rhsa-2021_2715
Vulnerability from csaf_redhat
Published
2021-07-20 20:59
Modified
2024-11-05 23:45
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 8.
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.
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):
* kernel: size_t-to-int conversion vulnerability in the filesystem layer (CVE-2021-33909)
* kernel: race condition for removal of the HCI controller (CVE-2021-32399)
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 RHEL-8.4.z2 source tree (BZ#1975405)
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": "Important" }, "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 8.\n\nRed 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.", "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* kernel: size_t-to-int conversion vulnerability in the filesystem layer (CVE-2021-33909)\n\n* kernel: race condition for removal of the HCI controller (CVE-2021-32399)\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* kernel-rt: update RT source tree to the RHEL-8.4.z2 source tree (BZ#1975405)", "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-2021:2715", "url": "https://access.redhat.com/errata/RHSA-2021:2715" }, { "category": "external", "summary": "https://access.redhat.com/security/updates/classification/#important", "url": "https://access.redhat.com/security/updates/classification/#important" }, { "category": "external", "summary": "https://access.redhat.com/security/vulnerabilities/RHSB-2021-006", "url": "https://access.redhat.com/security/vulnerabilities/RHSB-2021-006" }, { "category": "external", "summary": "1970273", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1970273" }, { "category": "external", "summary": "1970807", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1970807" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2021/rhsa-2021_2715.json" } ], "title": "Red Hat Security Advisory: kernel-rt security and bug fix update", "tracking": { "current_release_date": "2024-11-05T23:45:48+00:00", "generator": { "date": "2024-11-05T23:45:48+00:00", "engine": { "name": "Red Hat SDEngine", "version": "4.1.1" } }, "id": "RHSA-2021:2715", "initial_release_date": "2021-07-20T20:59:11+00:00", "revision_history": [ { "date": "2021-07-20T20:59:11+00:00", "number": "1", "summary": "Initial version" }, { "date": "2021-07-20T20:59:11+00:00", "number": "2", "summary": "Last updated version" }, { "date": 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This flaw allows an attacker with a local account to exploit a race condition, leading to corrupted memory and possible privilege escalation. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.", "title": "Vulnerability description" }, { "category": "summary", "text": "kernel: race condition for removal of the HCI controller", "title": "Vulnerability summary" }, { "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": [ "NFV-8.4.0.Z.MAIN.EUS:kernel-rt-0:4.18.0-305.10.2.rt7.83.el8_4.src", "NFV-8.4.0.Z.MAIN.EUS:kernel-rt-0:4.18.0-305.10.2.rt7.83.el8_4.x86_64", "NFV-8.4.0.Z.MAIN.EUS:kernel-rt-core-0:4.18.0-305.10.2.rt7.83.el8_4.x86_64", "NFV-8.4.0.Z.MAIN.EUS:kernel-rt-debug-0:4.18.0-305.10.2.rt7.83.el8_4.x86_64", "NFV-8.4.0.Z.MAIN.EUS:kernel-rt-debug-core-0:4.18.0-305.10.2.rt7.83.el8_4.x86_64", 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This flaw allows a local attacker with a user privilege to gain access to out-of-bound memory, leading to a system crash, leak of internal kernel information and can escalate privileges. The issue results from not validating the size_t-to-int conversion prior to performing operations. The highest threat from this vulnerability is to data integrity, confidentiality and system availability.", "title": "Vulnerability description" }, { "category": "summary", "text": "kernel: size_t-to-int conversion vulnerability in the filesystem layer", "title": "Vulnerability summary" }, { "category": "other", "text": "Any Red Hat product which relies on the Red Hat Enterprise Linux kernel is also potentially impacted. \nThis includes layered products such as OpenShift Container Platform, OpenStack, Red Hat Virtualization, and others.", "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": [ "NFV-8.4.0.Z.MAIN.EUS:kernel-rt-0:4.18.0-305.10.2.rt7.83.el8_4.src", 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- 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.