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Red Hat: RHSA-2022-5249-01 Important: Kernel Privilege Escalation Threat

red hat
Calendar Grey July 1, 2022
Dist Redhat Esm H88
Kernel integrity enhancement and issue resolution patch for Red Hat Enterprise Linux 9, addressing essential security flaws and providing remedial measures.
An update for kernel 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

The system must be rebooted for this update to take effect.

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* kernel: Small table perturb size in the TCP source port generation algorithm can lead to information leak (CVE-2022-1012)
* kernel: race condition in perf_event_open leads to privilege escalation (CVE-2022-1729)
* 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.
Bug Fix(es):
* make SHA512_arch algos and CRYPTO_USER built-ins (BZ#2072643)
* SR-IOV performance > 50% degradation (BZ#2074830)
* fix data corruption caused by dm-integrity (BZ#2082187)
* SCTP client-side peeloff issues [rhel-9] (BZ#2084044)
* TCP connection fails in a asymmetric routing situation (BZ#2085480)
* Fails to boot Multiple RT VMs each with multiple vCPUs (BZ#2086963)
* spec: Fix separate tools build (BZ#2090852)
* call traces related to eeh_pseries observed and vmcore is not captured, when kdump is triggered (BZ#2092255)
* Mark ThunderX NIC driver as unmaintained (BZ#2092638)

Topics%20covered

Topics Covered

security advisory security update Red Hat privilege escalation bug fix kernel Important

References

https://access.redhat.com/security/cve/CVE-2022-1012 https://access.redhat.com/security/cve/CVE-2022-1729 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 AppStream (v. 9):
aarch64: bpftool-debuginfo-5.14.0-70.17.1.el9_0.aarch64.rpm kernel-debug-debuginfo-5.14.0-70.17.1.el9_0.aarch64.rpm kernel-debug-devel-5.14.0-70.17.1.el9_0.aarch64.rpm kernel-debug-devel-matched-5.14.0-70.17.1.el9_0.aarch64.rpm kernel-debuginfo-5.14.0-70.17.1.el9_0.aarch64.rpm kernel-debuginfo-common-aarch64-5.14.0-70.17.1.el9_0.aarch64.rpm kernel-devel-5.14.0-70.17.1.el9_0.aarch64.rpm kernel-devel-matched-5.14.0-70.17.1.el9_0.aarch64.rpm kernel-headers-5.14.0-70.17.1.el9_0.aarch64.rpm kernel-tools-debuginfo-5.14.0-70.17.1.el9_0.aarch64.rpm perf-5.14.0-70.17.1.el9_0.aarch64.rpm perf-debuginfo-5.14.0-70.17.1.el9_0.aarch64.rpm python3-perf-debuginfo-5.14.0-70.17.1.el9_0.aarch64.rpm
noarch: kernel-doc-5.14.0-70.17.1.el9_0.noarch.rpm
ppc64le: bpftool-debuginfo-5.14.0-70.17.1.el9_0.ppc64le.rpm kernel-debug-debuginfo-5.14.0-70.17.1.el9_0.ppc64le.rpm kernel-debug-devel-5.14.0-70.17.1.el9_0.ppc64le.rpm kernel-debug-devel-matched-5.14.0-70.17.1.el9_0.ppc64le.rpm kernel-debuginfo-5.14.0-70.17.1.el9_0.ppc64le.rpm kernel-debuginfo-common-ppc64le-5.14.0-70.17.1.el9_0.ppc64le.rpm kernel-devel-5.14.0-70.17.1.el9_0.ppc64le.rpm kernel-devel-matched-5.14.0-70.17.1.el9_0.ppc64le.rpm kernel-headers-5.14.0-70.17.1.el9_0.ppc64le.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2022:5249-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:5249
Issue date: 2022-06-28

Topic

An update for kernel 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 update Red Hat privilege escalation bug fix kernel Important

Relevant Releases Architectures

Red Hat CodeReady Linux Builder (v. 9) - aarch64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux AppStream (v. 9) - aarch64, noarch, ppc64le, s390x, x86_64

Red Hat Enterprise Linux BaseOS (v. 9) - aarch64, noarch, ppc64le, s390x, 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

2086753 - CVE-2022-1729 kernel: race condition in perf_event_open leads to privilege escalation

2092427 - CVE-2022-1966 kernel: a use-after-free write in the netfilter subsystem can lead to privilege escalation to root

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