usn-4577-1
Vulnerability from osv_ubuntu
Published
2020-10-14 02:28
Modified
2026-06-03 10:45
Summary
linux-hwe, linux-gke-5.0, linux-gke-5.3, linux-oem-osp1, linux-raspi2-5.3 vulnerabilities
Details

Hadar Manor discovered that the DCCP protocol implementation in the Linux kernel improperly handled socket reuse, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-16119)

Giuseppe Scrivano discovered that the overlay file system in the Linux kernel did not properly perform permission checks in some situations. A local attacker could possibly use this to bypass intended restrictions and gain read access to restricted files. (CVE-2020-16120)

References
To clipboard 

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    {
      "database_specific": {
        "cves_map": {
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              "severity": [
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                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H",
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                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
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                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
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        "name": "linux-raspi2-5.3",
        "purl": "pkg:deb/ubuntu/linux-raspi2-5.3@5.3.0-1035.37?arch=source\u0026distro=bionic"
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      "ranges": [
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            {
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          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.3.0-1017.19~18.04.1",
        "5.3.0-1018.20~18.04.1",
        "5.3.0-1019.21~18.04.1",
        "5.3.0-1021.23~18.04.1",
        "5.3.0-1022.24~18.04.1",
        "5.3.0-1023.25~18.04.1",
        "5.3.0-1026.28~18.04.1",
        "5.3.0-1027.29~18.04.1",
        "5.3.0-1028.30~18.04.2",
        "5.3.0-1030.32~18.04.2",
        "5.3.0-1032.34",
        "5.3.0-1033.35"
      ]
    }
  ],
  "aliases": [],
  "details": "Hadar Manor discovered that the DCCP protocol implementation in the Linux\nkernel improperly handled socket reuse, leading to a use-after-free\nvulnerability. A local attacker could use this to cause a denial of service\n(system crash) or possibly execute arbitrary code. (CVE-2020-16119)\n\nGiuseppe Scrivano discovered that the overlay file system in the Linux\nkernel did not properly perform permission checks in some situations. A\nlocal attacker could possibly use this to bypass intended restrictions and\ngain read access to restricted files. (CVE-2020-16120)\n",
  "id": "USN-4577-1",
  "modified": "2026-06-03T10:45:22Z",
  "published": "2020-10-14T02:28:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4577-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-16119"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-16120"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "linux-hwe, linux-gke-5.0, linux-gke-5.3, linux-oem-osp1, linux-raspi2-5.3 vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2020-16119",
    "UBUNTU-CVE-2020-16120"
  ]
}



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Taxonomy of the tags.





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.