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CVE-2021-22543

Status Candidate

Overview

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.

Related Files

Red Hat Security Advisory 2021-3262-01
Posted Sep 2, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3262-01 - Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. This advisory contains the container images for Red Hat OpenShift Container Platform 4.7.28.

tags | advisory
systems | linux, redhat
advisories | CVE-2021-22543, CVE-2021-22555, CVE-2021-27218, CVE-2021-3121, CVE-2021-3609
SHA-256 | f37b42defebec364c01fe40a389041ab038a2ebaa9c66663dc7cc5a6686caeaf
Red Hat Security Advisory 2021-3363-01
Posted Aug 31, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3363-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include bypass, out of bounds write, and privilege escalation vulnerabilities.

tags | advisory, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2021-22543, CVE-2021-22555, CVE-2021-32399, CVE-2021-3609
SHA-256 | 1f8f21e611320f4e79e73a3064cf1dab34e3b8f319ead8c25c286bd61668aeb0
Red Hat Security Advisory 2021-3380-01
Posted Aug 31, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3380-01 - 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. Issues addressed include bypass, out of bounds write, and privilege escalation vulnerabilities.

tags | advisory, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2021-22543, CVE-2021-22555, CVE-2021-32399, CVE-2021-3609
SHA-256 | 9161de7815c9e09218556b1e1c9ba84b4482049c547b905f2b2aed15769d346a
Red Hat Security Advisory 2021-3375-01
Posted Aug 31, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3375-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include bypass, out of bounds write, and privilege escalation vulnerabilities.

tags | advisory, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2021-22543, CVE-2021-22555, CVE-2021-32399, CVE-2021-3609
SHA-256 | 3c42c7d7a3330ceecd8088a3c0d1507737c090dc39a9cee63488a3848aae6ae1
Red Hat Security Advisory 2021-3361-01
Posted Aug 31, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3361-01 - The Migration Toolkit for Containers enables you to migrate Kubernetes resources, persistent volume data, and internal container images between OpenShift Container Platform clusters, using the MTC web console or the Kubernetes API. Issues addressed include a memory exhaustion vulnerability.

tags | advisory, web
systems | linux, redhat
advisories | CVE-2021-20271, CVE-2021-21419, CVE-2021-21623, CVE-2021-21639, CVE-2021-21640, CVE-2021-21648, CVE-2021-22543, CVE-2021-22555, CVE-2021-22918, CVE-2021-25735, CVE-2021-25737, CVE-2021-27218, CVE-2021-3114, CVE-2021-3121, CVE-2021-33195, CVE-2021-33196, CVE-2021-33197, CVE-2021-33198, CVE-2021-34558, CVE-2021-3516, CVE-2021-3517, CVE-2021-3518, CVE-2021-3520, CVE-2021-3537, CVE-2021-3541, CVE-2021-3609, CVE-2021-3636
SHA-256 | fa8792e889cba4980e5e69cc42c59e3108310c2072dfb34fffb0c3a8644d9099
Red Hat Security Advisory 2021-3235-01
Posted Aug 28, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3235-01 - The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. Red Hat Virtualization Hosts are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks. Issues addressed include buffer overflow, bypass, code execution, out of bounds write, and privilege escalation vulnerabilities.

tags | advisory, overflow, vulnerability, code execution
systems | linux, redhat
advisories | CVE-2021-22543, CVE-2021-22555, CVE-2021-3609, CVE-2021-3621
SHA-256 | f286c4f6d85e2f33403a2dacd758e8f35f083b2b3b3b066fb546a1d7034c2479
Red Hat Security Advisory 2021-3173-01
Posted Aug 17, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3173-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include bypass and out of bounds write vulnerabilities.

tags | advisory, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2021-22543, CVE-2021-22555, CVE-2021-32399
SHA-256 | 6706e39f297e107f1ff1e1751358e3c5457202daa6e0d94e3fed4e3dad19e2f8
Red Hat Security Advisory 2021-3181-01
Posted Aug 17, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3181-01 - 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. Issues addressed include bypass and out of bounds write vulnerabilities.

tags | advisory, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2021-22543, CVE-2021-22555, CVE-2021-32399
SHA-256 | ebd81c13fdd75aa9a29ef494c70017048d00231cdf540dabb309fbc3d526a9f2
Red Hat Security Advisory 2021-3088-01
Posted Aug 10, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3088-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include bypass, out of bounds write, and privilege escalation vulnerabilities.

tags | advisory, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2021-22543, CVE-2021-22555, CVE-2021-3609
SHA-256 | 89b3cd704447ba81f0b1469b2f11523e90e8a2febc7bbe6eca778f311621ad18
Red Hat Security Advisory 2021-3057-01
Posted Aug 10, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3057-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include bypass, null pointer, out of bounds write, and privilege escalation vulnerabilities.

tags | advisory, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2021-22543, CVE-2021-22555, CVE-2021-3609
SHA-256 | 430fd835d2bdf1ff571ff110fb4f55ba499c9de4d9b0f89a65b0be15a0229e02
Red Hat Security Advisory 2021-3044-01
Posted Aug 10, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3044-01 - 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. Issues addressed include bypass, out of bounds write, and privilege escalation vulnerabilities.

tags | advisory, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2021-22543, CVE-2021-22555, CVE-2021-3609
SHA-256 | ae38cf4d315c5c9028eba6e515a52134f57ccd0722c43a727a4f79112a01520a
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