rhsa-2019_2828
Vulnerability from csaf_redhat
Published
2019-09-20 07:03
Modified
2024-11-05 21:25
Summary
Red Hat Security Advisory: kernel-rt security 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):
* A buffer overflow flaw was found in the way Linux kernel's vhost functionality that translates virtqueue buffers to IOVs, logged the buffer descriptors during migration. A privileged guest user able to pass descriptors with invalid length to the host when migration is underway, could use this flaw to increase their privileges on the host. (CVE-2019-14835)
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.
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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* A buffer overflow flaw was found in the way Linux kernel\u0027s vhost functionality that translates virtqueue buffers to IOVs, logged the buffer descriptors during migration. A privileged guest user able to pass descriptors with invalid length to the host when migration is underway, could use this flaw to increase their privileges on the host. (CVE-2019-14835)", "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-2019:2828", "url": "https://access.redhat.com/errata/RHSA-2019:2828" }, { "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/kernel-vhost", "url": "https://access.redhat.com/security/vulnerabilities/kernel-vhost" }, { "category": "external", "summary": "1750727", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1750727" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2019/rhsa-2019_2828.json" } ], "title": "Red Hat Security Advisory: kernel-rt security update", "tracking": { "current_release_date": "2024-11-05T21:25:52+00:00", "generator": { "date": "2024-11-05T21:25:52+00:00", "engine": { "name": "Red Hat SDEngine", "version": "4.1.1" } }, "id": "RHSA-2019:2828", "initial_release_date": "2019-09-20T07:03:55+00:00", "revision_history": [ { "date": "2019-09-20T07:03:55+00:00", "number": "1", "summary": "Initial version" }, { "date": "2019-09-20T07:03:55+00:00", "number": "2", "summary": "Last updated version" }, { "date": "2024-11-05T21:25:52+00:00", "number": "3", "summary": "Last generated version" } ], "status": "final", "version": "3" } }, 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A privileged guest user able to pass descriptors with invalid length to the host when migration is underway, could use this flaw to increase their privileges on the host. In the worst case (and likely most common virtualization) scenario this flaw affects KVM/qemu hypervisor enabled hosts running Linux guests.", "title": "Vulnerability description" }, { "category": "summary", "text": "kernel: vhost-net: guest to host kernel escape during migration", "title": "Vulnerability summary" }, { "category": "other", "text": "Red Hat Product Security is aware of this issue. Updates will be released as they become available. For additional information, please refer to the Red Hat Knowledgebase article: https://access.redhat.com/security/vulnerabilities/kernel-vhost", "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-8.0.0.Z:kernel-rt-0:4.18.0-80.11.2.rt9.157.el8_0.src", "NFV-8.0.0.Z:kernel-rt-0:4.18.0-80.11.2.rt9.157.el8_0.x86_64", "NFV-8.0.0.Z:kernel-rt-core-0:4.18.0-80.11.2.rt9.157.el8_0.x86_64", "NFV-8.0.0.Z:kernel-rt-debug-0:4.18.0-80.11.2.rt9.157.el8_0.x86_64", "NFV-8.0.0.Z:kernel-rt-debug-core-0:4.18.0-80.11.2.rt9.157.el8_0.x86_64", "NFV-8.0.0.Z:kernel-rt-debug-debuginfo-0:4.18.0-80.11.2.rt9.157.el8_0.x86_64", "NFV-8.0.0.Z:kernel-rt-debug-devel-0:4.18.0-80.11.2.rt9.157.el8_0.x86_64", 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Sightings
Author | Source | Type | Date |
---|
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.