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Red Hat Security Advisory 2022-5806-01

Red Hat Security Advisory 2022-5806-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include privilege escalation and use-after-free vulnerabilities.

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====================================================================
Red Hat Security Advisory

Synopsis: Important: kernel security update
Advisory ID: RHSA-2022:5806-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:5806
Issue date: 2022-08-02
CVE Names: CVE-2022-1729 CVE-2022-32250
====================================================================

  1. Summary:

An update for kernel is now available for Red Hat Enterprise Linux 7.3
Advanced Update Support.

Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.

  1. Relevant releases/architectures:

Red Hat Enterprise Linux Server AUS (v. 7.3) - noarch, x86_64
Red Hat Enterprise Linux Server Optional AUS (v. 7.3) - x86_64

  1. Description:

The kernel packages contain the Linux kernel, the core of any Linux
operating system.

Security Fix(es):

  • 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-2022-32250)

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.

  1. 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.

  1. Bugs fixed (https://bugzilla.redhat.com/):

2086753 - CVE-2022-1729 kernel: race condition in perf_event_open leads to privilege escalation
2092427 - CVE-2022-32250 kernel: a use-after-free write in the netfilter subsystem can lead to privilege escalation to root

  1. Package List:

Red Hat Enterprise Linux Server AUS (v. 7.3):

Source:
kernel-3.10.0-514.104.1.el7.src.rpm

noarch:
kernel-abi-whitelists-3.10.0-514.104.1.el7.noarch.rpm
kernel-doc-3.10.0-514.104.1.el7.noarch.rpm

x86_64:
kernel-3.10.0-514.104.1.el7.x86_64.rpm
kernel-debug-3.10.0-514.104.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-514.104.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-514.104.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-514.104.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-514.104.1.el7.x86_64.rpm
kernel-devel-3.10.0-514.104.1.el7.x86_64.rpm
kernel-headers-3.10.0-514.104.1.el7.x86_64.rpm
kernel-tools-3.10.0-514.104.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-514.104.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-514.104.1.el7.x86_64.rpm
perf-3.10.0-514.104.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-514.104.1.el7.x86_64.rpm
python-perf-3.10.0-514.104.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-514.104.1.el7.x86_64.rpm

Red Hat Enterprise Linux Server Optional AUS (v. 7.3):

x86_64:
kernel-debug-debuginfo-3.10.0-514.104.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-514.104.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-514.104.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-514.104.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-514.104.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-514.104.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-514.104.1.el7.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/

  1. References:

https://access.redhat.com/security/cve/CVE-2022-1729
https://access.redhat.com/security/cve/CVE-2022-32250
https://access.redhat.com/security/updates/classification/#important

  1. Contact:

The Red Hat security contact is [email protected]. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2022 Red Hat, Inc.
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An update for kernel-rt is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-1012: kernel: Small table perturb size in the TCP source port generation algorithm can lead to information leak * CVE-2022-1729: kernel: race condition in perf_event_open leads to privilege escalation * CVE-2022-1966: kernel: a use-after-free write in the netfilter subsystem can lead to privilege escalation to root * CVE-2022-27666: kernel: buffer ov...

RHSA-2022:5224: Red Hat Security Advisory: kernel-rt security and bug fix update

An update for kernel-rt is now available for Red Hat Enterprise Linux 8.2 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2020-29368: kernel: the copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check * CVE-2022-1012: kernel: Small table perturb size in the TCP source port generation algorithm can lead to information leak * CVE-2022-1729: kernel: race condition in perf_event_open leads to p...

Red Hat Security Advisory 2022-5157-01

Red Hat Security Advisory 2022-5157-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include a privilege escalation vulnerability.

CVE-2022-32250: security - Linux Kernel use-after-free write in netfilter

net/netfilter/nf_tables_api.c in the Linux kernel through 5.18.1 allows a local user (able to create user/net namespaces) to escalate privileges to root because an incorrect NFT_STATEFUL_EXPR check leads to a use-after-free.

Packet Storm: Latest News

Acronis Cyber Protect/Backup Remote Code Execution