rhsa-2020_3810
Vulnerability from csaf_redhat
Published
2020-09-22 14:54
Modified
2024-11-05 22:43
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 MRG 2. 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: fuse-backed file mmap-ed onto process cmdline arguments causes denial of service (CVE-2018-1120) 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): * update the MRG 2.5.z 3.10 realtime-kernel sources (BZ#1863050)
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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      "acknowledgments": [
        {
          "names": [
            "Qualys Research Labs"
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      "cve": "CVE-2018-1120",
      "cwe": {
        "id": "CWE-122",
        "name": "Heap-based Buffer Overflow"
      },
      "discovery_date": "2018-05-07T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1575472"
        }
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      "notes": [
        {
          "category": "description",
          "text": "By mmap()ing a FUSE-backed file onto a process\u0027s memory containing command line arguments (or environment strings), an attacker can cause utilities from psutils or procps (such as ps, w) or any other program which makes a read() call to the /proc/\u003cpid\u003e/cmdline (or /proc/\u003cpid\u003e/environ) files to block indefinitely (denial of service) or for some controlled time (as a synchronization primitive for other attacks).",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: fuse-backed file mmap-ed onto process cmdline arguments causes denial of service",
          "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"
        }
      ],
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          "category": "self",
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          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1575472"
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          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2018-1120",
          "url": "https://www.cve.org/CVERecord?id=CVE-2018-1120"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2018-1120",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-1120"
        },
        {
          "category": "external",
          "summary": "http://seclists.org/oss-sec/2018/q2/122",
          "url": "http://seclists.org/oss-sec/2018/q2/122"
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      "release_date": "2018-05-17T17:00:00+00:00",
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          "category": "vendor_fix",
          "date": "2020-09-22T14:54:35+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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      ],
      "title": "kernel: fuse-backed file mmap-ed onto process cmdline arguments causes denial of service"
    }
  ]
}


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