usn-8643-2
Vulnerability from osv_ubuntu
Published
2026-08-20 21:32
Modified
2026-08-20 21:32
Summary
linux-gke, linux-lowlatency, linux-lowlatency-hwe-6.8 vulnerabilities
Details

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Network drivers; - Open vSwitch; - SCTP protocol; (CVE-2026-53224, CVE-2026-53246, CVE-2026-53247, CVE-2026-64531)


{
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              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-53246",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-53247",
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                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
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            },
            {
              "id": "CVE-2026-64531",
              "severity": [
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                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
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                }
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            }
          ],
          "ecosystem": "Ubuntu:22.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
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                  "type": "CVSS_V4"
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                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
                  "type": "CVSS_V3"
                },
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                  "score": "high",
                  "type": "Ubuntu"
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              "id": "CVE-2026-53246",
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                },
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                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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                },
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              "id": "CVE-2026-53247",
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                  "score": "low",
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            {
              "id": "CVE-2026-64531",
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                  "score": "CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
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                },
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          "ecosystem": "Ubuntu:24.04:LTS"
        }
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        "availability": "No subscription required",
        "binaries": [
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                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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        "6.8.0-64.67.1",
        "6.8.0-65.68.1",
        "6.8.0-78.78.1",
        "6.8.0-79.79.1",
        "6.8.0-83.83.1",
        "6.8.0-84.84.1",
        "6.8.0-85.85.1",
        "6.8.0-86.87.1",
        "6.8.0-87.88.1",
        "6.8.0-88.89.1",
        "6.8.0-90.91.1",
        "6.8.0-94.96.1",
        "6.8.0-100.100.1",
        "6.8.0-101.101.1",
        "6.8.0-106.106.1",
        "6.8.0-107.107.1",
        "6.8.0-110.110.1",
        "6.8.0-111.111.1",
        "6.8.0-117.117.1",
        "6.8.0-134.134.1",
        "6.8.0-136.136.2",
        "6.8.0-137.137.1"
      ]
    }
  ],
  "aliases": [],
  "details": "Several security issues were discovered in the Linux kernel.\nAn attacker could possibly use these to compromise the system.\nThis update corrects flaws in the following subsystems:\n  - Network drivers;\n  - Open vSwitch;\n  - SCTP protocol;\n(CVE-2026-53224, CVE-2026-53246, CVE-2026-53247, CVE-2026-64531)\n",
  "id": "USN-8643-2",
  "modified": "2026-08-20T21:32:40Z",
  "published": "2026-08-20T21:32:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8643-2"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-53224"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-53246"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-53247"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-64531"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "linux-gke, linux-lowlatency, linux-lowlatency-hwe-6.8 vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2026-53224",
    "UBUNTU-CVE-2026-53246",
    "UBUNTU-CVE-2026-53247",
    "UBUNTU-CVE-2026-64531"
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Detection rules are retrieved from Rulezet.

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