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Red Hat Enterprise Linux 8.6 RHSA-2023:4888-01 Important Kpatch-Patch

red hat
Calendar Grey August 31, 2023
Dist Redhat Esm H88
Ubuntu's crucial security upgrade for apparmor addresses various vulnerabilities, bolstering system protection.
An update for kpatch-patch is now available for Red Hat Enterprise Linux 8.6 Extended 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

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: use-after-free in l2cap_connect and l2cap_le_connect_req in net/bluetooth/l2cap_core.c (CVE-2022-42896)
* kernel: Use-after-free vulnerability in the Linux Kernel traffic control index filter (CVE-2023-1829)
* kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests (CVE-2023-3390)
* kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt() (CVE-2023-35788)
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 security issue red hat exploit important linux kernel kpatch-patch

References

https://access.redhat.com/security/cve/CVE-2022-42896 https://access.redhat.com/security/cve/CVE-2023-1829 https://access.redhat.com/security/cve/CVE-2023-3390 https://access.redhat.com/security/cve/CVE-2023-35788 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux BaseOS EUS (v.8.6):
Source: kpatch-patch-4_18_0-372_41_1-1-7.el8_6.src.rpm kpatch-patch-4_18_0-372_46_1-1-5.el8_6.src.rpm kpatch-patch-4_18_0-372_51_1-1-4.el8_6.src.rpm kpatch-patch-4_18_0-372_52_1-1-3.el8_6.src.rpm kpatch-patch-4_18_0-372_57_1-1-2.el8_6.src.rpm kpatch-patch-4_18_0-372_64_1-1-1.el8_6.src.rpm
ppc64le: kpatch-patch-4_18_0-372_41_1-1-7.el8_6.ppc64le.rpm kpatch-patch-4_18_0-372_41_1-debuginfo-1-7.el8_6.ppc64le.rpm kpatch-patch-4_18_0-372_41_1-debugsource-1-7.el8_6.ppc64le.rpm kpatch-patch-4_18_0-372_46_1-1-5.el8_6.ppc64le.rpm kpatch-patch-4_18_0-372_46_1-debuginfo-1-5.el8_6.ppc64le.rpm kpatch-patch-4_18_0-372_46_1-debugsource-1-5.el8_6.ppc64le.rpm kpatch-patch-4_18_0-372_51_1-1-4.el8_6.ppc64le.rpm kpatch-patch-4_18_0-372_51_1-debuginfo-1-4.el8_6.ppc64le.rpm kpatch-patch-4_18_0-372_51_1-debugsource-1-4.el8_6.ppc64le.rpm kpatch-patch-4_18_0-372_52_1-1-3.el8_6.ppc64le.rpm kpatch-patch-4_18_0-372_52_1-debuginfo-1-3.el8_6.ppc64le.rpm kpatch-patch-4_18_0-372_52_1-debugsource-1-3.el8_6.ppc64le.rpm kpatch-patch-4_18_0-372_57_1-1-2.el8_6.ppc64le.rpm kpatch-patch-4_18_0-372_57_1-debuginfo-1-2.el8_6.ppc64le.rpm kpatch-patch-4_18_0-372_57_1-debugsource-1-2.el8_6.ppc64le.rpm kpatch-patch-4_18_0-372_64_1-1-1.el8_6.ppc64le.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:4888-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:4888
Issue date: 2023-08-30

Topic

An update for kpatch-patch is now available for Red Hat Enterprise Linux8.6 Extended 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 security issue red hat exploit important linux kernel kpatch-patch

Relevant Releases Architectures

Red Hat Enterprise Linux BaseOS EUS (v.8.6) - ppc64le, x86_64

Bugs Fixed

2147364 - CVE-2022-42896 kernel: use-after-free in l2cap_connect and l2cap_le_connect_req in net/bluetooth/l2cap_core.c

2188470 - CVE-2023-1829 kernel: Use-after-free vulnerability in the Linux Kernel traffic control index filter

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

2215768 - CVE-2023-35788 kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt()

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