rhsa-2020_2665
Vulnerability from csaf_redhat
Published
2020-06-23 12:24
Modified
2024-11-05 22:22
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 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: vfio: access to disabled MMIO space of some devices may lead to DoS scenario (CVE-2020-12888) 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: hw: provide reporting and microcode mitigation toggle for CVE-2020-0543 / Special Register Buffer Data Sampling (SRBDS) (BZ#1827198) * kernel-rt: update to the latest RHEL7.8.z source tree (BZ#1844620)
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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          "text": "A flaw was found in the Linux kernel, where it allows userspace processes, for example, a guest VM, to directly access h/w devices via its VFIO driver modules. The VFIO modules allow users to enable or disable access to the devices\u0027 MMIO memory address spaces. If a user attempts to access the read/write devices\u0027 MMIO address space when it is disabled, some h/w devices issue an interrupt to the CPU to indicate a fatal error condition, crashing the system. This flaw allows a guest user or process to crash the host system resulting in a denial of service.",
          "title": "Vulnerability description"
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          "category": "summary",
          "text": "Kernel: vfio: access to disabled MMIO space of some devices may lead to DoS scenario",
          "title": "Vulnerability summary"
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        {
          "category": "other",
          "text": "This issue does not affect the versions of the kernel package as shipped with Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG 2.\nThis issue affects the versions of the kernel package as shipped with Red Hat Enterprise Linux 7 and 8. Future kernel updates for Red Hat Enterprise Linux 7 and 8 may address this issue.",
          "title": "Statement"
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        {
          "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.",
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          "url": "https://access.redhat.com/security/cve/CVE-2020-12888"
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        {
          "category": "external",
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          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1836244"
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          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2020-12888",
          "url": "https://www.cve.org/CVERecord?id=CVE-2020-12888"
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          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-12888",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-12888"
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}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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