Headline

RHSA-2022:0629: Red Hat Security Advisory: kernel-rt security and bug fix update

An update for kernel-rt is now available for Red Hat Enterprise Linux 8.2 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.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

Related CVEs:

CVE-2021-0920: kernel: Use After Free in unix_gc() which could result in a local privilege escalation
CVE-2021-4028: kernel: use-after-free in RDMA listen()
CVE-2021-4155: kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL

3 years ago

Red Hat Security Data

Open in Source

#vulnerability #web #linux #red_hat #nodejs #js #java #kubernetes

Skip to navigation Skip to main content

Utilities

Subscriptions
Downloads
Containers
Support Cases

Red Hat Customer Portal

Infrastructure and Management

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

Red Hat OpenShift
Red Hat CloudForms
Red Hat OpenStack Platform
Red Hat OpenShift Container Platform
Red Hat OpenShift Data Science
Red Hat OpenShift Online
Red Hat OpenShift Dedicated
Red Hat Advanced Cluster Security for Kubernetes
Red Hat Advanced Cluster Management for Kubernetes
Red Hat Quay
Red Hat CodeReady Workspaces
Red Hat OpenShift Service on AWS

Storage

Red Hat Gluster Storage
Red Hat Hyperconverged Infrastructure
Red Hat Ceph Storage
Red Hat OpenShift Data Foundation

Runtimes

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

Red Hat Process Automation
Red Hat Process Automation Manager
Red Hat Decision Manager

All Products

Issued:

2022-02-22

Updated:

2022-02-22

RHSA-2022:0629 - Security Advisory

Overview
Updated Packages

Synopsis

Important: kernel-rt security and bug fix update

Type/Severity

Security Advisory: Important

Red Hat Insights patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 8.2 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.

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 unix_gc() which could result in a local privilege escalation (CVE-2021-0920)
kernel: use-after-free in RDMA listen() (CVE-2021-4028)
kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL (CVE-2021-4155)

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):

kernnel-rt-debug: do not call blocking ops when !TASK_RUNNING; state=1 set at [<0000000050e86018>] handle_userfault+0x530/0x1820 (BZ#2029420)
kernel-rt: update RT source tree to the latest RHEL-8.2.z15 Batch (BZ#2046275)

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 - Telecommunications Update Service 8.2 x86_64
Red Hat Enterprise Linux for Real Time for NFV - Telecommunications Update Service 8.2 x86_64

Fixes

BZ - 2027201 - CVE-2021-4028 kernel: use-after-free in RDMA listen()
BZ - 2031930 - CVE-2021-0920 kernel: Use After Free in unix_gc() which could result in a local privilege escalation
BZ - 2034813 - CVE-2021-4155 kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL

Red Hat Enterprise Linux for Real Time - Telecommunications Update Service 8.2

SRPM

kernel-rt-4.18.0-193.75.1.rt13.125.el8_2.src.rpm

SHA-256: 07c10d642dfc17539400710d29333fb0749b8668e88a66884a1da26b7e3e5ca0

x86_64

kernel-rt-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm

SHA-256: 4c64f8cb2d9ca5bbd395f87d2b438f4ff96b91a28af4c516b290f27455d57e01

kernel-rt-core-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm

SHA-256: 183546757deb973e85f946406213fa8f210ce92760d070bf414426a041c7371a

kernel-rt-debug-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm

SHA-256: f4db7e06c8abf764fa74336533400252fee652c60f40da58c0cffacf9e2b22f8

kernel-rt-debug-core-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm

SHA-256: 8458ca5254f6c381645eee451ab0238ce3476c5562d360b4f7b4acb0f2fbd6f6

kernel-rt-debug-debuginfo-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm

SHA-256: 2c021172c038715e632bb4395123d5472957a25ece9f024776037cafcdd6065f

kernel-rt-debug-devel-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm

SHA-256: f5e96066a47d3ce231252db99a0d7b53f03db0948f3c58900970f7260269c770

kernel-rt-debug-modules-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm

SHA-256: ddc2dfada7cb5116178ff173d0e9432c47db6d0beaf304dd4400f3778207809d

kernel-rt-debug-modules-extra-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm

SHA-256: 06cea9917920f952526400490147556a30eb837a1137ffd912194145c4d7a3cc

kernel-rt-debuginfo-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm

SHA-256: ec41f017c67e245c344d381ba786ca9d15d0c362e004f01b8cf48a6e3a759fc1

kernel-rt-debuginfo-common-x86_64-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm

SHA-256: 7818f437fe1bf7ffbd823c6502908153955e4827b22e4e2bfe0e2a46b05314aa

kernel-rt-devel-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm

SHA-256: 2d1328bfa9a01e737e18a354b498e4576505440040931f7f918a9198bb672ea0

kernel-rt-modules-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm

SHA-256: e62d7a7c2e29e03c7c9899650d350164e82f203d8deee3d064d9c3fc2e1816b2

kernel-rt-modules-extra-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm

SHA-256: d630d9b43bd6307ae8b670d132b1585ac43207eec30b5dbb4e849475c1ec1ee9

Red Hat Enterprise Linux for Real Time for NFV - Telecommunications Update Service 8.2