usn-4313-1
Vulnerability from osv_ubuntu
Published
2020-03-30 18:10
Modified
2026-02-10 04:41
Summary
linux, linux-aws, linux-azure, linux-azure-5.3, linux-gcp, linux-gcp-5.3, linux-gke-5.3, linux-hwe, linux-kvm, linux-oracle, linux-oracle-5.3, linux-raspi2, linux-raspi2-5.3 vulnerability
Details

Manfred Paul discovered that the bpf verifier in the Linux kernel did not properly calculate register bounds for certain operations. A local attacker could use this to expose sensitive information (kernel memory) or gain administrative privileges.

References
To clipboard 

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            "binary_name": "vlan-modules-5.3.0-45-generic-lpae-di",
            "binary_version": "5.3.0-45.37~18.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "linux-hwe",
        "purl": "pkg:deb/ubuntu/linux-hwe@5.3.0-45.37~18.04.1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.3.0-45.37~18.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.18.0-13.14~18.04.1",
        "4.18.0-14.15~18.04.1",
        "4.18.0-15.16~18.04.1",
        "4.18.0-16.17~18.04.1",
        "4.18.0-17.18~18.04.1",
        "4.18.0-18.19~18.04.1",
        "4.18.0-20.21~18.04.1",
        "4.18.0-21.22~18.04.1",
        "4.18.0-22.23~18.04.1",
        "4.18.0-24.25~18.04.1",
        "4.18.0-25.26~18.04.1",
        "5.0.0-23.24~18.04.1",
        "5.0.0-25.26~18.04.1",
        "5.0.0-27.28~18.04.1",
        "5.0.0-29.31~18.04.1",
        "5.0.0-31.33~18.04.1",
        "5.0.0-32.34~18.04.2",
        "5.0.0-35.38~18.04.1",
        "5.0.0-36.39~18.04.1",
        "5.0.0-37.40~18.04.1",
        "5.3.0-26.28~18.04.1",
        "5.3.0-28.30~18.04.1",
        "5.3.0-40.32~18.04.1",
        "5.3.0-42.34~18.04.1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-8835",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "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",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "linux-buildinfo-5.3.0-1013-oracle",
            "binary_version": "5.3.0-1013.14~18.04.1"
          },
          {
            "binary_name": "linux-headers-5.3.0-1013-oracle",
            "binary_version": "5.3.0-1013.14~18.04.1"
          },
          {
            "binary_name": "linux-image-unsigned-5.3.0-1013-oracle",
            "binary_version": "5.3.0-1013.14~18.04.1"
          },
          {
            "binary_name": "linux-modules-5.3.0-1013-oracle",
            "binary_version": "5.3.0-1013.14~18.04.1"
          },
          {
            "binary_name": "linux-modules-extra-5.3.0-1013-oracle",
            "binary_version": "5.3.0-1013.14~18.04.1"
          },
          {
            "binary_name": "linux-oracle-5.3-headers-5.3.0-1013",
            "binary_version": "5.3.0-1013.14~18.04.1"
          },
          {
            "binary_name": "linux-oracle-5.3-tools-5.3.0-1013",
            "binary_version": "5.3.0-1013.14~18.04.1"
          },
          {
            "binary_name": "linux-tools-5.3.0-1013-oracle",
            "binary_version": "5.3.0-1013.14~18.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "linux-oracle-5.3",
        "purl": "pkg:deb/ubuntu/linux-oracle-5.3@5.3.0-1013.14~18.04.1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.3.0-1013.14~18.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.3.0-1011.12~18.04.1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-8835",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "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",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "linux-buildinfo-5.3.0-1021-raspi2",
            "binary_version": "5.3.0-1021.23~18.04.1"
          },
          {
            "binary_name": "linux-headers-5.3.0-1021-raspi2",
            "binary_version": "5.3.0-1021.23~18.04.1"
          },
          {
            "binary_name": "linux-image-5.3.0-1021-raspi2",
            "binary_version": "5.3.0-1021.23~18.04.1"
          },
          {
            "binary_name": "linux-modules-5.3.0-1021-raspi2",
            "binary_version": "5.3.0-1021.23~18.04.1"
          },
          {
            "binary_name": "linux-raspi2-5.3-headers-5.3.0-1021",
            "binary_version": "5.3.0-1021.23~18.04.1"
          },
          {
            "binary_name": "linux-raspi2-5.3-tools-5.3.0-1021",
            "binary_version": "5.3.0-1021.23~18.04.1"
          },
          {
            "binary_name": "linux-tools-5.3.0-1021-raspi2",
            "binary_version": "5.3.0-1021.23~18.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "linux-raspi2-5.3",
        "purl": "pkg:deb/ubuntu/linux-raspi2-5.3@5.3.0-1021.23~18.04.1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.3.0-1021.23~18.04.1"
            }
          ],
          "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"
      ]
    }
  ],
  "aliases": [],
  "details": "Manfred Paul discovered that the bpf verifier in the Linux kernel did not\nproperly calculate register bounds for certain operations. A local attacker\ncould use this to expose sensitive information (kernel memory) or gain\nadministrative privileges.\n",
  "id": "USN-4313-1",
  "modified": "2026-02-10T04:41:48Z",
  "published": "2020-03-30T18:10:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4313-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-8835"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "linux, linux-aws, linux-azure, linux-azure-5.3, linux-gcp, linux-gcp-5.3, linux-gke-5.3, linux-hwe, linux-kvm, linux-oracle, linux-oracle-5.3, linux-raspi2, linux-raspi2-5.3 vulnerability",
  "upstream": [
    "UBUNTU-CVE-2020-8835"
  ]
}



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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.