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Red Hat 9: RHSA-2023:1471-01 Important: Kpatch Patch DoS

red hat
Calendar Grey March 27, 2023
Dist Redhat Esm H88
Critical kpatch-patch security enhancement released for Red Hat Enterprise Linux 9, classified as significant due to its potential security implications.
An update for kpatch-patch is now available for Red Hat Enterprise Linux 9

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: tun: avoid double free in tun_free_netdev (CVE-2022-4744)
* ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF (CVE-2023-0266)
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 DoS Red Hat Enterprise Linux important kernel fix kpatch-patch

References

https://access.redhat.com/security/cve/CVE-2022-4744 https://access.redhat.com/security/cve/CVE-2023-0266 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux BaseOS (v. 9):
Source: kpatch-patch-5_14_0-162_12_1-1-2.el9_1.src.rpm kpatch-patch-5_14_0-162_18_1-1-1.el9_1.src.rpm kpatch-patch-5_14_0-162_6_1-1-3.el9_1.src.rpm
ppc64le: kpatch-patch-5_14_0-162_12_1-1-2.el9_1.ppc64le.rpm kpatch-patch-5_14_0-162_12_1-debuginfo-1-2.el9_1.ppc64le.rpm kpatch-patch-5_14_0-162_12_1-debugsource-1-2.el9_1.ppc64le.rpm kpatch-patch-5_14_0-162_18_1-1-1.el9_1.ppc64le.rpm kpatch-patch-5_14_0-162_18_1-debuginfo-1-1.el9_1.ppc64le.rpm kpatch-patch-5_14_0-162_18_1-debugsource-1-1.el9_1.ppc64le.rpm kpatch-patch-5_14_0-162_6_1-1-3.el9_1.ppc64le.rpm kpatch-patch-5_14_0-162_6_1-debuginfo-1-3.el9_1.ppc64le.rpm kpatch-patch-5_14_0-162_6_1-debugsource-1-3.el9_1.ppc64le.rpm
x86_64: kpatch-patch-5_14_0-162_12_1-1-2.el9_1.x86_64.rpm kpatch-patch-5_14_0-162_12_1-debuginfo-1-2.el9_1.x86_64.rpm kpatch-patch-5_14_0-162_12_1-debugsource-1-2.el9_1.x86_64.rpm kpatch-patch-5_14_0-162_18_1-1-1.el9_1.x86_64.rpm kpatch-patch-5_14_0-162_18_1-debuginfo-1-1.el9_1.x86_64.rpm kpatch-patch-5_14_0-162_18_1-debugsource-1-1.el9_1.x86_64.rpm kpatch-patch-5_14_0-162_6_1-1-3.el9_1.x86_64.rpm kpatch-patch-5_14_0-162_6_1-debuginfo-1-3.el9_1.x86_64.rpm kpatch-patch-5_14_0-162_6_1-debugsource-1-3.el9_1.x86_64.rpm


Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:1471-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:1471
Issue date: 2023-03-27

Topic

An update for kpatch-patch is now available for Red Hat Enterprise Linux 9.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 DoS Red Hat Enterprise Linux important kernel fix kpatch-patch

Relevant Releases Architectures

Red Hat Enterprise Linux BaseOS (v. 9) - ppc64le, x86_64

Bugs Fixed

2156322 - CVE-2022-4744 kernel: tun: avoid double free in tun_free_netdev

2163379 - CVE-2023-0266 ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF

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