Red Hat Customer Portal

Skip to main content

Main Navigation

  • Products & Services
    • Back
    • View All Products
    • Infrastructure and Management
      • Back
      • Red Hat Enterprise Linux
      • Red Hat Virtualization
      • Red Hat Identity Management
      • Red Hat Directory Server
      • Red Hat Certificate System
      • Red Hat Satellite
      • Red Hat Subscription Management
      • Red Hat Update Infrastructure
      • Red Hat Insights
      • Red Hat Ansible Automation Platform
    • Cloud Computing
      • Back
      • Red Hat CloudForms
      • Red Hat OpenStack Platform
      • Red Hat OpenShift Container Platform
      • Red Hat OpenShift Online
      • Red Hat OpenShift Dedicated
      • Red Hat Advanced Cluster Management for Kubernetes
      • Red Hat Quay
      • Red Hat CodeReady Workspaces
    • Storage
      • Back
      • Red Hat Gluster Storage
      • Red Hat Hyperconverged Infrastructure
      • Red Hat Ceph Storage
      • Red Hat Openshift Container Storage
    • Runtimes
      • Back
      • Red Hat Runtimes
      • Red Hat JBoss Enterprise Application Platform
      • Red Hat Data Grid
      • Red Hat JBoss Web Server
      • Red Hat Single Sign On
      • Red Hat support for Spring Boot
      • Red Hat build of Node.js
      • Red Hat build of Thorntail
      • Red Hat build of Eclipse Vert.x
      • Red Hat build of OpenJDK
      • Red Hat build of Quarkus
      • Red Hat CodeReady Studio
    • Integration and Automation
      • Back
      • Red Hat Integration
      • Red Hat Fuse
      • Red Hat AMQ
      • Red Hat 3scale API Management
      • Red Hat JBoss Data Virtualization
      • Red Hat Process Automation
      • Red Hat Process Automation Manager
      • Red Hat Decision Manager
    • Support
    • Production Support
    • Development Support
    • Product Life Cycles
    • Documentation
    • Red Hat Enterprise Linux
    • Red Hat JBoss Enterprise Application Platform
    • Red Hat OpenStack Platform
    • Red Hat OpenShift Container Platform
    • Services
    • Consulting
    • Technical Account Management
    • Training & Certifications
    • Ecosystem Catalog
    • Partner Resources
    • Red Hat in the Public Cloud
  • Tools
    • Back
    • Red Hat Insights
    • Tools
    • Troubleshoot a product issue
    • Packages
    • Errata
    • Customer Portal Labs
    • Explore Labs
    • Configuration
    • Deployment
    • Security
    • Troubleshooting
  • Security
    • Back
    • Product Security Center
    • Security Updates
    • Security Advisories
    • Red Hat CVE Database
    • Security Labs
    • Resources
    • Overview
    • Security Blog
    • Security Measurement
    • Severity Ratings
    • Backporting Policies
    • Product Signing (GPG) Keys
  • Community
    • Back
    • Customer Portal Community
    • Discussions
    • Blogs
    • Private Groups
    • Community Activity
    • Customer Events
    • Red Hat Convergence
    • Red Hat Summit
    • Stories
    • Red Hat Subscription Value
    • You Asked. We Acted.
    • Open Source Communities
  • Subscriptions
  • Downloads
  • Containers
  • Support Cases
  • Account
    • Back
    • Log In
    • Register
    • Red Hat Account Number:
    • Account Details
    • User Management
    • Account Maintenance
    • My Profile
    • Notifications
    • Help
    • Log Out
  • Language
    • Back
    • English
    • 한국어
    • 日本語
    • 中文 (中国)
Red Hat Customer Portal
  • Products & Services
    • Back
    • View All Products
    • Infrastructure and Management
      • Back
      • Red Hat Enterprise Linux
      • Red Hat Virtualization
      • Red Hat Identity Management
      • Red Hat Directory Server
      • Red Hat Certificate System
      • Red Hat Satellite
      • Red Hat Subscription Management
      • Red Hat Update Infrastructure
      • Red Hat Insights
      • Red Hat Ansible Automation Platform
    • Cloud Computing
      • Back
      • Red Hat CloudForms
      • Red Hat OpenStack Platform
      • Red Hat OpenShift Container Platform
      • Red Hat OpenShift Online
      • Red Hat OpenShift Dedicated
      • Red Hat Advanced Cluster Management for Kubernetes
      • Red Hat Quay
      • Red Hat CodeReady Workspaces
    • Storage
      • Back
      • Red Hat Gluster Storage
      • Red Hat Hyperconverged Infrastructure
      • Red Hat Ceph Storage
      • Red Hat Openshift Container Storage
    • Runtimes
      • Back
      • Red Hat Runtimes
      • Red Hat JBoss Enterprise Application Platform
      • Red Hat Data Grid
      • Red Hat JBoss Web Server
      • Red Hat Single Sign On
      • Red Hat support for Spring Boot
      • Red Hat build of Node.js
      • Red Hat build of Thorntail
      • Red Hat build of Eclipse Vert.x
      • Red Hat build of OpenJDK
      • Red Hat build of Quarkus
      • Red Hat CodeReady Studio
    • Integration and Automation
      • Back
      • Red Hat Integration
      • Red Hat Fuse
      • Red Hat AMQ
      • Red Hat 3scale API Management
      • Red Hat JBoss Data Virtualization
      • Red Hat Process Automation
      • Red Hat Process Automation Manager
      • Red Hat Decision Manager
    • Support
    • Production Support
    • Development Support
    • Product Life Cycles
    • Documentation
    • Red Hat Enterprise Linux
    • Red Hat JBoss Enterprise Application Platform
    • Red Hat OpenStack Platform
    • Red Hat OpenShift Container Platform
    • Services
    • Consulting
    • Technical Account Management
    • Training & Certifications
    • Ecosystem Catalog
    • Partner Resources
    • Red Hat in the Public Cloud
  • Tools
    • Back
    • Red Hat Insights
    • Tools
    • Troubleshoot a product issue
    • Packages
    • Errata
    • Customer Portal Labs
    • Explore Labs
    • Configuration
    • Deployment
    • Security
    • Troubleshooting
  • Security
    • Back
    • Product Security Center
    • Security Updates
    • Security Advisories
    • Red Hat CVE Database
    • Security Labs
    • Resources
    • Overview
    • Security Blog
    • Security Measurement
    • Severity Ratings
    • Backporting Policies
    • Product Signing (GPG) Keys
  • Community
    • Back
    • Customer Portal Community
    • Discussions
    • Blogs
    • Private Groups
    • Community Activity
    • Customer Events
    • Red Hat Convergence
    • Red Hat Summit
    • Stories
    • Red Hat Subscription Value
    • You Asked. We Acted.
    • Open Source Communities
  • Subscriptions
  • Downloads
  • Containers
  • Support Cases
  • Account
    • Back
    • Log In
    • Register
    • Red Hat Account Number:
    • Account Details
    • User Management
    • Account Maintenance
    • My Profile
    • Notifications
    • Help
    • Log Out
  • Language
    • Back
    • English
    • 한국어
    • 日本語
    • 中文 (中国)
  • Subscriptions
  • Downloads
  • Containers
  • Support Cases
  • Search
  • Log In
  • Language
Or troubleshoot an issue.

Log in to Your Red Hat Account

Log In

Your Red Hat account gives you access to your profile, preferences, and services, depending on your status.

Register

If you are a new customer, register now for access to product evaluations and purchasing capabilities.

Need access to an account?

If your company has an existing Red Hat account, your organization administrator can grant you access.

If you have any questions, please contact customer service.

Red Hat Account Number:

Red Hat Account

  • Account Details
  • User Management
  • Account Maintenance
  • Account Team

Customer Portal

  • My Profile
  • Notifications
  • Help

For your security, if you’re on a public computer and have finished using your Red Hat services, please be sure to log out.

Log Out

Select Your Language

  • English
  • 한국어
  • 日本語
  • 中文 (中国)
Red Hat Customer Portal Red Hat Customer Portal
  • Products & Services
  • Tools
  • Security
  • Community
  • Infrastructure and Management

  • Cloud Computing

  • Storage

  • Runtimes

  • Integration and Automation

  • Red Hat Enterprise Linux
  • Red Hat Virtualization
  • Red Hat Identity Management
  • Red Hat Directory Server
  • Red Hat Certificate System
  • Red Hat Satellite
  • Red Hat Subscription Management
  • Red Hat Update Infrastructure
  • Red Hat Insights
  • Red Hat Ansible Automation Platform
  • Red Hat CloudForms
  • Red Hat OpenStack Platform
  • Red Hat OpenShift Container Platform
  • Red Hat OpenShift Online
  • Red Hat OpenShift Dedicated
  • Red Hat Advanced Cluster Management for Kubernetes
  • Red Hat Quay
  • Red Hat CodeReady Workspaces
  • Red Hat OpenShift Service on AWS
  • Red Hat Gluster Storage
  • Red Hat Hyperconverged Infrastructure
  • Red Hat Ceph Storage
  • Red Hat Openshift Container Storage
  • Red Hat Runtimes
  • Red Hat JBoss Enterprise Application Platform
  • Red Hat Data Grid
  • Red Hat JBoss Web Server
  • Red Hat Single Sign On
  • Red Hat support for Spring Boot
  • Red Hat build of Node.js
  • Red Hat build of Thorntail
  • Red Hat build of Eclipse Vert.x
  • Red Hat build of OpenJDK
  • Red Hat build of Quarkus
  • Red Hat CodeReady Studio
  • Red Hat Integration
  • Red Hat Fuse
  • Red Hat AMQ
  • Red Hat 3scale API Management
  • Red Hat JBoss Data Virtualization
  • Red Hat Process Automation
  • Red Hat Process Automation Manager
  • Red Hat Decision Manager
View All Products
  • Support
  • Production Support
  • Development Support
  • Product Life Cycles

Services

  • Consulting
  • Technical Account Management
  • Training & Certifications
  • Documentation
  • Red Hat Enterprise Linux
  • Red Hat JBoss Enterprise Application Platform
  • Red Hat OpenStack Platform
  • Red Hat OpenShift Container Platform
  • Ecosystem Catalog
  • Red Hat in the Public Cloud
  • Partner Resources

Tools

  • Troubleshoot a product issue
  • Packages
  • Errata
  • Customer Portal Labs
  • Configuration
  • Deployment
  • Security
  • Troubleshooting

Red Hat Insights

Increase visibility into IT operations to detect and resolve technical issues before they impact your business.

  • Learn more
  • Go to Insights

Red Hat Product Security Center

Engage with our Red Hat Product Security team, access security updates, and ensure your environments are not exposed to any known security vulnerabilities.

Product Security Center

Security Updates

  • Security Advisories
  • Red Hat CVE Database
  • Security Labs

Keep your systems secure with Red Hat's specialized responses to security vulnerabilities.

  • View Responses

Resources

  • Overview
  • Security Blog
  • Security Measurement
  • Severity Ratings
  • Backporting Policies
  • Product Signing (GPG) Keys

Customer Portal Community

  • Discussions
  • Blogs
  • Private Groups
  • Community Activity

Customer Events

  • Red Hat Convergence
  • Red Hat Summit

Stories

  • Red Hat Subscription Value
  • You Asked. We Acted.
  • Open Source Communities
Red Hat Product Errata RHSA-2021:1081 - Security Advisory
Issued:
2021-04-06
Updated:
2021-04-06

RHSA-2021:1081 - Security Advisory

  • Overview
  • Updated Packages

Synopsis

Important: kernel-rt security and bug fix update

Type/Severity

Security Advisory: Important

Topic

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.

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: use after free in eventpoll.c may lead to escalation of privilege (CVE-2020-0466)
  • kernel: SCSI target (LIO) write to any block on ILO backstore (CVE-2020-28374)
  • kernel: Use after free via PI futex state (CVE-2021-3347)
  • kernel: race conditions caused by wrong locking in net/vmw_vsock/af_vsock.c (CVE-2021-26708)
  • kernel: out-of-bounds read in libiscsi module (CVE-2021-27364)
  • kernel: heap buffer overflow in the iSCSI subsystem (CVE-2021-27365)
  • Kernel: KVM: host stack overflow due to lazy update IOAPIC (CVE-2020-27152)
  • kernel: iscsi: unrestricted access to sessions and handles (CVE-2021-27363)

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 possible livelock: WARNING: CPU: 28 PID: 3109 at kernel/ptrace.c:242 ptrace_check_attach+0xdd/0x1a0 (BZ#1925308)
  • kernel-rt: update RT source tree to the RHEL-8.3.z3 source tree (BZ#1926369)

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.

Affected Products

  • Red Hat Enterprise Linux for Real Time 8 x86_64
  • Red Hat Enterprise Linux for Real Time for NFV 8 x86_64

Fixes

  • BZ - 1888886 - CVE-2020-27152 Kernel: KVM: host stack overflow due to lazy update IOAPIC
  • BZ - 1899804 - CVE-2020-28374 kernel: SCSI target (LIO) write to any block on ILO backstore
  • BZ - 1920480 - CVE-2020-0466 kernel: use after free in eventpoll.c may lead to escalation of privilege
  • BZ - 1922249 - CVE-2021-3347 kernel: Use after free via PI futex state
  • BZ - 1925588 - CVE-2021-26708 kernel: race conditions caused by wrong locking in net/vmw_vsock/af_vsock.c
  • BZ - 1926369 - kernel-rt: update RT source tree to the RHEL-8.3.z3 source tree
  • BZ - 1930078 - CVE-2021-27365 kernel: heap buffer overflow in the iSCSI subsystem
  • BZ - 1930079 - CVE-2021-27363 kernel: iscsi: unrestricted access to sessions and handles
  • BZ - 1930080 - CVE-2021-27364 kernel: out-of-bounds read in libiscsi module

CVEs

  • CVE-2020-0466
  • CVE-2020-27152
  • CVE-2020-28374
  • CVE-2021-3347
  • CVE-2021-26708
  • CVE-2021-27363
  • CVE-2021-27364
  • CVE-2021-27365

References

  • https://access.redhat.com/security/updates/classification/#important
  • Note: More recent versions of these packages may be available. Click a package name for more details.

    Red Hat Enterprise Linux for Real Time 8

    SRPM
    kernel-rt-4.18.0-240.22.1.rt7.77.el8_3.src.rpm SHA-256: aaa887687c13340bf964ff02e77d82aeea46c9cdad367a793e836d506eb27e70
    x86_64
    kernel-rt-4.18.0-240.22.1.rt7.77.el8_3.x86_64.rpm SHA-256: 5b038ff42d30667fca54232dc80a73d1929850df4c441d4259ca6e2ad65a1f3b
    kernel-rt-core-4.18.0-240.22.1.rt7.77.el8_3.x86_64.rpm SHA-256: 4027586edf94ed698f34eb309ca9e1f1f21f9b324dff790a466e1f9336c2caa5
    kernel-rt-debug-4.18.0-240.22.1.rt7.77.el8_3.x86_64.rpm SHA-256: c3f0f891cfd1d60ac81aab8f0caad5d65840c2bfe83991778c150b4fefe8bc8a
    kernel-rt-debug-core-4.18.0-240.22.1.rt7.77.el8_3.x86_64.rpm SHA-256: a893e6e2ba0c7ae84dbcc737c2ecae7386e0c6daff8d902c79ff5a1c70eb3ec5
    kernel-rt-debug-debuginfo-4.18.0-240.22.1.rt7.77.el8_3.x86_64.rpm SHA-256: d72de984016cac2b0f69f17c04c329e8d8ac38f1927336ac83444dfac7269e57
    kernel-rt-debug-devel-4.18.0-240.22.1.rt7.77.el8_3.x86_64.rpm SHA-256: 00ea139d9e76e6273e984d1d1e4356da1614e8bda94da83afab220f4d41ca727
    kernel-rt-debug-modules-4.18.0-240.22.1.rt7.77.el8_3.x86_64.rpm SHA-256: 755f01c053eeab6eef0d8683085bd67e3c7b1d11bcb7606ddca47d2a265b6ae1
    kernel-rt-debug-modules-extra-4.18.0-240.22.1.rt7.77.el8_3.x86_64.rpm SHA-256: 53da381182dead32f276b8e6a670709ba037384cc3f4194e7f929f6fe93be010
    kernel-rt-debuginfo-4.18.0-240.22.1.rt7.77.el8_3.x86_64.rpm SHA-256: cb5706603328976311614de18a3ecbf3d497341234438ae36185b047420bd493
    kernel-rt-debuginfo-common-x86_64-4.18.0-240.22.1.rt7.77.el8_3.x86_64.rpm SHA-256: 0edb90dcbb6d556bd04ce10686fb58dbf385a9b308a70e795b9f35a427fc842f
    kernel-rt-devel-4.18.0-240.22.1.rt7.77.el8_3.x86_64.rpm SHA-256: c5f244254d9cd40b7e5fdecdb501a0f7b8b2c8a605482b71f9792da1ed3fc574
    kernel-rt-modules-4.18.0-240.22.1.rt7.77.el8_3.x86_64.rpm SHA-256: 37407bd4ea8a643c73142aa8439dbb295f2f036adc93e32f486fa1289156e3ef
    kernel-rt-modules-extra-4.18.0-240.22.1.rt7.77.el8_3.x86_64.rpm SHA-256: e775ac9d9d26f932162294d2cb2213f10f2098b8c18156dd750418428a1cc447

    Red Hat Enterprise Linux for Real Time for NFV 8

    SRPM
    kernel-rt-4.18.0-240.22.1.rt7.77.el8_3.src.rpm SHA-256: aaa887687c13340bf964ff02e77d82aeea46c9cdad367a793e836d506eb27e70
    x86_64
    kernel-rt-4.18.0-240.22.1.rt7.77.el8_3.x86_64.rpm SHA-256: 5b038ff42d30667fca54232dc80a73d1929850df4c441d4259ca6e2ad65a1f3b
    kernel-rt-core-4.18.0-240.22.1.rt7.77.el8_3.x86_64.rpm SHA-256: 4027586edf94ed698f34eb309ca9e1f1f21f9b324dff790a466e1f9336c2caa5
    kernel-rt-debug-4.18.0-240.22.1.rt7.77.el8_3.x86_64.rpm SHA-256: c3f0f891cfd1d60ac81aab8f0caad5d65840c2bfe83991778c150b4fefe8bc8a
    kernel-rt-debug-core-4.18.0-240.22.1.rt7.77.el8_3.x86_64.rpm SHA-256: a893e6e2ba0c7ae84dbcc737c2ecae7386e0c6daff8d902c79ff5a1c70eb3ec5
    kernel-rt-debug-debuginfo-4.18.0-240.22.1.rt7.77.el8_3.x86_64.rpm SHA-256: d72de984016cac2b0f69f17c04c329e8d8ac38f1927336ac83444dfac7269e57
    kernel-rt-debug-devel-4.18.0-240.22.1.rt7.77.el8_3.x86_64.rpm SHA-256: 00ea139d9e76e6273e984d1d1e4356da1614e8bda94da83afab220f4d41ca727
    kernel-rt-debug-kvm-4.18.0-240.22.1.rt7.77.el8_3.x86_64.rpm SHA-256: a3cfb74b618b397dcd1dabb3072532a2277e8434ece59afb9204203a66c4f786
    kernel-rt-debug-modules-4.18.0-240.22.1.rt7.77.el8_3.x86_64.rpm SHA-256: 755f01c053eeab6eef0d8683085bd67e3c7b1d11bcb7606ddca47d2a265b6ae1
    kernel-rt-debug-modules-extra-4.18.0-240.22.1.rt7.77.el8_3.x86_64.rpm SHA-256: 53da381182dead32f276b8e6a670709ba037384cc3f4194e7f929f6fe93be010
    kernel-rt-debuginfo-4.18.0-240.22.1.rt7.77.el8_3.x86_64.rpm SHA-256: cb5706603328976311614de18a3ecbf3d497341234438ae36185b047420bd493
    kernel-rt-debuginfo-common-x86_64-4.18.0-240.22.1.rt7.77.el8_3.x86_64.rpm SHA-256: 0edb90dcbb6d556bd04ce10686fb58dbf385a9b308a70e795b9f35a427fc842f
    kernel-rt-devel-4.18.0-240.22.1.rt7.77.el8_3.x86_64.rpm SHA-256: c5f244254d9cd40b7e5fdecdb501a0f7b8b2c8a605482b71f9792da1ed3fc574
    kernel-rt-kvm-4.18.0-240.22.1.rt7.77.el8_3.x86_64.rpm SHA-256: 570ae338b1143c8845c98379e76e5ad454fe374c7d8035afca81a0eb0d25a897
    kernel-rt-modules-4.18.0-240.22.1.rt7.77.el8_3.x86_64.rpm SHA-256: 37407bd4ea8a643c73142aa8439dbb295f2f036adc93e32f486fa1289156e3ef
    kernel-rt-modules-extra-4.18.0-240.22.1.rt7.77.el8_3.x86_64.rpm SHA-256: e775ac9d9d26f932162294d2cb2213f10f2098b8c18156dd750418428a1cc447

    The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.

    Red Hat

    Quick Links

    • Downloads
    • Subscriptions
    • Support Cases
    • Customer Service
    • Product Documentation

    Help

    • Contact Us
    • Customer Portal FAQ
    • Log-in Assistance

    Site Info

    • Trust Red Hat
    • Browser Support Policy
    • Accessibility
    • Awards and Recognition
    • Colophon

    Related Sites

    • redhat.com
    • openshift.com
    • developers.redhat.com
    • connect.redhat.com
    • cloud.redhat.com

    About

    • Red Hat Subscription Value
    • About Red Hat
    • Red Hat Jobs
    Copyright © 2021 Red Hat, Inc.
    • Privacy Statement
    • Customer Portal Terms of Use
    • All Policies and Guidelines
    Red Hat Summit
    Twitter Facebook