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Red Hat 8 kpatch-patch Urgent Security Update for RHSA-2023:5221-01

red hat
Calendar Grey September 19, 2023
Dist Redhat Esm H88
The newest update for kpatch on RHEL has now been launched. Classified as Critical regarding security issues, this patch resolves significant flaws.
An update for kpatch-patch 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

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: ipvlan: out-of-bounds write caused by unclear skb->cb (CVE-2023-3090)
* 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: cls_fw component can be exploited as result of failure in tcf_change_indev function (CVE-2023-3776)
* kernel: netfilter: use-after-free due to improper element removal in nft_pipapo_remove() (CVE-2023-4004)
* kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval() (CVE-2023-35001)
* 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 update Red Hat kernel patch important threat management

References

https://access.redhat.com/security/cve/CVE-2023-3090 https://access.redhat.com/security/cve/CVE-2023-3390 https://access.redhat.com/security/cve/CVE-2023-3776 https://access.redhat.com/security/cve/CVE-2023-4004 https://access.redhat.com/security/cve/CVE-2023-35001 https://access.redhat.com/security/cve/CVE-2023-35788 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux BaseOS (v. 8):
Source: kpatch-patch-4_18_0-477_10_1-1-3.el8_8.src.rpm kpatch-patch-4_18_0-477_13_1-1-2.el8_8.src.rpm kpatch-patch-4_18_0-477_15_1-1-2.el8_8.src.rpm kpatch-patch-4_18_0-477_21_1-1-1.el8_8.src.rpm
ppc64le: kpatch-patch-4_18_0-477_10_1-1-3.el8_8.ppc64le.rpm kpatch-patch-4_18_0-477_10_1-debuginfo-1-3.el8_8.ppc64le.rpm kpatch-patch-4_18_0-477_10_1-debugsource-1-3.el8_8.ppc64le.rpm kpatch-patch-4_18_0-477_13_1-1-2.el8_8.ppc64le.rpm kpatch-patch-4_18_0-477_13_1-debuginfo-1-2.el8_8.ppc64le.rpm kpatch-patch-4_18_0-477_13_1-debugsource-1-2.el8_8.ppc64le.rpm kpatch-patch-4_18_0-477_15_1-1-2.el8_8.ppc64le.rpm kpatch-patch-4_18_0-477_15_1-debuginfo-1-2.el8_8.ppc64le.rpm kpatch-patch-4_18_0-477_15_1-debugsource-1-2.el8_8.ppc64le.rpm kpatch-patch-4_18_0-477_21_1-1-1.el8_8.ppc64le.rpm kpatch-patch-4_18_0-477_21_1-debuginfo-1-1.el8_8.ppc64le.rpm kpatch-patch-4_18_0-477_21_1-debugsource-1-1.el8_8.ppc64le.rpm
x86_64: kpatch-patch-4_18_0-477_10_1-1-3.el8_8.x86_64.rpm kpatch-patch-4_18_0-477_10_1-debuginfo-1-3.el8_8.x86_64.rpm kpatch-patch-4_18_0-477_10_1-debugsource-1-3.el8_8.x86_64.rpm kpatch-patch-4_18_0-477_13_1-1-2.el8_8.x86_64.rpm kpatch-patch-4_18_0-477_13_1-debuginfo-1-2.el8_8.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:5221-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:5221
Issue date: 2023-09-19

Topic

An update for kpatch-patch 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 security update Red Hat kernel patch important threat management

Relevant Releases Architectures

Red Hat Enterprise Linux BaseOS (v. 8) - 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

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

2218672 - CVE-2023-3090 kernel: ipvlan: out-of-bounds write caused by unclear skb->cb

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

2225097 - CVE-2023-3776 kernel: net/sched: cls_fw component can be exploited as result of failure in tcf_change_indev function

2225275 - CVE-2023-4004 kernel: netfilter: use-after-free due to improper element removal in nft_pipapo_remove()

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