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Red Hat Enterprise Linux 8.1 RHSA-2023:5235-01 Important Kpatch-Patch DoS

red hat
Calendar Grey September 19, 2023
Dist Redhat Esm H88
A significant security patch is now released for CentOS Linux 8. Complete guidelines are included.
An update for kpatch-patch is now available for Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions

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

Summary

This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel.
Security Fix(es):
* kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests (CVE-2023-3390)
* kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route (CVE-2023-4128)
* kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval() (CVE-2023-35001)
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 DoS security fix Red Hat Enterprise Linux important kpatch-patch

References

https://access.redhat.com/security/cve/CVE-2023-3390 https://access.redhat.com/security/cve/CVE-2023-4128 https://access.redhat.com/security/cve/CVE-2023-35001 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux BaseOS E4S (v. 8.1):
Source: kpatch-patch-4_18_0-147_80_1-1-6.el8_1.src.rpm kpatch-patch-4_18_0-147_81_1-1-5.el8_1.src.rpm kpatch-patch-4_18_0-147_83_1-1-4.el8_1.src.rpm kpatch-patch-4_18_0-147_85_1-1-2.el8_1.src.rpm kpatch-patch-4_18_0-147_87_1-1-1.el8_1.src.rpm
ppc64le: kpatch-patch-4_18_0-147_80_1-1-6.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_80_1-debuginfo-1-6.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_80_1-debugsource-1-6.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_81_1-1-5.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_81_1-debuginfo-1-5.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_81_1-debugsource-1-5.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_83_1-1-4.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_83_1-debuginfo-1-4.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_83_1-debugsource-1-4.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_85_1-1-2.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_85_1-debuginfo-1-2.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_85_1-debugsource-1-2.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_87_1-1-1.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_87_1-debuginfo-1-1.el8_1.ppc64le.rpm kpatch-patch-4_18_0-147_87_1-debugsource-1-1.el8_1.ppc64le.rpm
x86_64: kpatch-patch-4_18_0-147_80_1-1-6.el8_1.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:5235-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:5235
Issue date: 2023-09-19

Topic

An update for kpatch-patch is now available for Red Hat Enterprise Linux8.1 Update Services for SAP Solutions.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 DoS security fix Red Hat Enterprise Linux important kpatch-patch

Relevant Releases Architectures

Red Hat Enterprise Linux BaseOS E4S (v. 8.1) - ppc64le, x86_64

Bugs Fixed

2213260 - CVE-2023-3390 kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests

2220892 - CVE-2023-35001 kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval()

2225511 - CVE-2023-4128 Kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route

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