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lsn-0066-1
Vulnerability from osv_ubuntu
Published
2020-05-01 07:44
Modified
2026-06-03 10:46
Summary
Kernel Live Patch Security Notice
Details

It was discovered that the virtual terminal implementation in the Linux kernel did not properly handle resize events. A local attacker could use this to expose sensitive information. (CVE-2020-8647)

It was discovered that the virtual terminal implementation in the Linux kernel contained a race condition. A local attacker could possibly use this to cause a denial of service (system crash) or expose sensitive information. (CVE-2020-8648)

It was discovered that the virtual terminal implementation in the Linux kernel did not properly handle resize events. A local attacker could use this to expose sensitive information. (CVE-2020-8649)

References
To clipboard 

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        "4.15.0-88.88",
        "4.15.0-91.92",
        "4.15.0-96.97"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Livepatch subscription required",
        "module_name_regex": "lkp_Ubuntu_4_15_0[_|\\d]+_oem_(\\d+)",
        "module_version": "66"
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "linux-oem",
        "purl": "pkg:deb/ubuntu/linux-oem@4.15.0-1080.90?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.15.0-1080.90"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.15.0-1002.3",
        "4.15.0-1004.5",
        "4.15.0-1006.9",
        "4.15.0-1008.11",
        "4.15.0-1009.12",
        "4.15.0-1012.15",
        "4.15.0-1013.16",
        "4.15.0-1015.18",
        "4.15.0-1017.20",
        "4.15.0-1018.21",
        "4.15.0-1021.24",
        "4.15.0-1024.29",
        "4.15.0-1026.31",
        "4.15.0-1028.33",
        "4.15.0-1030.35",
        "4.15.0-1033.38",
        "4.15.0-1034.39",
        "4.15.0-1035.40",
        "4.15.0-1036.41",
        "4.15.0-1038.43",
        "4.15.0-1039.44",
        "4.15.0-1043.48",
        "4.15.0-1045.50",
        "4.15.0-1050.57",
        "4.15.0-1056.65",
        "4.15.0-1057.66",
        "4.15.0-1059.68",
        "4.15.0-1063.72",
        "4.15.0-1064.73",
        "4.15.0-1065.75",
        "4.15.0-1066.76",
        "4.15.0-1067.77",
        "4.15.0-1069.79",
        "4.15.0-1073.83",
        "4.15.0-1076.86",
        "4.15.0-1079.89"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that the virtual terminal implementation in the Linux\nkernel did not properly handle resize events. A local attacker could use\nthis to expose sensitive information. (CVE-2020-8647)\n\nIt was discovered that the virtual terminal implementation in the Linux\nkernel contained a race condition. A local attacker could possibly use this\nto cause a denial of service (system crash) or expose sensitive\ninformation. (CVE-2020-8648)\n\nIt was discovered that the virtual terminal implementation in the Linux\nkernel did not properly handle resize events. A local attacker could use\nthis to expose sensitive information. (CVE-2020-8649)",
  "id": "LSN-0066-1",
  "modified": "2026-06-03T10:46:31Z",
  "published": "2020-05-01T07:44:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/LSN-0066-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-8647"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-8648"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-8649"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "Kernel Live Patch Security Notice",
  "upstream": [
    "UBUNTU-CVE-2020-8647",
    "UBUNTU-CVE-2020-8648",
    "UBUNTU-CVE-2020-8649"
  ]
}



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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.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.