977398)
-
ClusterDeployment controller watches all Secrets from all namespaces (BZ# 1986081)
-
RHACM 2.3.3 images (BZ# 1999365)
-
Workaround for Network Manager not supporting nmconnections priority (BZ# 2001294)
-
create cluster page empty in Safary Browser (BZ# 2002280)
-
Compliance state doesn't get updated after fixing the issue causing initially the policy not being able to update the managed object (BZ# 2002667)
-
Overview page displays VMware based managed cluster as other (BZ# 2004188)
-
Solution:
Before applying this update, make sure all previously released errata relevant to your system have been applied. Bugs fixed (https://bugzilla.redhat.com/):
1963121 - CVE-2021-23017 nginx: Off-by-one in ngx_resolver_copy() when labels are followed by a pointer to a root domain name 1977358 - [4.8.0] KUBE-API: Support move agent to different cluster in the same namespace 1977398 - [4.8.0] [master] Add columns to the Agent CRD list 1978144 - CVE-2021-32690 helm: information disclosure vulnerability 1986081 - [4.8.0] ClusterDeployment controller watches all Secrets from all namespaces 1999365 - RHACM 2.3.3 images 2001294 - [4.8.0] Workaround for Network Manager not supporting nmconnections priority 2002280 - create cluster page empty in Safary Browser 2002667 - Compliance state doesn't get updated after fixing the issue causing initially the policy not being able to update the managed object 2004188 - Overview page displays VMware based managed cluster as other 2010991 - CVE-2021-32687 redis: Integer overflow issue with intsets 2011000 - CVE-2021-32675 redis: Denial of service via Redis Standard Protocol (RESP) request 2011001 - CVE-2021-32672 redis: Out of bounds read in lua debugger protocol parser 2011004 - CVE-2021-32628 redis: Integer overflow bug in the ziplist data structure 2011010 - CVE-2021-32627 redis: Integer overflow issue with Streams 2011017 - CVE-2021-32626 redis: Lua scripts can overflow the heap-based Lua stack 2011020 - CVE-2021-41099 redis: Integer overflow issue with strings
- Description:
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
Bug Fix(es):
-
Indefinite waiting for RCU callback while removing cgroup (BZ#1967844)
-
kernel-rt: update to the latest RHEL7.9.z9 source tree (BZ#2002994)
-
7.3) - x86_64
-
========================================================================== Ubuntu Security Notice USN-5071-1 September 08, 2021
linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-gke, linux-gke-5.4, linux-gkeop, linux-gkeop-5.4, linux-kvm, linux-oracle, linux-oracle-5.4 vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
Summary:
Several security issues were fixed in the Linux kernel. An attacker in a guest VM could use this to read or write portions of the host's physical memory. (CVE-2021-3656)
Maxim Levitsky discovered that the KVM hypervisor implementation for AMD processors in the Linux kernel did not properly prevent a guest VM from enabling AVIC in nested guest VMs. An attacker in a guest VM could use this to write to portions of the host's physical memory. (CVE-2021-3653)
It was discovered that the KVM hypervisor implementation for AMD processors in the Linux kernel did not ensure enough processing time was given to perform cleanups of large SEV VMs. A local attacker could use this to cause a denial of service (soft lockup). (CVE-2020-36311)
It was discovered that the KVM hypervisor implementation in the Linux kernel did not properly perform reference counting in some situations, leading to a use-after-free vulnerability. An attacker who could start and control a VM could possibly use this to expose sensitive information or execute arbitrary code. (CVE-2021-22543)
Murray McAllister discovered that the joystick device interface in the Linux kernel did not properly validate data passed via an ioctl(). A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code on systems with a joystick device registered. (CVE-2021-3612)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 20.04 LTS: linux-image-5.4.0-1023-gkeop 5.4.0-1023.24 linux-image-5.4.0-1046-kvm 5.4.0-1046.48 linux-image-5.4.0-1052-gcp 5.4.0-1052.56 linux-image-5.4.0-1052-gke 5.4.0-1052.55 linux-image-5.4.0-1054-oracle 5.4.0-1054.58 linux-image-5.4.0-1056-aws 5.4.0-1056.59 linux-image-5.4.0-1058-azure 5.4.0-1058.60 linux-image-5.4.0-84-generic 5.4.0-84.94 linux-image-5.4.0-84-generic-lpae 5.4.0-84.94 linux-image-5.4.0-84-lowlatency 5.4.0-84.94 linux-image-aws-lts-20.04 5.4.0.1056.59 linux-image-azure-lts-20.04 5.4.0.1058.56 linux-image-gcp-lts-20.04 5.4.0.1052.62 linux-image-generic 5.4.0.84.88 linux-image-generic-lpae 5.4.0.84.88 linux-image-gke 5.4.0.1052.62 linux-image-gke-5.4 5.4.0.1052.62 linux-image-gkeop 5.4.0.1023.26 linux-image-gkeop-5.4 5.4.0.1023.26 linux-image-kvm 5.4.0.1046.45 linux-image-lowlatency 5.4.0.84.88 linux-image-oem 5.4.0.84.88 linux-image-oem-osp1 5.4.0.84.88 linux-image-oracle-lts-20.04 5.4.0.1054.54 linux-image-virtual 5.4.0.84.88
Ubuntu 18.04 LTS: linux-image-5.4.0-1023-gkeop 5.4.0-1023.24~18.04.1 linux-image-5.4.0-1052-gcp 5.4.0-1052.56~18.04.1 linux-image-5.4.0-1052-gke 5.4.0-1052.55~18.04.1 linux-image-5.4.0-1054-oracle 5.4.0-1054.58~18.04.1 linux-image-5.4.0-1056-aws 5.4.0-1056.59~18.04.1 linux-image-5.4.0-1058-azure 5.4.0-1058.60~18.04.1 linux-image-aws 5.4.0.1056.39 linux-image-azure 5.4.0.1058.38 linux-image-gcp 5.4.0.1052.38 linux-image-gke-5.4 5.4.0.1052.55~18.04.17 linux-image-gkeop-5.4 5.4.0.1023.24~18.04.24 linux-image-oracle 5.4.0.1054.58~18.04.34
After a standard system update you need to reboot your computer to make all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. 6 ELS) - i386, s390x, x86_64
-
8.2) - aarch64, noarch, ppc64le, s390x, x86_64
Bug Fix(es):
-
[Regression] RHEL8.2 - ISST-LTE:pVM:diapvmlp83:sum:memory DLPAR fails to add memory on multiple trials[mm/memory_hotplug.c:1163] (mm-) (BZ#1930169)
-
Every server is displaying the same power levels for all of our i40e 25G interfaces. 10G interfaces seem to be correct. Ethtool version is 5.0 (BZ#1967100)
-
s390/uv: Fix handling of length extensions (BZ#1975657)
-
RHEL 8.3 using FCOE via a FastLinQ QL45000 card will not manually scan in LUN from Target_id's over 8 (BZ#1976265)
-
Backport "tick/nohz: Conditionally restart tick on idle exit" to RHEL 8.5 (BZ#1978711)
-
rhel8.3: phase 2 netfilter backports from upstream (BZ#1980323)
-
xfrm: backports from upstream (BZ#1981841)
Enhancement(s):
-
[8.2.z] Incorrect parsing of ACPI HMAT table reports incorrect kernel WARNING taint (BZ#1943702)
-
Only selected patches from [IBM 8.4 FEAT] ibmvnic: Backport FW950 and assorted bug fixes (BZ#1980795)
-
(CVE-2021-3679)
Alois Wohlschlager discovered that the overlay file system in the Linux kernel did not restrict private clones in some situations. An attacker could use this information to ease the exploitation of another vulnerability. 7.7) - ppc64le, x86_64
- 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. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256
===================================================================== Red Hat Security Advisory
Synopsis: Important: kernel security and bug fix update Advisory ID: RHSA-2021:3987-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:3987 Issue date: 2021-10-26 CVE Names: CVE-2019-20934 CVE-2020-36385 CVE-2021-3653 CVE-2021-3656 CVE-2021-22543 CVE-2021-37576 =====================================================================
- Summary:
An update for kernel is now available for Red Hat Enterprise Linux 7.7 Advanced Update Support, Red Hat Enterprise Linux 7.7 Telco Extended Update Support, and Red Hat Enterprise Linux 7.7 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.
- Relevant releases/architectures:
Red Hat Enterprise Linux Server AUS (v. 7.7) - noarch, x86_64 Red Hat Enterprise Linux Server E4S (v. 7.7) - noarch, ppc64le, x86_64 Red Hat Enterprise Linux Server Optional AUS (v. 7.7) - x86_64 Red Hat Enterprise Linux Server Optional E4S (v. 7.6) - ppc64le, x86_64 Red Hat Enterprise Linux Server Optional TUS (v. 7.7) - x86_64 Red Hat Enterprise Linux Server TUS (v. 7.7) - noarch, x86_64
- Description:
The kernel packages contain the Linux kernel, the core of any Linux operating system.
Bug Fix(es):
-
A race between i40e_ndo_set_vf_mac() and i40e_vsi_clear() in the i40e driver causes a use after free condition of the kmalloc-4096 slab cache. (BZ#1980333)
-
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.
- Package List:
Red Hat Enterprise Linux Server AUS (v. 7.7):
Source: kernel-3.10.0-1062.59.1.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-1062.59.1.el7.noarch.rpm kernel-doc-3.10.0-1062.59.1.el7.noarch.rpm
x86_64: bpftool-3.10.0-1062.59.1.el7.x86_64.rpm bpftool-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm kernel-3.10.0-1062.59.1.el7.x86_64.rpm kernel-debug-3.10.0-1062.59.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-1062.59.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-1062.59.1.el7.x86_64.rpm kernel-devel-3.10.0-1062.59.1.el7.x86_64.rpm kernel-headers-3.10.0-1062.59.1.el7.x86_64.rpm kernel-tools-3.10.0-1062.59.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-1062.59.1.el7.x86_64.rpm perf-3.10.0-1062.59.1.el7.x86_64.rpm perf-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm python-perf-3.10.0-1062.59.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server E4S (v. 7.7):
Source: kernel-3.10.0-1062.59.1.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-1062.59.1.el7.noarch.rpm kernel-doc-3.10.0-1062.59.1.el7.noarch.rpm
ppc64le: bpftool-3.10.0-1062.59.1.el7.ppc64le.rpm bpftool-debuginfo-3.10.0-1062.59.1.el7.ppc64le.rpm kernel-3.10.0-1062.59.1.el7.ppc64le.rpm kernel-bootwrapper-3.10.0-1062.59.1.el7.ppc64le.rpm kernel-debug-3.10.0-1062.59.1.el7.ppc64le.rpm kernel-debug-debuginfo-3.10.0-1062.59.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-1062.59.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-1062.59.1.el7.ppc64le.rpm kernel-devel-3.10.0-1062.59.1.el7.ppc64le.rpm kernel-headers-3.10.0-1062.59.1.el7.ppc64le.rpm kernel-tools-3.10.0-1062.59.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-1062.59.1.el7.ppc64le.rpm kernel-tools-libs-3.10.0-1062.59.1.el7.ppc64le.rpm perf-3.10.0-1062.59.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-1062.59.1.el7.ppc64le.rpm python-perf-3.10.0-1062.59.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-1062.59.1.el7.ppc64le.rpm
x86_64: bpftool-3.10.0-1062.59.1.el7.x86_64.rpm bpftool-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm kernel-3.10.0-1062.59.1.el7.x86_64.rpm kernel-debug-3.10.0-1062.59.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-1062.59.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-1062.59.1.el7.x86_64.rpm kernel-devel-3.10.0-1062.59.1.el7.x86_64.rpm kernel-headers-3.10.0-1062.59.1.el7.x86_64.rpm kernel-tools-3.10.0-1062.59.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-1062.59.1.el7.x86_64.rpm perf-3.10.0-1062.59.1.el7.x86_64.rpm perf-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm python-perf-3.10.0-1062.59.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server TUS (v. 7.7):
Source: kernel-3.10.0-1062.59.1.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-1062.59.1.el7.noarch.rpm kernel-doc-3.10.0-1062.59.1.el7.noarch.rpm
x86_64: bpftool-3.10.0-1062.59.1.el7.x86_64.rpm bpftool-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm kernel-3.10.0-1062.59.1.el7.x86_64.rpm kernel-debug-3.10.0-1062.59.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-1062.59.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-1062.59.1.el7.x86_64.rpm kernel-devel-3.10.0-1062.59.1.el7.x86_64.rpm kernel-headers-3.10.0-1062.59.1.el7.x86_64.rpm kernel-tools-3.10.0-1062.59.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-1062.59.1.el7.x86_64.rpm perf-3.10.0-1062.59.1.el7.x86_64.rpm perf-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm python-perf-3.10.0-1062.59.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server Optional AUS (v. 7.7):
x86_64: bpftool-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-1062.59.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-1062.59.1.el7.x86_64.rpm perf-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server Optional E4S (v. 7.6):
ppc64le: bpftool-debuginfo-3.10.0-1062.59.1.el7.ppc64le.rpm kernel-debug-debuginfo-3.10.0-1062.59.1.el7.ppc64le.rpm kernel-debug-devel-3.10.0-1062.59.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-1062.59.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-1062.59.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-1062.59.1.el7.ppc64le.rpm kernel-tools-libs-devel-3.10.0-1062.59.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-1062.59.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-1062.59.1.el7.ppc64le.rpm
x86_64: bpftool-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-1062.59.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-1062.59.1.el7.x86_64.rpm perf-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server Optional TUS (v. 7.7):
x86_64: bpftool-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-1062.59.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-1062.59.1.el7.x86_64.rpm perf-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-1062.59.1.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/
- References:
https://access.redhat.com/security/cve/CVE-2019-20934 https://access.redhat.com/security/cve/CVE-2020-36385 https://access.redhat.com/security/cve/CVE-2021-3653 https://access.redhat.com/security/cve/CVE-2021-3656 https://access.redhat.com/security/cve/CVE-2021-22543 https://access.redhat.com/security/cve/CVE-2021-37576 https://access.redhat.com/security/updates/classification/#important
- 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. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1
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-- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce
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"data": "An issue was discovered in Linux: KVM through Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks and can lead to pages being freed while still accessible by the VMM and guest. This allows users with the ability to start and control a VM to read/write random pages of memory and can result in local privilege escalation. Arch Linux is an application system of Arch open source. A lightweight and flexible Linux\u00ae distribution that tries to keep it simple. Description:\n\nRed Hat Advanced Cluster Management for Kubernetes 2.3.3 images\n\nRed Hat Advanced Cluster Management for Kubernetes provides the\ncapabilities to address common challenges that administrators and site\nreliability engineers face as they work across a range of public and\nprivate cloud environments. Clusters and applications are all visible and\nmanaged from a single console\u2014with\nsecurity policy built in. See the following Release Notes documentation, which will be\nupdated shortly for this release, for additional details about this\nrelease:\n\nhttps://access.redhat.com/documentation/en-us/red_hat_advanced_cluster_mana\ngement_for_kubernetes/2.3/html/release_notes/\n\nNote: Because Red Hat OpenShift Container Platform version 4.9 was just\nreleased, the functional testing of the compatibility between Red Hat\nAdvanced Cluster Management 2.3.3 and Red Hat OpenShift Container Platform\nversion 4.9 is still in progress. \n\nSecurity fixes: \n\n* nginx: Off-by-one in ngx_resolver_copy() when labels are followed by a\npointer to a root domain name (CVE-2021-23017)\n\n* redis: Lua scripts can overflow the heap-based Lua stack (CVE-2021-32626)\n\n* redis: Integer overflow issue with Streams (CVE-2021-32627)\n\n* redis: Integer overflow bug in the ziplist data structure\n(CVE-2021-32628)\n\n* redis: Integer overflow issue with intsets (CVE-2021-32687)\n\n* redis: Integer overflow issue with strings (CVE-2021-41099)\n\n* redis: Out of bounds read in lua debugger protocol parser\n(CVE-2021-32672)\n\n* redis: Denial of service via Redis Standard Protocol (RESP) request\n(CVE-2021-32675)\n\n* helm: information disclosure vulnerability (CVE-2021-32690)\n\nBug fixes:\n\n* KUBE-API: Support move agent to different cluster in the same namespace\n(BZ# 1977358)\n\n* Add columns to the Agent CRD list (BZ# 1977398)\n\n* ClusterDeployment controller watches all Secrets from all namespaces (BZ#\n1986081)\n\n* RHACM 2.3.3 images (BZ# 1999365)\n\n* Workaround for Network Manager not supporting nmconnections priority (BZ#\n2001294)\n\n* create cluster page empty in Safary Browser (BZ# 2002280)\n\n* Compliance state doesn\u0027t get updated after fixing the issue causing\ninitially the policy not being able to update the managed object (BZ#\n2002667)\n\n* Overview page displays VMware based managed cluster as other (BZ#\n2004188)\n\n3. Solution:\n\nBefore applying this update, make sure all previously released errata\nrelevant to your system have been applied. Bugs fixed (https://bugzilla.redhat.com/):\n\n1963121 - CVE-2021-23017 nginx: Off-by-one in ngx_resolver_copy() when labels are followed by a pointer to a root domain name\n1977358 - [4.8.0] KUBE-API: Support move agent to different cluster in the same namespace\n1977398 - [4.8.0] [master] Add columns to the Agent CRD list\n1978144 - CVE-2021-32690 helm: information disclosure vulnerability\n1986081 - [4.8.0] ClusterDeployment controller watches all Secrets from all namespaces\n1999365 - RHACM 2.3.3 images\n2001294 - [4.8.0] Workaround for Network Manager not supporting nmconnections priority\n2002280 - create cluster page empty in Safary Browser\n2002667 - Compliance state doesn\u0027t get updated after fixing the issue causing initially the policy not being able to update the managed object\n2004188 - Overview page displays VMware based managed cluster as other\n2010991 - CVE-2021-32687 redis: Integer overflow issue with intsets\n2011000 - CVE-2021-32675 redis: Denial of service via Redis Standard Protocol (RESP) request\n2011001 - CVE-2021-32672 redis: Out of bounds read in lua debugger protocol parser\n2011004 - CVE-2021-32628 redis: Integer overflow bug in the ziplist data structure\n2011010 - CVE-2021-32627 redis: Integer overflow issue with Streams\n2011017 - CVE-2021-32626 redis: Lua scripts can overflow the heap-based Lua stack\n2011020 - CVE-2021-41099 redis: Integer overflow issue with strings\n\n5. Description:\n\nThe kernel-rt packages provide the Real Time Linux Kernel, which enables\nfine-tuning for systems with extremely high determinism requirements. \n\nBug Fix(es):\n\n* Indefinite waiting for RCU callback while removing cgroup (BZ#1967844)\n\n* kernel-rt: update to the latest RHEL7.9.z9 source tree (BZ#2002994)\n\n4. 7.3) - x86_64\n\n3. ==========================================================================\nUbuntu Security Notice USN-5071-1\nSeptember 08, 2021\n\nlinux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp,\nlinux-gcp-5.4, linux-gke, linux-gke-5.4, linux-gkeop, linux-gkeop-5.4,\nlinux-kvm, linux-oracle, linux-oracle-5.4 vulnerabilities\n==========================================================================\n\nA security issue affects these releases of Ubuntu and its derivatives:\n\n- Ubuntu 20.04 LTS\n- Ubuntu 18.04 LTS\n\nSummary:\n\nSeveral security issues were fixed in the Linux kernel. An attacker in a\nguest VM could use this to read or write portions of the host\u0027s physical\nmemory. (CVE-2021-3656)\n\nMaxim Levitsky discovered that the KVM hypervisor implementation for AMD\nprocessors in the Linux kernel did not properly prevent a guest VM from\nenabling AVIC in nested guest VMs. An attacker in a guest VM could use this\nto write to portions of the host\u0027s physical memory. (CVE-2021-3653)\n\nIt was discovered that the KVM hypervisor implementation for AMD processors\nin the Linux kernel did not ensure enough processing time was given to\nperform cleanups of large SEV VMs. A local attacker could use this to cause\na denial of service (soft lockup). (CVE-2020-36311)\n\nIt was discovered that the KVM hypervisor implementation in the Linux\nkernel did not properly perform reference counting in some situations,\nleading to a use-after-free vulnerability. An attacker who could start and\ncontrol a VM could possibly use this to expose sensitive information or\nexecute arbitrary code. (CVE-2021-22543)\n\nMurray McAllister discovered that the joystick device interface in the\nLinux kernel did not properly validate data passed via an ioctl(). A local\nattacker could use this to cause a denial of service (system crash) or\npossibly execute arbitrary code on systems with a joystick device\nregistered. (CVE-2021-3612)\n\nUpdate instructions:\n\nThe problem can be corrected by updating your system to the following\npackage versions:\n\nUbuntu 20.04 LTS:\n linux-image-5.4.0-1023-gkeop 5.4.0-1023.24\n linux-image-5.4.0-1046-kvm 5.4.0-1046.48\n linux-image-5.4.0-1052-gcp 5.4.0-1052.56\n linux-image-5.4.0-1052-gke 5.4.0-1052.55\n linux-image-5.4.0-1054-oracle 5.4.0-1054.58\n linux-image-5.4.0-1056-aws 5.4.0-1056.59\n linux-image-5.4.0-1058-azure 5.4.0-1058.60\n linux-image-5.4.0-84-generic 5.4.0-84.94\n linux-image-5.4.0-84-generic-lpae 5.4.0-84.94\n linux-image-5.4.0-84-lowlatency 5.4.0-84.94\n linux-image-aws-lts-20.04 5.4.0.1056.59\n linux-image-azure-lts-20.04 5.4.0.1058.56\n linux-image-gcp-lts-20.04 5.4.0.1052.62\n linux-image-generic 5.4.0.84.88\n linux-image-generic-lpae 5.4.0.84.88\n linux-image-gke 5.4.0.1052.62\n linux-image-gke-5.4 5.4.0.1052.62\n linux-image-gkeop 5.4.0.1023.26\n linux-image-gkeop-5.4 5.4.0.1023.26\n linux-image-kvm 5.4.0.1046.45\n linux-image-lowlatency 5.4.0.84.88\n linux-image-oem 5.4.0.84.88\n linux-image-oem-osp1 5.4.0.84.88\n linux-image-oracle-lts-20.04 5.4.0.1054.54\n linux-image-virtual 5.4.0.84.88\n\nUbuntu 18.04 LTS:\n linux-image-5.4.0-1023-gkeop 5.4.0-1023.24~18.04.1\n linux-image-5.4.0-1052-gcp 5.4.0-1052.56~18.04.1\n linux-image-5.4.0-1052-gke 5.4.0-1052.55~18.04.1\n linux-image-5.4.0-1054-oracle 5.4.0-1054.58~18.04.1\n linux-image-5.4.0-1056-aws 5.4.0-1056.59~18.04.1\n linux-image-5.4.0-1058-azure 5.4.0-1058.60~18.04.1\n linux-image-aws 5.4.0.1056.39\n linux-image-azure 5.4.0.1058.38\n linux-image-gcp 5.4.0.1052.38\n linux-image-gke-5.4 5.4.0.1052.55~18.04.17\n linux-image-gkeop-5.4 5.4.0.1023.24~18.04.24\n linux-image-oracle 5.4.0.1054.58~18.04.34\n\nAfter a standard system update you need to reboot your computer to make\nall the necessary changes. \n\nATTENTION: Due to an unavoidable ABI change the kernel updates have\nbeen given a new version number, which requires you to recompile and\nreinstall all third party kernel modules you might have installed. \nUnless you manually uninstalled the standard kernel metapackages\n(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,\nlinux-powerpc), a standard system upgrade will automatically perform\nthis as well. 6 ELS) - i386, s390x, x86_64\n\n3. 8.2) - aarch64, noarch, ppc64le, s390x, x86_64\n\n3. \n\nBug Fix(es):\n\n* [Regression] RHEL8.2 - ISST-LTE:pVM:diapvmlp83:sum:memory DLPAR fails to\nadd memory on multiple trials[mm/memory_hotplug.c:1163] (mm-) (BZ#1930169)\n\n* Every server is displaying the same power levels for all of our i40e 25G\ninterfaces. 10G interfaces seem to be correct. Ethtool version is 5.0\n(BZ#1967100)\n\n* s390/uv: Fix handling of length extensions (BZ#1975657)\n\n* RHEL 8.3 using FCOE via a FastLinQ QL45000 card will not manually scan in\nLUN from Target_id\u0027s over 8 (BZ#1976265)\n\n* Backport \"tick/nohz: Conditionally restart tick on idle exit\" to RHEL 8.5\n(BZ#1978711)\n\n* rhel8.3: phase 2 netfilter backports from upstream (BZ#1980323)\n\n* xfrm: backports from upstream (BZ#1981841)\n\nEnhancement(s):\n\n* [8.2.z] Incorrect parsing of ACPI HMAT table reports incorrect kernel\nWARNING taint (BZ#1943702)\n\n* Only selected patches from [IBM 8.4 FEAT] ibmvnic: Backport FW950 and\nassorted bug fixes (BZ#1980795)\n\n4. (CVE-2021-3679)\n\nAlois Wohlschlager discovered that the overlay file system in the Linux\nkernel did not restrict private clones in some situations. An attacker\ncould use this information to ease the exploitation of another\nvulnerability. 7.7) - ppc64le, x86_64\n\n3. Description:\n\nThis is a kernel live patch module which is automatically loaded by the RPM\npost-install script to modify the code of a running kernel. -----BEGIN PGP SIGNED MESSAGE-----\nHash: SHA256\n\n=====================================================================\n Red Hat Security Advisory\n\nSynopsis: Important: kernel security and bug fix update\nAdvisory ID: RHSA-2021:3987-01\nProduct: Red Hat Enterprise Linux\nAdvisory URL: https://access.redhat.com/errata/RHSA-2021:3987\nIssue date: 2021-10-26\nCVE Names: CVE-2019-20934 CVE-2020-36385 CVE-2021-3653 \n CVE-2021-3656 CVE-2021-22543 CVE-2021-37576 \n=====================================================================\n\n1. Summary:\n\nAn update for kernel is now available for Red Hat Enterprise Linux 7.7\nAdvanced Update Support, Red Hat Enterprise Linux 7.7 Telco Extended Update\nSupport, and Red Hat Enterprise Linux 7.7 Update Services for SAP\nSolutions. \n\nRed Hat Product Security has rated this update as having a security impact\nof Important. A Common Vulnerability Scoring System (CVSS) base score,\nwhich gives a detailed severity rating, is available for each vulnerability\nfrom the CVE link(s) in the References section. \n\n2. Relevant releases/architectures:\n\nRed Hat Enterprise Linux Server AUS (v. 7.7) - noarch, x86_64\nRed Hat Enterprise Linux Server E4S (v. 7.7) - noarch, ppc64le, x86_64\nRed Hat Enterprise Linux Server Optional AUS (v. 7.7) - x86_64\nRed Hat Enterprise Linux Server Optional E4S (v. 7.6) - ppc64le, x86_64\nRed Hat Enterprise Linux Server Optional TUS (v. 7.7) - x86_64\nRed Hat Enterprise Linux Server TUS (v. 7.7) - noarch, x86_64\n\n3. Description:\n\nThe kernel packages contain the Linux kernel, the core of any Linux\noperating system. \n\nBug Fix(es):\n\n* A race between i40e_ndo_set_vf_mac() and i40e_vsi_clear() in the i40e\ndriver causes a use after free condition of the kmalloc-4096 slab cache. \n(BZ#1980333)\n\n4. Solution:\n\nFor details on how to apply this update, which includes the changes\ndescribed in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect. \n\n5. Package List:\n\nRed Hat Enterprise Linux Server AUS (v. 7.7):\n\nSource:\nkernel-3.10.0-1062.59.1.el7.src.rpm\n\nnoarch:\nkernel-abi-whitelists-3.10.0-1062.59.1.el7.noarch.rpm\nkernel-doc-3.10.0-1062.59.1.el7.noarch.rpm\n\nx86_64:\nbpftool-3.10.0-1062.59.1.el7.x86_64.rpm\nbpftool-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm\nkernel-3.10.0-1062.59.1.el7.x86_64.rpm\nkernel-debug-3.10.0-1062.59.1.el7.x86_64.rpm\nkernel-debug-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm\nkernel-debug-devel-3.10.0-1062.59.1.el7.x86_64.rpm\nkernel-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm\nkernel-debuginfo-common-x86_64-3.10.0-1062.59.1.el7.x86_64.rpm\nkernel-devel-3.10.0-1062.59.1.el7.x86_64.rpm\nkernel-headers-3.10.0-1062.59.1.el7.x86_64.rpm\nkernel-tools-3.10.0-1062.59.1.el7.x86_64.rpm\nkernel-tools-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm\nkernel-tools-libs-3.10.0-1062.59.1.el7.x86_64.rpm\nperf-3.10.0-1062.59.1.el7.x86_64.rpm\nperf-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm\npython-perf-3.10.0-1062.59.1.el7.x86_64.rpm\npython-perf-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm\n\nRed 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Optional TUS (v. 7.7):\n\nx86_64:\nbpftool-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm\nkernel-debug-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm\nkernel-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm\nkernel-debuginfo-common-x86_64-3.10.0-1062.59.1.el7.x86_64.rpm\nkernel-tools-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm\nkernel-tools-libs-devel-3.10.0-1062.59.1.el7.x86_64.rpm\nperf-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm\npython-perf-debuginfo-3.10.0-1062.59.1.el7.x86_64.rpm\n\nThese packages are GPG signed by Red Hat for security. Our key and\ndetails on how to verify the signature are available from\nhttps://access.redhat.com/security/team/key/\n\n7. References:\n\nhttps://access.redhat.com/security/cve/CVE-2019-20934\nhttps://access.redhat.com/security/cve/CVE-2020-36385\nhttps://access.redhat.com/security/cve/CVE-2021-3653\nhttps://access.redhat.com/security/cve/CVE-2021-3656\nhttps://access.redhat.com/security/cve/CVE-2021-22543\nhttps://access.redhat.com/security/cve/CVE-2021-37576\nhttps://access.redhat.com/security/updates/classification/#important\n\n8. Contact:\n\nThe Red Hat security contact is \u003csecalert@redhat.com\u003e. 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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.