rhsa-2020_5026
Vulnerability from csaf_redhat
Published
2020-11-10 13:21
Modified
2024-11-05 22:59
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): * kernel: kernel: buffer over write in vgacon_scroll (CVE-2020-14331) * kernel: net-sysfs: *_queue_add_kobject refcount issue (CVE-2019-20811) 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): * [RHEL-7.9] net/ipv6/ip6_flowlabel.c:85 suspicious rcu_dereference_check() usage! (kernel-rt-debug) (BZ#1836846) * md/raid: sleeping function called from invalid context triggered by CKI storage/swraid/trim test (BZ#1857872) * Infinite looping when trying to acquire eventpoll->mtx during eventpoll_release_file, 2nd try (BZ#1877695) * kernel-rt: update to the latest RHEL7.9.z1 source tree (BZ#1883995)
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": "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.",
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        "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: kernel: buffer over write in vgacon_scroll (CVE-2020-14331)\n\n* kernel: net-sysfs: *_queue_add_kobject refcount issue (CVE-2019-20811)\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* [RHEL-7.9] net/ipv6/ip6_flowlabel.c:85 suspicious rcu_dereference_check() usage! (kernel-rt-debug) (BZ#1836846)\n\n* md/raid: sleeping function called from invalid context triggered by CKI storage/swraid/trim test (BZ#1857872)\n\n* Infinite looping when trying to acquire eventpoll-\u003emtx during eventpoll_release_file, 2nd try (BZ#1877695)\n\n* kernel-rt: update to the latest RHEL7.9.z1 source tree (BZ#1883995)",
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          "text": "A flaw was found in the way the rx_queue_add_kobject and netdev_queue_add_kobject functions in the Linux kernel handled refcounting of certain objects. This flaw allows a local user who can trigger the error code path to use this vulnerability to disturb the integrity of the system.",
          "title": "Vulnerability description"
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          "text": "kernel: net-sysfs: *_queue_add_kobject refcount issue",
          "title": "Vulnerability summary"
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        {
          "category": "other",
          "text": "This issue is rated as having Low impact because of the preconditions needed to trigger the error code path (privileges).",
          "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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          "title": "Vulnerability description"
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        {
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          "title": "Vulnerability summary"
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        {
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          "text": "This flaw is rated as a having Moderate impact, because only local user with access to VGA console can trigger it (for example if booting with param \"nomodeset\").",
          "title": "Statement"
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            "7Server-RT-7.9.Z:kernel-rt-trace-devel-0:3.10.0-1160.6.1.rt56.1139.el7.x86_64",
            "7Server-RT-7.9.Z:kernel-rt-trace-kvm-0:3.10.0-1160.6.1.rt56.1139.el7.x86_64",
            "7Server-RT-7.9.Z:kernel-rt-trace-kvm-debuginfo-0:3.10.0-1160.6.1.rt56.1139.el7.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "kernel: kernel: buffer over write in vgacon_scroll"
    }
  ]
}


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