rhsa-2022_5939
Vulnerability from csaf_redhat
Published
2022-08-09 11:52
Modified
2024-11-15 14:55
Summary
Red Hat Security Advisory: kernel-rt security and bug fix update
Notes
Topic
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 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.
Details
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
Security Fix(es):
* Incomplete cleanup of multi-core shared buffers (aka SBDR) (CVE-2022-21123)
* Incomplete cleanup of microarchitectural fill buffers (aka SBDS) (CVE-2022-21125)
* Incomplete cleanup in specific special register write operations (aka DRPW) (CVE-2022-21166)
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):
* The kernel-rt crashes where one task is indefinitely looping in __start_cfs_bandwidth() with the cfs_b->lock spinlock being held (BZ#2079976)
* update to the latest RHEL7.9.z16 source tree (BZ#2100182)
Terms of Use
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.
{ "document": { "aggregate_severity": { "namespace": "https://access.redhat.com/security/updates/classification/", "text": "Moderate" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "summary", "text": "An update for kernel-rt is now available for Red Hat Enterprise Linux 7.\n\nRed 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.", "title": "Topic" }, { "category": "general", "text": "The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.\n\nSecurity Fix(es):\n\n* Incomplete cleanup of multi-core shared buffers (aka SBDR) (CVE-2022-21123)\n\n* Incomplete cleanup of microarchitectural fill buffers (aka SBDS) (CVE-2022-21125)\n\n* Incomplete cleanup in specific special register write operations (aka DRPW) (CVE-2022-21166)\n\nFor 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.\n\nBug Fix(es):\n\n* The kernel-rt crashes where one task is indefinitely looping in __start_cfs_bandwidth() with the cfs_b-\u003elock spinlock being held (BZ#2079976)\n\n* update to the latest RHEL7.9.z16 source tree (BZ#2100182)", "title": "Details" }, { "category": "legal_disclaimer", "text": "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.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://access.redhat.com/security/team/contact/", "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.", "name": "Red Hat Product Security", "namespace": "https://www.redhat.com" }, "references": [ { "category": "self", "summary": "https://access.redhat.com/errata/RHSA-2022:5939", "url": "https://access.redhat.com/errata/RHSA-2022:5939" }, { "category": "external", "summary": "https://access.redhat.com/security/updates/classification/#moderate", "url": "https://access.redhat.com/security/updates/classification/#moderate" }, { "category": "external", "summary": "2090237", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2090237" }, { "category": "external", "summary": "2090240", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2090240" }, { "category": "external", "summary": "2090241", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2090241" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2022/rhsa-2022_5939.json" } ], "title": "Red Hat Security Advisory: kernel-rt security and bug fix update", "tracking": { "current_release_date": "2024-11-15T14:55:47+00:00", "generator": { "date": "2024-11-15T14:55:47+00:00", "engine": { "name": "Red Hat SDEngine", "version": "4.2.1" } }, "id": "RHSA-2022:5939", "initial_release_date": "2022-08-09T11:52:06+00:00", "revision_history": [ { "date": "2022-08-09T11:52:06+00:00", "number": "1", "summary": "Initial version" }, { "date": "2022-08-09T11:52:06+00:00", "number": "2", "summary": "Last updated version" }, { "date": "2024-11-15T14:55:47+00:00", "number": "3", "summary": "Last generated version" } ], "status": "final", "version": "3" } }, 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component of Red Hat Enterprise Linux for Real Time (v. 7)", "product_id": "7Server-RT-7.9.Z:kernel-rt-trace-kvm-debuginfo-0:3.10.0-1160.76.1.rt56.1220.el7.x86_64" }, "product_reference": "kernel-rt-trace-kvm-debuginfo-0:3.10.0-1160.76.1.rt56.1220.el7.x86_64", "relates_to_product_reference": "7Server-RT-7.9.Z" } ] }, "vulnerabilities": [ { "acknowledgments": [ { "names": [ "Intel" ] } ], "cve": "CVE-2022-21123", "cwe": { "id": "CWE-459", "name": "Incomplete Cleanup" }, "discovery_date": "2022-05-25T00:00:00+00:00", "ids": [ { "system_name": "Red Hat Bugzilla ID", "text": "2090237" } ], "notes": [ { "category": "description", "text": "A flaw was found in hw. Incomplete cleanup of multi-core shared buffers for some Intel\u00ae Processors may allow an authenticated user to enable information disclosure via local access.", "title": "Vulnerability description" }, { "category": "summary", "text": "hw: cpu: incomplete clean-up of multi-core shared buffers (aka SBDR)", "title": "Vulnerability summary" }, { "category": "other", "text": "Red Hat has very limited to no visibility and control over binary blobs provided by third-party vendors. Red Hat relies heavily on the vendors to provide timely updates and information about included changes for this content and in most cases merely acts as a release vehicle between the third-party vendor and Red Hat customers with no possibility of influencing or even documenting the changes. Unless explicitly stated, the level of insight, oversight, and control Red Hat has does not meet the criteria required (in terms of Red Hat ownership of development processes, QA, and documentation) for releasing this content as RHSA. For more information please contact the binary content vendor.", "title": "Statement" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "7Server-NFV-7.9.Z:kernel-rt-0:3.10.0-1160.76.1.rt56.1220.el7.src", "7Server-NFV-7.9.Z:kernel-rt-0:3.10.0-1160.76.1.rt56.1220.el7.x86_64", "7Server-NFV-7.9.Z:kernel-rt-debug-0:3.10.0-1160.76.1.rt56.1220.el7.x86_64", "7Server-NFV-7.9.Z:kernel-rt-debug-debuginfo-0:3.10.0-1160.76.1.rt56.1220.el7.x86_64", "7Server-NFV-7.9.Z:kernel-rt-debug-devel-0:3.10.0-1160.76.1.rt56.1220.el7.x86_64", "7Server-NFV-7.9.Z:kernel-rt-debug-kvm-0:3.10.0-1160.76.1.rt56.1220.el7.x86_64", "7Server-NFV-7.9.Z:kernel-rt-debug-kvm-debuginfo-0:3.10.0-1160.76.1.rt56.1220.el7.x86_64", 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"category": "description", "text": "A flaw was found in hw. Incomplete cleanup of microarchitectural fill buffers on some Intel\u00ae Processors may allow an authenticated user to enable information disclosure via local access.", "title": "Vulnerability description" }, { "category": "summary", "text": "hw: cpu: incomplete clean-up of microarchitectural fill buffers (aka SBDS)", "title": "Vulnerability summary" }, { "category": "other", "text": "Red Hat has very limited to no visibility and control over binary blobs provided by third-party vendors. Red Hat relies heavily on the vendors to provide timely updates and information about included changes for this content and in most cases merely acts as a release vehicle between the third-party vendor and Red Hat customers with no possibility of influencing or even documenting the changes. Unless explicitly stated, the level of insight, oversight, and control Red Hat has does not meet the criteria required (in terms of Red Hat ownership of development processes, QA, and documentation) for releasing this content as RHSA. For more information please contact the binary content vendor.", "title": "Statement" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "7Server-NFV-7.9.Z:kernel-rt-0:3.10.0-1160.76.1.rt56.1220.el7.src", "7Server-NFV-7.9.Z:kernel-rt-0:3.10.0-1160.76.1.rt56.1220.el7.x86_64", "7Server-NFV-7.9.Z:kernel-rt-debug-0:3.10.0-1160.76.1.rt56.1220.el7.x86_64", "7Server-NFV-7.9.Z:kernel-rt-debug-debuginfo-0:3.10.0-1160.76.1.rt56.1220.el7.x86_64", "7Server-NFV-7.9.Z:kernel-rt-debug-devel-0:3.10.0-1160.76.1.rt56.1220.el7.x86_64", "7Server-NFV-7.9.Z:kernel-rt-debug-kvm-0:3.10.0-1160.76.1.rt56.1220.el7.x86_64", "7Server-NFV-7.9.Z:kernel-rt-debug-kvm-debuginfo-0:3.10.0-1160.76.1.rt56.1220.el7.x86_64", 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"category": "description", "text": "A flaw was found in hw. Incomplete cleanup in specific special register write operations for some Intel\u00ae Processors may allow an authenticated user to enable information disclosure via local access.", "title": "Vulnerability description" }, { "category": "summary", "text": "hw: cpu: incomplete clean-up in specific special register write operations (aka DRPW)", "title": "Vulnerability summary" }, { "category": "other", "text": "Red Hat has very limited to no visibility and control over binary blobs provided by third-party vendors. Red Hat relies heavily on the vendors to provide timely updates and information about included changes for this content and in most cases merely acts as a release vehicle between the third-party vendor and Red Hat customers with no possibility of influencing or even documenting the changes. Unless explicitly stated, the level of insight, oversight, and control Red Hat has does not meet the criteria required (in terms of Red Hat ownership of development processes, QA, and documentation) for releasing this content as RHSA. For more information please contact the binary content vendor.", "title": "Statement" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "7Server-NFV-7.9.Z:kernel-rt-0:3.10.0-1160.76.1.rt56.1220.el7.src", "7Server-NFV-7.9.Z:kernel-rt-0:3.10.0-1160.76.1.rt56.1220.el7.x86_64", "7Server-NFV-7.9.Z:kernel-rt-debug-0:3.10.0-1160.76.1.rt56.1220.el7.x86_64", "7Server-NFV-7.9.Z:kernel-rt-debug-debuginfo-0:3.10.0-1160.76.1.rt56.1220.el7.x86_64", "7Server-NFV-7.9.Z:kernel-rt-debug-devel-0:3.10.0-1160.76.1.rt56.1220.el7.x86_64", "7Server-NFV-7.9.Z:kernel-rt-debug-kvm-0:3.10.0-1160.76.1.rt56.1220.el7.x86_64", "7Server-NFV-7.9.Z:kernel-rt-debug-kvm-debuginfo-0:3.10.0-1160.76.1.rt56.1220.el7.x86_64", 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"category": "description", "text": "A flaw was found in hw. The APIC can operate in xAPIC mode (also known as a legacy mode), in which APIC configuration registers are exposed through a memory-mapped I/O (MMIO) page. This flaw allows an attacker who can execute code on a target CPU to query the APIC configuration page. When reading the APIC configuration page with an unaligned read from the MMIO page, the registers may return stale data from previous requests made by the same processor core to the same configuration page, leading to unauthorized access.", "title": "Vulnerability description" }, { "category": "summary", "text": "hw: cpu: Intel: Stale Data Read from legacy xAPIC vulnerability", "title": "Vulnerability summary" }, { "category": "other", "text": "Red Hat has very limited to no visibility and control over binary blobs provided by third-party vendors. Red Hat relies heavily on the vendors to provide timely updates and information about included changes for this content and in most cases merely acts as a release vehicle between the third-party vendor and Red Hat customers with no possibility of influencing or even documenting the changes. Unless explicitly stated, the level of insight, oversight, and control Red Hat has does not meet the criteria required (in terms of Red Hat ownership of development processes, QA, and documentation) for releasing this content as RHSA. For more information please contact the binary content vendor.", "title": "Statement" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "7Server-NFV-7.9.Z:kernel-rt-0:3.10.0-1160.76.1.rt56.1220.el7.src", "7Server-NFV-7.9.Z:kernel-rt-0:3.10.0-1160.76.1.rt56.1220.el7.x86_64", "7Server-NFV-7.9.Z:kernel-rt-debug-0:3.10.0-1160.76.1.rt56.1220.el7.x86_64", "7Server-NFV-7.9.Z:kernel-rt-debug-debuginfo-0:3.10.0-1160.76.1.rt56.1220.el7.x86_64", "7Server-NFV-7.9.Z:kernel-rt-debug-devel-0:3.10.0-1160.76.1.rt56.1220.el7.x86_64", "7Server-NFV-7.9.Z:kernel-rt-debug-kvm-0:3.10.0-1160.76.1.rt56.1220.el7.x86_64", "7Server-NFV-7.9.Z:kernel-rt-debug-kvm-debuginfo-0:3.10.0-1160.76.1.rt56.1220.el7.x86_64", 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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.