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CVE-2021-22555

Status Candidate

Overview

A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c. This allows an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space

Related Files

Red Hat Security Advisory 2021-3812-01
Posted Oct 12, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3812-01 - 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-2021-3653, CVE-2021-3656, CVE-2021-37576
MD5 | db2dba965a54dbae9da73ba72c6ba2a6
Red Hat Security Advisory 2021-3814-01
Posted Oct 12, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3814-01 - 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-2021-37576
MD5 | 07e383b11568592564ef5a4054e25ab3
Netfilter x_tables Heap Out-Of-Bounds Write / Privilege Escalation
Posted Oct 7, 2021
Authored by Brendan Coles, Andy Nguyen, Szymon Janusz | Site metasploit.com

A heap out-of-bounds write affecting Linux since version 2.6.19-rc1 was discovered in net/netfilter/x_tables.c. This allows an attacker to gain privileges or cause a denial of service (via heap memory corruption) through user name space. Kernels up to and including 5.11 are vulnerable.

tags | exploit, denial of service, kernel
systems | linux
advisories | CVE-2021-22555
MD5 | 3c40cc9dfa13bbdcb5e222fd6d854f8a
Red Hat Security Advisory 2021-3725-01
Posted Oct 5, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3725-01 - 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, CVE-2021-37576
MD5 | 5f525caea80c8f4ccd8a4930be513069
Red Hat Security Advisory 2021-3653-01
Posted Sep 24, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3653-01 - Red Hat Advanced Cluster Management 2.1.11 security fix and container updates are available.

tags | advisory
systems | linux, redhat
advisories | CVE-2020-27777, CVE-2021-22555, CVE-2021-22922, CVE-2021-22923, CVE-2021-22924, CVE-2021-23017, CVE-2021-29154, CVE-2021-29650, CVE-2021-31535, CVE-2021-32399, CVE-2021-36222, CVE-2021-3653, CVE-2021-37750
MD5 | ef43f11cebe0cd0e7f13da5997e4271e
Red Hat Security Advisory 2021-3598-01
Posted Sep 21, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3598-01 - OpenShift Virtualization is Red Hat's virtualization solution designed for Red Hat OpenShift Container Platform.

tags | advisory
systems | linux, redhat
advisories | CVE-2021-22543, CVE-2021-22555, CVE-2021-27218, CVE-2021-33195, CVE-2021-33197, CVE-2021-33198, CVE-2021-34558, CVE-2021-3609, CVE-2021-37576, CVE-2021-38201, CVE-2021-38575
MD5 | 808e80d3a87efc6104e88e2d2359ade3
Kernel Live Patch Security Notice LSN-0081-1
Posted Sep 14, 2021
Authored by Benjamin M. Romer

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. 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. Various other vulnerabilities were also addressed.

tags | advisory, kernel, vulnerability
systems | linux
advisories | CVE-2021-22555, CVE-2021-33909, CVE-2021-3653, CVE-2021-3656
MD5 | 466908f10276ab3196dea532b09d7715
Red Hat Security Advisory 2021-3522-01
Posted Sep 14, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3522-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include out of bounds write and use-after-free vulnerabilities.

tags | advisory, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2020-8648, CVE-2021-22555, CVE-2021-32399, CVE-2021-3347
MD5 | b86026715e0b9f10acbf968e940ef336
Red Hat Security Advisory 2021-3523-01
Posted Sep 14, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3523-01 - 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 out of bounds write and use-after-free vulnerabilities.

tags | advisory, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2021-22555, CVE-2021-32399, CVE-2021-3347
MD5 | ca98949ca8a78989b1ae6533ebae6ca1
Red Hat Security Advisory 2021-3477-01
Posted Sep 9, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3477-01 - The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host. 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 code execution, out of bounds write, and use-after-free vulnerabilities.

tags | advisory, vulnerability, code execution
systems | linux, redhat
advisories | CVE-2021-22555, CVE-2021-31535, CVE-2021-32399, CVE-2021-3621, CVE-2021-3715
MD5 | dcab14b11a44c1cc2df4cb20d8897f18
Red Hat Security Advisory 2021-3454-01
Posted Sep 8, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3454-01 - Red Hat Advanced Cluster Management for Kubernetes 2.3.2 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. This advisory contains the container images for Red Hat Advanced Cluster Management for Kubernetes, which fix several bugs and security issues.

tags | advisory
systems | linux, redhat
advisories | CVE-2019-20149, CVE-2020-27777, CVE-2021-22543, CVE-2021-22555, CVE-2021-27218, CVE-2021-29154, CVE-2021-29650, CVE-2021-31535, CVE-2021-32399, CVE-2021-33195, CVE-2021-33197, CVE-2021-33198, CVE-2021-34558, CVE-2021-3609
MD5 | 9fe56b076bba5afdd4b2766eaf38b13f
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
MD5 | 0890c1c46311a3a86596bf0d3daa507b
Red Hat Security Advisory 2021-3399-01
Posted Sep 1, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3399-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include out of bounds write and use-after-free vulnerabilities.

tags | advisory, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2021-22555, CVE-2021-32399, CVE-2021-3347
MD5 | 6368c6ca2993cb95fa15a77eec306bf1
Red Hat Security Advisory 2021-3381-01
Posted Aug 31, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3381-01 - 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 an out of bounds write vulnerability.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2021-22555, CVE-2021-32399
MD5 | 476033549f8112d173a920b233582b1c
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
MD5 | 0a672c0dcfb608d57a43630a6a7a3152
Red Hat Security Advisory 2021-3327-01
Posted Aug 31, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3327-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include denial of service, out of bounds write, and privilege escalation vulnerabilities.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2020-27777, CVE-2021-22555, CVE-2021-29154, CVE-2021-29650, CVE-2021-32399
MD5 | 492c0820f1ea8aca21b5d7f7d0f8bbb3
Red Hat Security Advisory 2021-3328-01
Posted Aug 31, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3328-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include denial of service, out of bounds write, and privilege escalation vulnerabilities.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2021-22555, CVE-2021-29154, CVE-2021-29650, CVE-2021-32399
MD5 | 3c2f065712729fdd928b966fe35e35f3
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
MD5 | 70b727c21f99f275db8ad75aa200dd67
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
MD5 | 46f3f1715dcdcaeb52063be8495537c8
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
MD5 | e40da272fb5c5a49d3bf9b9ae2c47e22
Red Hat Security Advisory 2021-3321-01
Posted Aug 31, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3321-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include an out of bounds write vulnerability.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2021-22555, CVE-2021-32399
MD5 | a54ff3d8f9a7c4337d26b7fcbef475b7
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
MD5 | a0f931b8ffa1b934372d05413683bd39
Kernel Live Patch Security Notice LSN-0080-1
Posted Aug 18, 2021
Authored by Benjamin M. Romer

Andy Nguyen discovered that the netfilter subsystem in the Linux kernel contained an out-of-bounds write in its setsockopt() implementation. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux
advisories | CVE-2021-22555
MD5 | 64f38c99f5a469a5fc23403332deaa12
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
MD5 | bcc3ad40fdfcdd098305cdf552cce237
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
MD5 | d28275ff2bf64190a642682caa853d26
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