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Red Hat Enterprise Linux Update: RHSA-2021-4774-02 Important Kernel Fix

red hat
Calendar Grey November 23, 2021
Dist Redhat Esm H88
Tackling crucial kernel vulnerabilities in Red Hat Enterprise Linux through significant patches. Discover further details within.
An update for kernel is now available for Red Hat Enterprise Linux 7.2 Advanced Update Support

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 packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* kernel: use-after-free in drivers/infiniband/core/ucma.c ctx use-after-free (CVE-2020-36385)
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.

Topics%20covered

Topics Covered

security advisory kernel update software update Red Hat Enterprise Linux security impact important security fix use-after-free

References

https://access.redhat.com/security/cve/CVE-2020-36385 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Server AUS (v. 7.2):
Source: kernel-3.10.0-327.102.1.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-327.102.1.el7.noarch.rpm kernel-doc-3.10.0-327.102.1.el7.noarch.rpm
x86_64: kernel-3.10.0-327.102.1.el7.x86_64.rpm kernel-debug-3.10.0-327.102.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-327.102.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-327.102.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.102.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.102.1.el7.x86_64.rpm kernel-devel-3.10.0-327.102.1.el7.x86_64.rpm kernel-headers-3.10.0-327.102.1.el7.x86_64.rpm kernel-tools-3.10.0-327.102.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.102.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-327.102.1.el7.x86_64.rpm perf-3.10.0-327.102.1.el7.x86_64.rpm perf-debuginfo-3.10.0-327.102.1.el7.x86_64.rpm python-perf-3.10.0-327.102.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-327.102.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server Optional AUS (v. 7.2):
x86_64: kernel-debug-debuginfo-3.10.0-327.102.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.102.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.102.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.102.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-327.102.1.el7.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:4774-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:4774
Issue date: 2021-11-23

Topic

An update for kernel is now available for Red Hat Enterprise Linux 7.2Advanced Update Support.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory kernel update software update Red Hat Enterprise Linux security impact important security fix use-after-free

Relevant Releases Architectures

Red Hat Enterprise Linux Server AUS (v. 7.2) - noarch, x86_64

Red Hat Enterprise Linux Server Optional AUS (v. 7.2) - x86_64

Bugs Fixed

1974319 - CVE-2020-36385 kernel: use-after-free in drivers/infiniband/core/ucma.c ctx use-after-free

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