Alerts This Week
Warning Icon 1 764
Alerts This Week
Warning Icon 1 764

Red Hat 7.6: RHSA-2023:4696-01 Critical: Kernel Security Fixes

red hat
Calendar Grey August 22, 2023
Dist Redhat Esm H88
Significant kernel security patch released for Red Hat 7.6 to mitigate critical vulnerabilities, encompassing risks like privilege escalation.
An update for kernel is now available for Red Hat Enterprise Linux 7.6 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: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation (CVE-2023-32233)
* hw: amd: Cross-Process Information Leak (CVE-2023-20593)
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 critical privilege escalation security fix Red Hat Enterprise Linux important

References

https://access.redhat.com/security/cve/CVE-2023-20593 https://access.redhat.com/security/cve/CVE-2023-32233 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Server AUS (v. 7.6):
Source: kernel-3.10.0-957.105.1.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-957.105.1.el7.noarch.rpm kernel-doc-3.10.0-957.105.1.el7.noarch.rpm
x86_64: bpftool-3.10.0-957.105.1.el7.x86_64.rpm kernel-3.10.0-957.105.1.el7.x86_64.rpm kernel-debug-3.10.0-957.105.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-957.105.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-957.105.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.105.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.105.1.el7.x86_64.rpm kernel-devel-3.10.0-957.105.1.el7.x86_64.rpm kernel-headers-3.10.0-957.105.1.el7.x86_64.rpm kernel-tools-3.10.0-957.105.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.105.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-957.105.1.el7.x86_64.rpm perf-3.10.0-957.105.1.el7.x86_64.rpm perf-debuginfo-3.10.0-957.105.1.el7.x86_64.rpm python-perf-3.10.0-957.105.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.105.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server Optional AUS (v. 7.6):
x86_64: kernel-debug-debuginfo-3.10.0-957.105.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.105.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.105.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.105.1.el7.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:4696-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:4696
Issue date: 2023-08-22

Topic

An update for kernel is now available for Red Hat Enterprise Linux 7.6Advanced 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 critical privilege escalation security fix Red Hat Enterprise Linux important

Relevant Releases Architectures

Red Hat Enterprise Linux Server AUS (v. 7.6) - noarch, x86_64

Red Hat Enterprise Linux Server Optional AUS (v. 7.6) - 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

2217845 - CVE-2023-20593 hw: amd: Cross-Process Information Leak

Get the latest News and Insights

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

Your message here