usn-4462-1
Vulnerability from osv_ubuntu
Published
2020-08-18 04:25
Modified
2026-06-03 10:45
Summary
linux-gke-5.0, linux-oem-osp1 vulnerability
Details

It was discovered that the bcache subsystem in the Linux kernel did not properly release a lock in some error conditions. A local attacker could possibly use this to cause a denial of service.

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-12771",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
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          },
          {
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          },
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          },
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          },
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      },
      "package": {
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        "purl": "pkg:deb/ubuntu/linux-gke-5.0@5.0.0-1046.47?arch=source\u0026distro=bionic"
      },
      "ranges": [
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            }
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        }
      ],
      "versions": [
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        "5.0.0-1013.13~18.04.1",
        "5.0.0-1015.15~18.04.1",
        "5.0.0-1017.17~18.04.1",
        "5.0.0-1020.20~18.04.1",
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        "5.0.0-1023.23~18.04.2",
        "5.0.0-1025.26~18.04.1",
        "5.0.0-1026.27~18.04.2",
        "5.0.0-1027.28~18.04.1",
        "5.0.0-1029.30~18.04.1",
        "5.0.0-1030.31",
        "5.0.0-1032.33",
        "5.0.0-1033.34",
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        "5.0.0-1042.43",
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    },
    {
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                },
                {
                  "score": "low",
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                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
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        "binaries": [
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        "name": "linux-oem-osp1",
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      },
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        "5.0.0-1012.13",
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        "5.0.0-1047.52",
        "5.0.0-1050.55",
        "5.0.0-1052.57",
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        "5.0.0-1062.67",
        "5.0.0-1063.68",
        "5.0.0-1065.70"
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    }
  ],
  "aliases": [],
  "details": "It was discovered that the bcache subsystem in the Linux kernel did not\nproperly release a lock in some error conditions. A local attacker could\npossibly use this to cause a denial of service.\n",
  "id": "USN-4462-1",
  "modified": "2026-06-03T10:45:22Z",
  "published": "2020-08-18T04:25:56Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4462-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-12771"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "linux-gke-5.0, linux-oem-osp1 vulnerability",
  "upstream": [
    "UBUNTU-CVE-2020-12771"
  ]
}



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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.