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Red Hat Enterprise Linux 7: RHSA-2021:3439-01 Moderate: Kernel-Rt Update

red hat
Calendar Grey September 7, 2021
Dist Redhat Esm H88
New kernel-rt package released for Red Hat Enterprise Linux 7, resolving moderate vulnerability and stability concerns.
An update for kernel-rt is now available for Red Hat Enterprise Linux 7

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.

Summary

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 route4_change() in net/sched/cls_route.c (CVE-2021-3715)
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: update to the latest RHEL7.9.z source tree (BZ#1995878)

Topics%20covered

Topics Covered

security advisory security issue kernel update bug fix Red Hat Enterprise Linux moderate impact real time kernel

References

https://access.redhat.com/security/cve/CVE-2021-3715 https://access.redhat.com/security/updates/classification/#moderate

Package List

Red Hat Enterprise Linux for Real Time for NFV (v. 7):
Source: kernel-rt-3.10.0-1160.42.2.rt56.1182.el7.src.rpm
noarch: kernel-rt-doc-3.10.0-1160.42.2.rt56.1182.el7.noarch.rpm
x86_64: kernel-rt-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-debug-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-debug-devel-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-debug-kvm-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-debug-kvm-debuginfo-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-debuginfo-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-devel-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-kvm-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-kvm-debuginfo-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-trace-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-trace-devel-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-trace-kvm-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm kernel-rt-trace-kvm-debuginfo-3.10.0-1160.42.2.rt56.1182.el7.x86_64.rpm
Red Hat Enterprise Linux for Real Time (v. 7):
Source:

Read the Full Advisory


Advisory ID: RHSA-2021:3439-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:3439
Issue date: 2021-09-07

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory security issue kernel update bug fix Red Hat Enterprise Linux moderate impact real time kernel

Relevant Releases Architectures

Red Hat Enterprise Linux for Real Time (v. 7) - noarch, x86_64

Red Hat Enterprise Linux for Real Time for NFV (v. 7) - noarch, x86_64

Bugs Fixed

1993988 - CVE-2021-3715 kernel: use-after-free in route4_change() in net/sched/cls_route.c

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