ID

VAR-202105-1451

CVE

CVE-2021-22543

TITLE

KVM Buffer error vulnerability

DESCRIPTION

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® distribution that tries to keep it simple. 7) - noarch, 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. 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) 4. 8) - ppc64le, 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. ========================================================================== Ubuntu Security Notice USN-5071-2 September 16, 2021 linux-hwe-5.4 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 18.04 LTS Summary: Several security issues were fixed in the Linux kernel. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 20.04 LTS for Ubuntu 18.04 LTS. Maxim Levitsky and Paolo Bonzini discovered that the KVM hypervisor implementation for AMD processors in the Linux kernel allowed a guest VM to disable restrictions on VMLOAD/VMSAVE in a nested guest. 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 18.04 LTS: linux-image-5.4.0-84-generic 5.4.0-84.94~18.04.1 linux-image-5.4.0-84-generic-lpae 5.4.0-84.94~18.04.1 linux-image-5.4.0-84-lowlatency 5.4.0-84.94~18.04.1 linux-image-generic-hwe-18.04 5.4.0.84.94~18.04.75 linux-image-generic-lpae-hwe-18.04 5.4.0.84.94~18.04.75 linux-image-lowlatency-hwe-18.04 5.4.0.84.94~18.04.75 linux-image-oem 5.4.0.84.94~18.04.75 linux-image-oem-osp1 5.4.0.84.94~18.04.75 linux-image-snapdragon-hwe-18.04 5.4.0.84.94~18.04.75 linux-image-virtual-hwe-18.04 5.4.0.84.94~18.04.75 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. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: kernel security update Advisory ID: RHSA-2021:3173-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:3173 Issue date: 2021-08-17 CVE Names: CVE-2021-22543 CVE-2021-22555 CVE-2021-32399 ==================================================================== 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: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks (CVE-2021-22543) * kernel: out-of-bounds write in xt_compat_target_from_user() in net/netfilter/x_tables.c (CVE-2021-22555) * kernel: race condition for removal of the HCI controller (CVE-2021-32399) 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 The system must be rebooted for this update to take effect. 5. Package List: Red Hat Enterprise Linux BaseOS EUS (v. 8.1): Source: kernel-4.18.0-147.52.1.el8_1.src.rpm aarch64: bpftool-4.18.0-147.52.1.el8_1.aarch64.rpm bpftool-debuginfo-4.18.0-147.52.1.el8_1.aarch64.rpm kernel-4.18.0-147.52.1.el8_1.aarch64.rpm kernel-core-4.18.0-147.52.1.el8_1.aarch64.rpm kernel-cross-headers-4.18.0-147.52.1.el8_1.aarch64.rpm kernel-debug-4.18.0-147.52.1.el8_1.aarch64.rpm kernel-debug-core-4.18.0-147.52.1.el8_1.aarch64.rpm kernel-debug-debuginfo-4.18.0-147.52.1.el8_1.aarch64.rpm kernel-debug-devel-4.18.0-147.52.1.el8_1.aarch64.rpm kernel-debug-modules-4.18.0-147.52.1.el8_1.aarch64.rpm kernel-debug-modules-extra-4.18.0-147.52.1.el8_1.aarch64.rpm kernel-debuginfo-4.18.0-147.52.1.el8_1.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-147.52.1.el8_1.aarch64.rpm kernel-devel-4.18.0-147.52.1.el8_1.aarch64.rpm kernel-headers-4.18.0-147.52.1.el8_1.aarch64.rpm kernel-modules-4.18.0-147.52.1.el8_1.aarch64.rpm kernel-modules-extra-4.18.0-147.52.1.el8_1.aarch64.rpm kernel-tools-4.18.0-147.52.1.el8_1.aarch64.rpm kernel-tools-debuginfo-4.18.0-147.52.1.el8_1.aarch64.rpm kernel-tools-libs-4.18.0-147.52.1.el8_1.aarch64.rpm perf-4.18.0-147.52.1.el8_1.aarch64.rpm perf-debuginfo-4.18.0-147.52.1.el8_1.aarch64.rpm python3-perf-4.18.0-147.52.1.el8_1.aarch64.rpm python3-perf-debuginfo-4.18.0-147.52.1.el8_1.aarch64.rpm noarch: kernel-abi-whitelists-4.18.0-147.52.1.el8_1.noarch.rpm kernel-doc-4.18.0-147.52.1.el8_1.noarch.rpm ppc64le: bpftool-4.18.0-147.52.1.el8_1.ppc64le.rpm bpftool-debuginfo-4.18.0-147.52.1.el8_1.ppc64le.rpm kernel-4.18.0-147.52.1.el8_1.ppc64le.rpm kernel-core-4.18.0-147.52.1.el8_1.ppc64le.rpm kernel-cross-headers-4.18.0-147.52.1.el8_1.ppc64le.rpm kernel-debug-4.18.0-147.52.1.el8_1.ppc64le.rpm kernel-debug-core-4.18.0-147.52.1.el8_1.ppc64le.rpm kernel-debug-debuginfo-4.18.0-147.52.1.el8_1.ppc64le.rpm kernel-debug-devel-4.18.0-147.52.1.el8_1.ppc64le.rpm kernel-debug-modules-4.18.0-147.52.1.el8_1.ppc64le.rpm kernel-debug-modules-extra-4.18.0-147.52.1.el8_1.ppc64le.rpm kernel-debuginfo-4.18.0-147.52.1.el8_1.ppc64le.rpm kernel-debuginfo-common-ppc64le-4.18.0-147.52.1.el8_1.ppc64le.rpm kernel-devel-4.18.0-147.52.1.el8_1.ppc64le.rpm kernel-headers-4.18.0-147.52.1.el8_1.ppc64le.rpm kernel-modules-4.18.0-147.52.1.el8_1.ppc64le.rpm kernel-modules-extra-4.18.0-147.52.1.el8_1.ppc64le.rpm kernel-tools-4.18.0-147.52.1.el8_1.ppc64le.rpm kernel-tools-debuginfo-4.18.0-147.52.1.el8_1.ppc64le.rpm kernel-tools-libs-4.18.0-147.52.1.el8_1.ppc64le.rpm perf-4.18.0-147.52.1.el8_1.ppc64le.rpm perf-debuginfo-4.18.0-147.52.1.el8_1.ppc64le.rpm python3-perf-4.18.0-147.52.1.el8_1.ppc64le.rpm python3-perf-debuginfo-4.18.0-147.52.1.el8_1.ppc64le.rpm s390x: bpftool-4.18.0-147.52.1.el8_1.s390x.rpm bpftool-debuginfo-4.18.0-147.52.1.el8_1.s390x.rpm kernel-4.18.0-147.52.1.el8_1.s390x.rpm kernel-core-4.18.0-147.52.1.el8_1.s390x.rpm kernel-cross-headers-4.18.0-147.52.1.el8_1.s390x.rpm kernel-debug-4.18.0-147.52.1.el8_1.s390x.rpm kernel-debug-core-4.18.0-147.52.1.el8_1.s390x.rpm kernel-debug-debuginfo-4.18.0-147.52.1.el8_1.s390x.rpm kernel-debug-devel-4.18.0-147.52.1.el8_1.s390x.rpm kernel-debug-modules-4.18.0-147.52.1.el8_1.s390x.rpm kernel-debug-modules-extra-4.18.0-147.52.1.el8_1.s390x.rpm kernel-debuginfo-4.18.0-147.52.1.el8_1.s390x.rpm kernel-debuginfo-common-s390x-4.18.0-147.52.1.el8_1.s390x.rpm kernel-devel-4.18.0-147.52.1.el8_1.s390x.rpm kernel-headers-4.18.0-147.52.1.el8_1.s390x.rpm kernel-modules-4.18.0-147.52.1.el8_1.s390x.rpm kernel-modules-extra-4.18.0-147.52.1.el8_1.s390x.rpm kernel-tools-4.18.0-147.52.1.el8_1.s390x.rpm kernel-tools-debuginfo-4.18.0-147.52.1.el8_1.s390x.rpm kernel-zfcpdump-4.18.0-147.52.1.el8_1.s390x.rpm kernel-zfcpdump-core-4.18.0-147.52.1.el8_1.s390x.rpm kernel-zfcpdump-debuginfo-4.18.0-147.52.1.el8_1.s390x.rpm kernel-zfcpdump-devel-4.18.0-147.52.1.el8_1.s390x.rpm kernel-zfcpdump-modules-4.18.0-147.52.1.el8_1.s390x.rpm kernel-zfcpdump-modules-extra-4.18.0-147.52.1.el8_1.s390x.rpm perf-4.18.0-147.52.1.el8_1.s390x.rpm perf-debuginfo-4.18.0-147.52.1.el8_1.s390x.rpm python3-perf-4.18.0-147.52.1.el8_1.s390x.rpm python3-perf-debuginfo-4.18.0-147.52.1.el8_1.s390x.rpm x86_64: bpftool-4.18.0-147.52.1.el8_1.x86_64.rpm bpftool-debuginfo-4.18.0-147.52.1.el8_1.x86_64.rpm kernel-4.18.0-147.52.1.el8_1.x86_64.rpm kernel-core-4.18.0-147.52.1.el8_1.x86_64.rpm kernel-cross-headers-4.18.0-147.52.1.el8_1.x86_64.rpm kernel-debug-4.18.0-147.52.1.el8_1.x86_64.rpm kernel-debug-core-4.18.0-147.52.1.el8_1.x86_64.rpm kernel-debug-debuginfo-4.18.0-147.52.1.el8_1.x86_64.rpm kernel-debug-devel-4.18.0-147.52.1.el8_1.x86_64.rpm kernel-debug-modules-4.18.0-147.52.1.el8_1.x86_64.rpm kernel-debug-modules-extra-4.18.0-147.52.1.el8_1.x86_64.rpm kernel-debuginfo-4.18.0-147.52.1.el8_1.x86_64.rpm kernel-debuginfo-common-x86_64-4.18.0-147.52.1.el8_1.x86_64.rpm kernel-devel-4.18.0-147.52.1.el8_1.x86_64.rpm kernel-headers-4.18.0-147.52.1.el8_1.x86_64.rpm kernel-modules-4.18.0-147.52.1.el8_1.x86_64.rpm kernel-modules-extra-4.18.0-147.52.1.el8_1.x86_64.rpm kernel-tools-4.18.0-147.52.1.el8_1.x86_64.rpm kernel-tools-debuginfo-4.18.0-147.52.1.el8_1.x86_64.rpm kernel-tools-libs-4.18.0-147.52.1.el8_1.x86_64.rpm perf-4.18.0-147.52.1.el8_1.x86_64.rpm perf-debuginfo-4.18.0-147.52.1.el8_1.x86_64.rpm python3-perf-4.18.0-147.52.1.el8_1.x86_64.rpm python3-perf-debuginfo-4.18.0-147.52.1.el8_1.x86_64.rpm Red Hat CodeReady Linux Builder EUS (v. 8.1): aarch64: bpftool-debuginfo-4.18.0-147.52.1.el8_1.aarch64.rpm kernel-debug-debuginfo-4.18.0-147.52.1.el8_1.aarch64.rpm kernel-debuginfo-4.18.0-147.52.1.el8_1.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-147.52.1.el8_1.aarch64.rpm kernel-tools-debuginfo-4.18.0-147.52.1.el8_1.aarch64.rpm kernel-tools-libs-devel-4.18.0-147.52.1.el8_1.aarch64.rpm perf-debuginfo-4.18.0-147.52.1.el8_1.aarch64.rpm python3-perf-debuginfo-4.18.0-147.52.1.el8_1.aarch64.rpm ppc64le: bpftool-debuginfo-4.18.0-147.52.1.el8_1.ppc64le.rpm kernel-debug-debuginfo-4.18.0-147.52.1.el8_1.ppc64le.rpm kernel-debuginfo-4.18.0-147.52.1.el8_1.ppc64le.rpm kernel-debuginfo-common-ppc64le-4.18.0-147.52.1.el8_1.ppc64le.rpm kernel-tools-debuginfo-4.18.0-147.52.1.el8_1.ppc64le.rpm kernel-tools-libs-devel-4.18.0-147.52.1.el8_1.ppc64le.rpm perf-debuginfo-4.18.0-147.52.1.el8_1.ppc64le.rpm python3-perf-debuginfo-4.18.0-147.52.1.el8_1.ppc64le.rpm x86_64: bpftool-debuginfo-4.18.0-147.52.1.el8_1.x86_64.rpm kernel-debug-debuginfo-4.18.0-147.52.1.el8_1.x86_64.rpm kernel-debuginfo-4.18.0-147.52.1.el8_1.x86_64.rpm kernel-debuginfo-common-x86_64-4.18.0-147.52.1.el8_1.x86_64.rpm kernel-tools-debuginfo-4.18.0-147.52.1.el8_1.x86_64.rpm kernel-tools-libs-devel-4.18.0-147.52.1.el8_1.x86_64.rpm perf-debuginfo-4.18.0-147.52.1.el8_1.x86_64.rpm python3-perf-debuginfo-4.18.0-147.52.1.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-2021-22543 https://access.redhat.com/security/cve/CVE-2021-22555 https://access.redhat.com/security/cve/CVE-2021-32399 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. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBYRt0V9zjgjWX9erEAQhtXA//aYC21FEfVSYF/0N1IMsDlT59NZZlvIpX i/SdhfzvO2iXNo3gqQWXvjxd+QKULAD0UbzKMNqln94MPZYGiY1IGJeHh8jdgjTV OKGMkXSloGs4neDgDCoG07+F3CGdlH5yty7/F6vFEHJ2TKajxUHCC32a1av/o85v iG7+TDG7wa5AS9q5W4rBNvyjuR6+0IKXYa3PlP5j3yD++sk8pwX8I6tjuGIQGcyt XqddLaTn4RcX1rJROF7M67Wix80q6vndt6QLNZnEEHGltKsr376vyAXqPS/xhxTy nOpCR0X+E4TiYF6bQJCaz8b7ZSORC4eW84/d46JUN3O0GYOr996zq+rZaxxQKACs icAqQxTMsDKf57sfRiyUi89HFq5TzWwORplURkwh7F3LbqrNoX8bZk6ZNiiaQdKi klNj/W6vKR+Dlj+72JJs7IV+lc5sP088bY5ORdEe3KyLkfcmVrDM5LODwdPlCAHi 9dLFe3l0HL3cBu4vRI7VLH8SsSNgyBo68LjFUZs6SqoYzU2xmr+2nrjy99zESQma Z6b6tyD0zYRhgPu5bVKmhZDrGyJFGtEXr/9E1St+xRPw1DQ4FGQ85ibW89q+GNN/ dbY5JB9vAtQpTwXFeb6PaQLVEJk7cwaNhmau5OeNNI5ki/qVn7gGgyPamsks4NIA BeDAmALWyyo=M5UN -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce . Description: Red Hat Advanced Cluster Management for Kubernetes 2.1.12 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/2.1/html/release_notes/ Security fixes: * 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: Denial of service via Redis Standard Protocol (RESP) request (CVE-2021-32675) * redis: Out of bounds read in lua debugger protocol parser (CVE-2021-32672) For more details about the security issues, including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Container updates: * RHACM 2.1.12 images (BZ# 2007489) 3. Solution: Before applying this update, make sure all previously released errata relevant to your system have been applied. To apply this upgrade, you must upgrade your OpenShift Container Platform version to 4.6, or later. Bugs fixed (https://bugzilla.redhat.com/): 2007489 - RHACM 2.1.12 images 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 5. (CVE-2021-41073) It was discovered that the Linux kernel did not properly enforce certain types of entries in the Secure Boot Forbidden Signature Database (aka dbx) protection mechanism. An attacker could use this to bypass UEFI Secure Boot restrictions. 7.4) - x86_64 3. Bug Fix(es): * [CKI kernel builds]: x86 binaries in non-x86 kernel rpms breaks systemtap [7.9.z] (BZ#1975161) 4

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

local

TYPE

buffer error

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Red Hat

SOURCES

LAST UPDATE DATE

2025-02-20T20:45:29.185000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE