usn-4679-1
Vulnerability from osv_ubuntu
Published
2021-01-06 03:24
Modified
2026-06-03 10:45
Summary
linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-gke-5.4, linux-hwe-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4 vulnerabilities
Details

It was discovered that the console keyboard driver in the Linux kernel contained a race condition. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2020-25656)

Minh Yuan discovered that the tty driver in the Linux kernel contained race conditions when handling fonts. A local attacker could possibly use this to expose sensitive information (kernel memory). (CVE-2020-25668)

Kiyin (尹亮) discovered that the perf subsystem in the Linux kernel did not properly deallocate memory in some situations. A privileged attacker could use this to cause a denial of service (kernel memory exhaustion). (CVE-2020-25704)

Jinoh Kang discovered that the Xen event channel infrastructure in the Linux kernel contained a race condition. An attacker in guest could possibly use this to cause a denial of service (dom0 crash). (CVE-2020-27675)

Daniel Axtens discovered that PowerPC RTAS implementation in the Linux kernel did not properly restrict memory accesses in some situations. A privileged local attacker could use this to arbitrarily modify kernel memory, potentially bypassing kernel lockdown restrictions. (CVE-2020-27777)

Minh Yuan discovered that the framebuffer console driver in the Linux kernel did not properly handle fonts in some conditions. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2020-28974)


{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-25656",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-25668",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-25704",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-27675",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-27777",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-28974",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "linux-aws-5.4-cloud-tools-5.4.0-1034",
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          {
            "binary_name": "linux-aws-5.4-headers-5.4.0-1034",
            "binary_version": "5.4.0-1034.35~18.04.1"
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          },
          {
            "binary_name": "linux-buildinfo-5.4.0-1034-aws",
            "binary_version": "5.4.0-1034.35~18.04.1"
          },
          {
            "binary_name": "linux-cloud-tools-5.4.0-1034-aws",
            "binary_version": "5.4.0-1034.35~18.04.1"
          },
          {
            "binary_name": "linux-headers-5.4.0-1034-aws",
            "binary_version": "5.4.0-1034.35~18.04.1"
          },
          {
            "binary_name": "linux-image-5.4.0-1034-aws",
            "binary_version": "5.4.0-1034.35~18.04.1"
          },
          {
            "binary_name": "linux-modules-5.4.0-1034-aws",
            "binary_version": "5.4.0-1034.35~18.04.1"
          },
          {
            "binary_name": "linux-modules-extra-5.4.0-1034-aws",
            "binary_version": "5.4.0-1034.35~18.04.1"
          },
          {
            "binary_name": "linux-tools-5.4.0-1034-aws",
            "binary_version": "5.4.0-1034.35~18.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "linux-aws-5.4",
        "purl": "pkg:deb/ubuntu/linux-aws-5.4@5.4.0-1034.35~18.04.1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.4.0-1034.35~18.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.4.0-1018.18~18.04.1",
        "5.4.0-1020.20~18.04.2",
        "5.4.0-1022.22~18.04.1",
        "5.4.0-1024.24~18.04.1",
        "5.4.0-1025.25~18.04.1",
        "5.4.0-1028.29~18.04.1",
        "5.4.0-1029.30~18.04.1",
        "5.4.0-1030.31~18.04.1",
        "5.4.0-1032.33~18.04.1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-25656",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-25668",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-25704",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-27675",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-27777",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-28974",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "linux-azure-5.4-cloud-tools-5.4.0-1035",
            "binary_version": "5.4.0-1035.36~18.04.1"
          },
          {
            "binary_name": "linux-azure-5.4-headers-5.4.0-1035",
            "binary_version": "5.4.0-1035.36~18.04.1"
          },
          {
            "binary_name": "linux-azure-5.4-tools-5.4.0-1035",
            "binary_version": "5.4.0-1035.36~18.04.1"
          },
          {
            "binary_name": "linux-buildinfo-5.4.0-1035-azure",
            "binary_version": "5.4.0-1035.36~18.04.1"
          },
          {
            "binary_name": "linux-cloud-tools-5.4.0-1035-azure",
            "binary_version": "5.4.0-1035.36~18.04.1"
          },
          {
            "binary_name": "linux-headers-5.4.0-1035-azure",
            "binary_version": "5.4.0-1035.36~18.04.1"
          },
          {
            "binary_name": "linux-image-unsigned-5.4.0-1035-azure",
            "binary_version": "5.4.0-1035.36~18.04.1"
          },
          {
            "binary_name": "linux-modules-5.4.0-1035-azure",
            "binary_version": "5.4.0-1035.36~18.04.1"
          },
          {
            "binary_name": "linux-modules-extra-5.4.0-1035-azure",
            "binary_version": "5.4.0-1035.36~18.04.1"
          },
          {
            "binary_name": "linux-tools-5.4.0-1035-azure",
            "binary_version": "5.4.0-1035.36~18.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "linux-azure-5.4",
        "purl": "pkg:deb/ubuntu/linux-azure-5.4@5.4.0-1035.36~18.04.1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.4.0-1035.36~18.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.4.0-1020.20~18.04.1",
        "5.4.0-1022.22~18.04.1",
        "5.4.0-1023.23~18.04.1",
        "5.4.0-1025.25~18.04.1",
        "5.4.0-1026.26~18.04.1",
        "5.4.0-1031.32~18.04.1",
        "5.4.0-1032.33~18.04.1",
        "5.4.0-1034.35~18.04.1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-25656",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-25668",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-25704",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-27675",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-27777",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-28974",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "linux-buildinfo-5.4.0-1033-gcp",
            "binary_version": "5.4.0-1033.35~18.04.1"
          },
          {
            "binary_name": "linux-gcp-5.4-headers-5.4.0-1033",
            "binary_version": "5.4.0-1033.35~18.04.1"
          },
          {
            "binary_name": "linux-gcp-5.4-tools-5.4.0-1033",
            "binary_version": "5.4.0-1033.35~18.04.1"
          },
          {
            "binary_name": "linux-headers-5.4.0-1033-gcp",
            "binary_version": "5.4.0-1033.35~18.04.1"
          },
          {
            "binary_name": "linux-image-unsigned-5.4.0-1033-gcp",
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          },
          {
            "binary_name": "linux-modules-5.4.0-1033-gcp",
            "binary_version": "5.4.0-1033.35~18.04.1"
          },
          {
            "binary_name": "linux-modules-extra-5.4.0-1033-gcp",
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          },
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            "binary_name": "linux-tools-5.4.0-1033-gcp",
            "binary_version": "5.4.0-1033.35~18.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "linux-gcp-5.4",
        "purl": "pkg:deb/ubuntu/linux-gcp-5.4@5.4.0-1033.35~18.04.1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.4.0-1033.35~18.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.4.0-1019.19~18.04.2",
        "5.4.0-1021.21~18.04.1",
        "5.4.0-1022.22~18.04.1",
        "5.4.0-1024.24~18.04.1",
        "5.4.0-1025.25~18.04.1",
        "5.4.0-1028.29~18.04.1",
        "5.4.0-1029.31~18.04.1",
        "5.4.0-1030.32~18.04.1",
        "5.4.0-1032.34~18.04.1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-25656",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-25668",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-25704",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-27675",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-27777",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-28974",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "linux-buildinfo-5.4.0-1033-gke",
            "binary_version": "5.4.0-1033.35~18.04.1"
          },
          {
            "binary_name": "linux-gke-5.4-headers-5.4.0-1033",
            "binary_version": "5.4.0-1033.35~18.04.1"
          },
          {
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            "binary_version": "5.4.0-1033.35~18.04.1"
          },
          {
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            "binary_version": "5.4.0-1033.35~18.04.1"
          },
          {
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          },
          {
            "binary_name": "linux-tools-5.4.0-1033-gke",
            "binary_version": "5.4.0-1033.35~18.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "linux-gke-5.4",
        "purl": "pkg:deb/ubuntu/linux-gke-5.4@5.4.0-1033.35~18.04.1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.4.0-1033.35~18.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.4.0-1025.25~18.04.1",
        "5.4.0-1027.28~18.04.1",
        "5.4.0-1029.31~18.04.1",
        "5.4.0-1030.32~18.04.1",
        "5.4.0-1032.34~18.04.1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-25656",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-25668",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-25704",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-27675",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-27777",
              "severity": [
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                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-27675",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-27777",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-28974",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "linux-buildinfo-5.4.0-1026-raspi",
            "binary_version": "5.4.0-1026.29"
          },
          {
            "binary_name": "linux-headers-5.4.0-1026-raspi",
            "binary_version": "5.4.0-1026.29"
          },
          {
            "binary_name": "linux-image-5.4.0-1026-raspi",
            "binary_version": "5.4.0-1026.29"
          },
          {
            "binary_name": "linux-modules-5.4.0-1026-raspi",
            "binary_version": "5.4.0-1026.29"
          },
          {
            "binary_name": "linux-raspi-headers-5.4.0-1026",
            "binary_version": "5.4.0-1026.29"
          },
          {
            "binary_name": "linux-raspi-tools-5.4.0-1026",
            "binary_version": "5.4.0-1026.29"
          },
          {
            "binary_name": "linux-tools-5.4.0-1026-raspi",
            "binary_version": "5.4.0-1026.29"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "linux-raspi",
        "purl": "pkg:deb/ubuntu/linux-raspi@5.4.0-1026.29?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.4.0-1026.29"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.4.0-1007.7",
        "5.4.0-1008.8",
        "5.4.0-1011.11",
        "5.4.0-1012.12",
        "5.4.0-1013.13",
        "5.4.0-1015.15",
        "5.4.0-1016.17",
        "5.4.0-1018.20",
        "5.4.0-1019.21",
        "5.4.0-1021.24",
        "5.4.0-1022.25",
        "5.4.0-1023.26",
        "5.4.0-1025.28"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that the console keyboard driver in the Linux kernel\ncontained a race condition. A local attacker could use this to expose\nsensitive information (kernel memory). (CVE-2020-25656)\n\nMinh Yuan discovered that the tty driver in the Linux kernel contained race\nconditions when handling fonts. A local attacker could possibly use this to\nexpose sensitive information (kernel memory). (CVE-2020-25668)\n\nKiyin (\u5c39\u4eae) discovered that the perf subsystem in the Linux kernel did\nnot properly deallocate memory in some situations. A privileged attacker\ncould use this to cause a denial of service (kernel memory exhaustion).\n(CVE-2020-25704)\n\nJinoh Kang discovered that the Xen event channel infrastructure in the\nLinux kernel contained a race condition. An attacker in guest could\npossibly use this to cause a denial of service (dom0 crash).\n(CVE-2020-27675)\n\nDaniel Axtens discovered that PowerPC RTAS implementation in the Linux\nkernel did not properly restrict memory accesses in some situations. A\nprivileged local attacker could use this to arbitrarily modify kernel\nmemory, potentially bypassing kernel lockdown restrictions.\n(CVE-2020-27777)\n\nMinh Yuan discovered that the framebuffer console driver in the Linux\nkernel did not properly handle fonts in some conditions. A local attacker\ncould use this to cause a denial of service (system crash) or possibly\nexpose sensitive information (kernel memory). (CVE-2020-28974)\n",
  "id": "USN-4679-1",
  "modified": "2026-06-03T10:45:23Z",
  "published": "2021-01-06T03:24:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4679-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-25656"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-25668"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-25704"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-27675"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-27777"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-28974"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-gke-5.4, linux-hwe-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4 vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2020-25656",
    "UBUNTU-CVE-2020-25668",
    "UBUNTU-CVE-2020-25704",
    "UBUNTU-CVE-2020-27675",
    "UBUNTU-CVE-2020-27777",
    "UBUNTU-CVE-2020-28974"
  ]
}



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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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