Headline
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 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 overflow in IPsec ESP transformation code
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Issued:
2022-06-28
Updated:
2022-06-28
RHSA-2022:5224 - Security Advisory
- Overview
- Updated Packages
Synopsis
Important: kernel-rt security and bug fix update
Type/Severity
Security Advisory: Important
Topic
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.
Description
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
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)
- kernel: the copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check (CVE-2020-29368)
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):
- kernel-rt: update RT source tree to the latest RHEL-8.2.z18 Batch (BZ#2081080)
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.
Affected Products
- Red Hat Enterprise Linux for Real Time - Telecommunications Update Service 8.2 x86_64
Fixes
- BZ - 1903244 - CVE-2020-29368 kernel: the copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check
- BZ - 2061633 - CVE-2022-27666 kernel: buffer overflow in IPsec ESP transformation code
- BZ - 2064604 - CVE-2022-1012 kernel: Small table perturb size in the TCP source port generation algorithm can lead to information leak
- BZ - 2086753 - CVE-2022-1729 kernel: race condition in perf_event_open leads to privilege escalation
- BZ - 2092427 - CVE-2022-1966 kernel: a use-after-free write in the netfilter subsystem can lead to privilege escalation to root
CVEs
- CVE-2020-29368
- CVE-2022-1012
- CVE-2022-1729
- CVE-2022-1966
- CVE-2022-27666
Red Hat Enterprise Linux for Real Time - Telecommunications Update Service 8.2
SRPM
x86_64
The Red Hat security contact is [email protected]. More contact details at https://access.redhat.com/security/team/contact/.
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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...
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...
An update for kernel-rt is now available for Red Hat Enterprise Linux 7. 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-2022-1729: 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
An update for kernel-rt is now available for Red Hat Enterprise Linux 7. 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-2022-1729: 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
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 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-2022-1966: kernel: a use-after-free write in the netfilter subsystem can lead to privilege escalation to root * CVE-2022-27666: kernel: buffer overflow in IPsec ESP transformation code
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.
An update for kernel is now available for Red Hat Enterprise Linux 7.4 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.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-2022-0492: kernel: cgroups v1 release_agent feature may allow privilege escalation * CVE-2022-1729: kernel: race condition in perf_event_open leads to privilege escalation
Aaron Adams discovered that the netfilter subsystem in the Linux kernel did not properly handle the removal of stateful expressions in some situations, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code. Ziming Zhang discovered that the netfilter subsystem in the Linux kernel did not properly validate sets with multiple ranged fields. A local attacker could use this to cause a denial of service or execute arbitrary code.
Red Hat Security Advisory 2022-4942-01 - 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. Issues addressed include a buffer overflow vulnerability.
Ubuntu Security Notice 5471-1 - It was discovered that the Linux kernel did not properly restrict access to the kernel debugger when booted in secure boot environments. A privileged attacker could use this to bypass UEFI Secure Boot restrictions. Aaron Adams discovered that the netfilter subsystem in the Linux kernel did not properly handle the removal of stateful expressions in some situations, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or execute arbitrary code.
Ubuntu Security Notice 5471-1 - It was discovered that the Linux kernel did not properly restrict access to the kernel debugger when booted in secure boot environments. A privileged attacker could use this to bypass UEFI Secure Boot restrictions. Aaron Adams discovered that the netfilter subsystem in the Linux kernel did not properly handle the removal of stateful expressions in some situations, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or execute arbitrary code.
Ubuntu Security Notice 5470-1 - It was discovered that the Linux kernel did not properly restrict access to the kernel debugger when booted in secure boot environments. A privileged attacker could use this to bypass UEFI Secure Boot restrictions. Aaron Adams discovered that the netfilter subsystem in the Linux kernel did not properly handle the removal of stateful expressions in some situations, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or execute arbitrary code.
Ubuntu Security Notice 5468-1 - It was discovered that the Linux kernel did not properly restrict access to the kernel debugger when booted in secure boot environments. A privileged attacker could use this to bypass UEFI Secure Boot restrictions. Aaron Adams discovered that the netfilter subsystem in the Linux kernel did not properly handle the removal of stateful expressions in some situations, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or execute arbitrary code.
Ubuntu Security Notice 5467-1 - It was discovered that the Linux kernel did not properly restrict access to the kernel debugger when booted in secure boot environments. A privileged attacker could use this to bypass UEFI Secure Boot restrictions. Aaron Adams discovered that the netfilter subsystem in the Linux kernel did not properly handle the removal of stateful expressions in some situations, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or execute arbitrary code.
Ubuntu Security Notice 5466-1 - It was discovered that the Linux kernel did not properly restrict access to the kernel debugger when booted in secure boot environments. A privileged attacker could use this to bypass UEFI Secure Boot restrictions. Aaron Adams discovered that the netfilter subsystem in the Linux kernel did not properly handle the removal of stateful expressions in some situations, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or execute arbitrary code.
Ubuntu Security Notice 5465-1 - It was discovered that the Linux kernel did not properly restrict access to the kernel debugger when booted in secure boot environments. A privileged attacker could use this to bypass UEFI Secure Boot restrictions. Aaron Adams discovered that the netfilter subsystem in the Linux kernel did not properly handle the removal of stateful expressions in some situations, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or execute arbitrary code.
Red Hat Security Advisory 2022-4924-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include a buffer overflow vulnerability.
An update for kernel is now available for Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions. 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-2022-27666: kernel: buffer overflow in IPsec ESP transformation code
A use-after-free vulnerability was found in the Linux kernel's Netfilter subsystem in net/netfilter/nf_tables_api.c. This flaw allows a local attacker with user access to cause a privilege escalation issue.
Red Hat Security Advisory 2022-4835-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include a buffer overflow vulnerability.
Red Hat Security Advisory 2022-4829-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include a buffer overflow vulnerability.
Red Hat Security Advisory 2022-4809-01 - 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. Issues addressed include a buffer overflow vulnerability.
An update for kernel-rt is now available for Red Hat Enterprise Linux 8.4 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-2021-4037: kernel: security regression for CVE-2018-13405 * CVE-2021-20322: kernel: new DNS Cache Poisoning Attack based on ICMP fragment needed packets replies * CVE-2022-27666: kernel: buffer overflow in IPsec ESP transformation code
An update for kernel is now available for Red Hat Enterprise Linux 8.4 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-2021-4037: kernel: security regression for CVE-2018-13405 * CVE-2021-20322: kernel: new DNS Cache Poisoning Attack based on ICMP fragment needed packets replies * CVE-2022-27666: kernel: buffer overflow in IPsec ESP transformation code
An update for kpatch-patch is now available for Red Hat Enterprise Linux 8.4 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-2022-27666: kernel: buffer overflow in IPsec ESP transformation code
A heap buffer overflow flaw was found in IPsec ESP transformation code in net/ipv4/esp4.c and net/ipv6/esp6.c. This flaw allows a local attacker with a normal user privilege to overwrite kernel heap objects and may cause a local privilege escalation threat.
In NotificationStackScrollLayout of NotificationStackScrollLayout.java, there is a possible way to bypass Factory Reset Protections. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12Android ID: A-193149550
An update for kernel is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. 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-2019-14615: kernel: Intel graphics card information leak. * CVE-2020-0427: kernel: out-of-bounds reads in pinctrl subsystem. * CVE-2020-24502: kernel: Improper input validation in some Intel(R) Ethernet E810 Adapter drivers * CVE-2020-24503: kernel: Insufficient access control in some Intel(R) Ethernet E810 Adapter drivers * CVE-2020-24504: kernel: Uncontroll...
An update for kernel-rt is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. 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-2019-14615: kernel: Intel graphics card information leak. * CVE-2020-0427: kernel: out-of-bounds reads in pinctrl subsystem. * CVE-2020-24502: kernel: Improper input validation in some Intel(R) Ethernet E810 Adapter drivers * CVE-2020-24503: kernel: Insufficient access control in some Intel(R) Ethernet E810 Adapter drivers * CVE-2020-24504: kernel: Uncontr...