RedHat: RHSA-2022-5214:01 Important: kpatch-patch security update
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: Small table perturb size in the TCP source port generation
algorithm can lead to information leak (CVE-2022-1012)
* kernel: a use-after-free write in the netfilter subsystem can lead to
privilege escalation to root (CVE-2022-1966)
* kernel: buffer overflow in IPsec ESP transformation code (CVE-2022-27666)
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.
Summary
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
References
https://access.redhat.com/security/cve/CVE-2022-1012 https://access.redhat.com/security/cve/CVE-2022-1966 https://access.redhat.com/security/cve/CVE-2022-27666 https://access.redhat.com/security/updates/classification/#important
Package List
Red Hat Enterprise Linux BaseOS (v. 9):
Source:
kpatch-patch-5_14_0-70_13_1-1-1.el9_0.src.rpm
ppc64le:
kpatch-patch-5_14_0-70_13_1-1-1.el9_0.ppc64le.rpm
kpatch-patch-5_14_0-70_13_1-debuginfo-1-1.el9_0.ppc64le.rpm
kpatch-patch-5_14_0-70_13_1-debugsource-1-1.el9_0.ppc64le.rpm
x86_64:
kpatch-patch-5_14_0-70_13_1-1-1.el9_0.x86_64.rpm
kpatch-patch-5_14_0-70_13_1-debuginfo-1-1.el9_0.x86_64.rpm
kpatch-patch-5_14_0-70_13_1-debugsource-1-1.el9_0.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
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.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux BaseOS (v. 9) - ppc64le, x86_64
Bugs Fixed
2061633 - CVE-2022-27666 kernel: buffer overflow in IPsec ESP transformation code
2064604 - CVE-2022-1012 kernel: Small table perturb size in the TCP source port generation algorithm can lead to information leak
2092427 - CVE-2022-1966 kernel: a use-after-free write in the netfilter subsystem can lead to privilege escalation to root
