Audit Linux privileges now to limit compromise, escalation, and system-wide damage. Review Linux Privileges×

Alerts This Week
Warning Icon 1 431
Alerts This Week
Warning Icon 1 431

RedHat: RHSA-2023:3349-01 Critical: Kernel Privilege Escalation

red hat
Calendar Grey June 3, 2023
Scroller Redhat
The latest kernel upgrade for Red Hat Enterprise Linux 8 tackles critical security vulnerabilities and resolves various bugs. Ensure your systems are protected today!
An update for kernel is now available for Red Hat Enterprise Linux 8

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: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation (CVE-2023-32233)
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):
* The qede driver changes rx-usecs: to 256 causing performance impact (BZ#2176104)
* Intel QAT Update - (kernel changes) (BZ#2176850)
* In FIPS mode, kernel does not transition into error state when RCT or APT health tests fail (BZ#2181730)
* "smpboot: Scheduler frequency invariance went wobbly, disabling!" on nohz_full CPUs after long run (BZ#2188067)

Topics%20covered

Topics Covered

security advisory privilege escalation bug fix Red Hat Enterprise Linux critical patch kernel

References

https://access.redhat.com/security/cve/CVE-2023-32233 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux BaseOS (v. 8):
Source: kernel-4.18.0-477.13.1.el8_8.src.rpm
aarch64: bpftool-4.18.0-477.13.1.el8_8.aarch64.rpm bpftool-debuginfo-4.18.0-477.13.1.el8_8.aarch64.rpm kernel-4.18.0-477.13.1.el8_8.aarch64.rpm kernel-core-4.18.0-477.13.1.el8_8.aarch64.rpm kernel-cross-headers-4.18.0-477.13.1.el8_8.aarch64.rpm kernel-debug-4.18.0-477.13.1.el8_8.aarch64.rpm kernel-debug-core-4.18.0-477.13.1.el8_8.aarch64.rpm kernel-debug-debuginfo-4.18.0-477.13.1.el8_8.aarch64.rpm kernel-debug-devel-4.18.0-477.13.1.el8_8.aarch64.rpm kernel-debug-modules-4.18.0-477.13.1.el8_8.aarch64.rpm kernel-debug-modules-extra-4.18.0-477.13.1.el8_8.aarch64.rpm kernel-debuginfo-4.18.0-477.13.1.el8_8.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-477.13.1.el8_8.aarch64.rpm kernel-devel-4.18.0-477.13.1.el8_8.aarch64.rpm kernel-headers-4.18.0-477.13.1.el8_8.aarch64.rpm kernel-modules-4.18.0-477.13.1.el8_8.aarch64.rpm kernel-modules-extra-4.18.0-477.13.1.el8_8.aarch64.rpm kernel-tools-4.18.0-477.13.1.el8_8.aarch64.rpm kernel-tools-debuginfo-4.18.0-477.13.1.el8_8.aarch64.rpm kernel-tools-libs-4.18.0-477.13.1.el8_8.aarch64.rpm perf-4.18.0-477.13.1.el8_8.aarch64.rpm perf-debuginfo-4.18.0-477.13.1.el8_8.aarch64.rpm python3-perf-4.18.0-477.13.1.el8_8.aarch64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:3349-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:3349
Issue date: 2023-05-30

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.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 privilege escalation bug fix Red Hat Enterprise Linux critical patch kernel

Relevant Releases Architectures

Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64

Red Hat Enterprise Linux CRB (v. 8) - aarch64, ppc64le, x86_64

Bugs Fixed

2196105 - CVE-2023-32233 kernel: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.