usn-4946-1
Vulnerability from osv_ubuntu
Published
2021-05-11 21:53
Modified
2026-06-29 10:52
Summary
linux, linux-aws, lnux-aws-hwe, linux-azure, inux-azure-4.15, linux-dell300x, linux-gcp, linux-hwe, linux-gcp-4.15, linux-kvm, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities
Details

It was discovered that the DRM subsystem in the Linux kernel contained double-free vulnerabilities. A privileged attacker could possibly use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-20292)

Olivier Benjamin, Norbert Manthey, Martin Mazein, and Jan H. Schönherr discovered that the Xen paravirtualization backend in the Linux kernel did not properly propagate errors to frontend drivers in some situations. An attacker in a guest VM could possibly use this to cause a denial of service (host domain crash). (CVE-2021-26930)

Jan Beulich discovered that multiple Xen backends in the Linux kernel did not properly handle certain error conditions under paravirtualization. An attacker in a guest VM could possibly use this to cause a denial of service (host domain crash). (CVE-2021-26931)

Jan Beulich discovered that the Xen netback backend in the Linux kernel did not properly handle certain error conditions under paravirtualization. An attacker in a guest VM could possibly use this to cause a denial of service (host domain crash). (CVE-2021-28038)

It was discovered that the Xen paravirtualization backend in the Linux kernel did not properly deallocate memory in some situations. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2021-28688)

It was discovered that the Freescale Gianfar Ethernet driver for the Linux kernel did not properly handle receive queue overrun when jumbo frames were enabled in some situations. An attacker could use this to cause a denial of service (system crash). (CVE-2021-29264)

It was discovered that the USB/IP driver in the Linux kernel contained race conditions during the update of local and shared status. An attacker could use this to cause a denial of service (system crash). (CVE-2021-29265)

It was discovered that a race condition existed in the netfilter subsystem of the Linux kernel when replacing tables. A local attacker could use this to cause a denial of service (system crash). (CVE-2021-29650)

Arnd Bergmann discovered that the video4linux subsystem in the Linux kernel did not properly deallocate memory in some situations. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2021-30002)


{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-20292",
              "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": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-26930",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-26931",
              "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"
                }
              ]
            },
            {
              "id": "CVE-2021-28038",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-28688",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-29264",
              "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-2021-29265",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-29650",
              "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-2021-30002",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:14.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
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          },
          {
            "binary_name": "linux-buildinfo-4.15.0-1114-azure",
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          {
            "binary_name": "linux-cloud-tools-4.15.0-1114-azure",
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            "binary_name": "linux-modules-4.15.0-1114-azure",
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          },
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            "binary_name": "linux-modules-extra-4.15.0-1114-azure",
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          },
          {
            "binary_name": "linux-tools-4.15.0-1114-azure",
            "binary_version": "4.15.0-1114.127~14.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "linux-azure",
        "purl": "pkg:deb/ubuntu/linux-azure@4.15.0-1114.127~14.04.1?arch=source\u0026distro=trusty/esm"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
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        "4.15.0-1031.32~14.04.1",
        "4.15.0-1032.33~14.04.2",
        "4.15.0-1035.36~14.04.2",
        "4.15.0-1036.38~14.04.2",
        "4.15.0-1037.39~14.04.2",
        "4.15.0-1039.41~14.04.2",
        "4.15.0-1040.44~14.04.1",
        "4.15.0-1041.45~14.04.1",
        "4.15.0-1042.46~14.04.1",
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        "4.15.0-1046.50~14.04.1",
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        "4.15.0-1071.76~14.04.1",
        "4.15.0-1074.79~14.04.1",
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        "4.15.0-1083.93~14.04.1",
        "4.15.0-1089.99~14.04.1",
        "4.15.0-1091.101~14.04.1",
        "4.15.0-1092.102~14.04.1",
        "4.15.0-1093.103~14.04.1",
        "4.15.0-1095.105~14.04.1",
        "4.15.0-1096.106~14.04.1",
        "4.15.0-1098.109~14.04.1",
        "4.15.0-1100.111~14.04.1",
        "4.15.0-1102.113~14.04.1",
        "4.15.0-1103.114~14.04.1",
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        "4.15.0-1108.120~14.04.1",
        "4.15.0-1109.121~14.04.1",
        "4.15.0-1110.122~14.04.1",
        "4.15.0-1111.123~14.04.1",
        "4.15.0-1112.124~14.04.1",
        "4.15.0-1113.126~14.04.1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-20292",
              "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": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-26930",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-26931",
              "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"
                }
              ]
            },
            {
              "id": "CVE-2021-28038",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-28688",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-29264",
              "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-2021-29265",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-29650",
              "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-2021-30002",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "linux-aws-headers-4.15.0-1102",
            "binary_version": "4.15.0-1102.109~16.04.1"
          },
          {
            "binary_name": "linux-aws-hwe-cloud-tools-4.15.0-1102",
            "binary_version": "4.15.0-1102.109~16.04.1"
          },
          {
            "binary_name": "linux-aws-hwe-tools-4.15.0-1102",
            "binary_version": "4.15.0-1102.109~16.04.1"
          },
          {
            "binary_name": "linux-buildinfo-4.15.0-1102-aws",
            "binary_version": "4.15.0-1102.109~16.04.1"
          },
          {
            "binary_name": "linux-cloud-tools-4.15.0-1102-aws",
            "binary_version": "4.15.0-1102.109~16.04.1"
          },
          {
            "binary_name": "linux-headers-4.15.0-1102-aws",
            "binary_version": "4.15.0-1102.109~16.04.1"
          },
          {
            "binary_name": "linux-image-4.15.0-1102-aws",
            "binary_version": "4.15.0-1102.109~16.04.1"
          },
          {
            "binary_name": "linux-modules-4.15.0-1102-aws",
            "binary_version": "4.15.0-1102.109~16.04.1"
          },
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            "binary_name": "linux-modules-extra-4.15.0-1102-aws",
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          },
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            "binary_name": "linux-tools-4.15.0-1102-aws",
            "binary_version": "4.15.0-1102.109~16.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "linux-aws-hwe",
        "purl": "pkg:deb/ubuntu/linux-aws-hwe@4.15.0-1102.109~16.04.1?arch=source\u0026distro=esm-infra/xenial"
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    {
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            {
              "id": "CVE-2021-20292",
              "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": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-26930",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-26931",
              "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"
                }
              ]
            },
            {
              "id": "CVE-2021-28038",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-28688",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-29264",
              "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-2021-29265",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-29650",
              "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-2021-30002",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "linux-buildinfo-4.15.0-1099-gcp",
            "binary_version": "4.15.0-1099.112~16.04.1"
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          {
            "binary_name": "linux-gcp-headers-4.15.0-1099",
            "binary_version": "4.15.0-1099.112~16.04.1"
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        "4.15.0-1061.67",
        "4.15.0-1062.68",
        "4.15.0-1063.70",
        "4.15.0-1064.71",
        "4.15.0-1065.73",
        "4.15.0-1066.74",
        "4.15.0-1067.75",
        "4.15.0-1068.76",
        "4.15.0-1069.77",
        "4.15.0-1070.78"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-20292",
              "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": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-26930",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-26931",
              "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"
                }
              ]
            },
            {
              "id": "CVE-2021-28038",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-28688",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-29264",
              "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-2021-29265",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-29650",
              "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-2021-30002",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/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-4.15.0-1085-raspi2",
            "binary_version": "4.15.0-1085.90"
          },
          {
            "binary_name": "linux-headers-4.15.0-1085-raspi2",
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            "binary_version": "4.15.0-1085.90"
          },
          {
            "binary_name": "linux-modules-4.15.0-1085-raspi2",
            "binary_version": "4.15.0-1085.90"
          },
          {
            "binary_name": "linux-raspi2-headers-4.15.0-1085",
            "binary_version": "4.15.0-1085.90"
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          {
            "binary_name": "linux-raspi2-tools-4.15.0-1085",
            "binary_version": "4.15.0-1085.90"
          },
          {
            "binary_name": "linux-tools-4.15.0-1085-raspi2",
            "binary_version": "4.15.0-1085.90"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "linux-raspi2",
        "purl": "pkg:deb/ubuntu/linux-raspi2@4.15.0-1085.90?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.15.0-1085.90"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.13.0-1005.5",
        "4.13.0-1006.6",
        "4.13.0-1008.8",
        "4.15.0-1006.7",
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        "4.15.0-1021.23",
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        "4.15.0-1031.33",
        "4.15.0-1032.34",
        "4.15.0-1033.35",
        "4.15.0-1034.36",
        "4.15.0-1036.38",
        "4.15.0-1037.39",
        "4.15.0-1038.40",
        "4.15.0-1040.43",
        "4.15.0-1041.44",
        "4.15.0-1043.46",
        "4.15.0-1044.47",
        "4.15.0-1045.49",
        "4.15.0-1047.51",
        "4.15.0-1048.52",
        "4.15.0-1049.53",
        "4.15.0-1050.54",
        "4.15.0-1052.56",
        "4.15.0-1053.57",
        "4.15.0-1054.58",
        "4.15.0-1055.59",
        "4.15.0-1057.61",
        "4.15.0-1060.64",
        "4.15.0-1061.65",
        "4.15.0-1062.66",
        "4.15.0-1063.67",
        "4.15.0-1065.69",
        "4.15.0-1067.71",
        "4.15.0-1068.72",
        "4.15.0-1070.74",
        "4.15.0-1071.75",
        "4.15.0-1073.78",
        "4.15.0-1074.79",
        "4.15.0-1076.81",
        "4.15.0-1077.82",
        "4.15.0-1078.83",
        "4.15.0-1079.84",
        "4.15.0-1080.85",
        "4.15.0-1081.86",
        "4.15.0-1082.87",
        "4.15.0-1083.88",
        "4.15.0-1084.89"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-20292",
              "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": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-26930",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-26931",
              "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"
                }
              ]
            },
            {
              "id": "CVE-2021-28038",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-28688",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-29264",
              "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-2021-29265",
              "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": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-29650",
              "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-2021-30002",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/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-4.15.0-1102-snapdragon",
            "binary_version": "4.15.0-1102.111"
          },
          {
            "binary_name": "linux-headers-4.15.0-1102-snapdragon",
            "binary_version": "4.15.0-1102.111"
          },
          {
            "binary_name": "linux-image-4.15.0-1102-snapdragon",
            "binary_version": "4.15.0-1102.111"
          },
          {
            "binary_name": "linux-modules-4.15.0-1102-snapdragon",
            "binary_version": "4.15.0-1102.111"
          },
          {
            "binary_name": "linux-snapdragon-headers-4.15.0-1102",
            "binary_version": "4.15.0-1102.111"
          },
          {
            "binary_name": "linux-snapdragon-tools-4.15.0-1102",
            "binary_version": "4.15.0-1102.111"
          },
          {
            "binary_name": "linux-tools-4.15.0-1102-snapdragon",
            "binary_version": "4.15.0-1102.111"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "linux-snapdragon",
        "purl": "pkg:deb/ubuntu/linux-snapdragon@4.15.0-1102.111?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.15.0-1102.111"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.4.0-1077.82",
        "4.4.0-1078.83",
        "4.4.0-1079.84",
        "4.4.0-1081.86",
        "4.15.0-1053.57",
        "4.15.0-1054.58",
        "4.15.0-1055.59",
        "4.15.0-1057.62",
        "4.15.0-1058.64",
        "4.15.0-1060.66",
        "4.15.0-1062.69",
        "4.15.0-1064.71",
        "4.15.0-1065.72",
        "4.15.0-1066.73",
        "4.15.0-1067.74",
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        "4.15.0-1072.79",
        "4.15.0-1074.81",
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        "4.15.0-1080.87",
        "4.15.0-1081.88",
        "4.15.0-1083.91",
        "4.15.0-1084.92",
        "4.15.0-1086.94",
        "4.15.0-1087.95",
        "4.15.0-1089.98",
        "4.15.0-1090.99",
        "4.15.0-1091.100",
        "4.15.0-1093.102",
        "4.15.0-1094.103",
        "4.15.0-1095.104",
        "4.15.0-1096.105",
        "4.15.0-1097.106",
        "4.15.0-1098.107",
        "4.15.0-1099.108",
        "4.15.0-1100.109",
        "4.15.0-1101.110"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that the DRM subsystem in the Linux kernel contained\ndouble-free vulnerabilities. A privileged attacker could possibly use this\nto cause a denial of service (system crash) or possibly execute arbitrary\ncode. (CVE-2021-20292)\n\nOlivier Benjamin, Norbert Manthey, Martin Mazein, and Jan H. Sch\u00f6nherr\ndiscovered that the Xen paravirtualization backend in the Linux kernel did\nnot properly propagate errors to frontend drivers in some situations. An\nattacker in a guest VM could possibly use this to cause a denial of service\n(host domain crash). (CVE-2021-26930)\n\nJan Beulich discovered that multiple Xen backends in the Linux kernel did\nnot properly handle certain error conditions under paravirtualization. An\nattacker in a guest VM could possibly use this to cause a denial of service\n(host domain crash). (CVE-2021-26931)\n\nJan Beulich discovered that the Xen netback backend in the Linux kernel did\nnot properly handle certain error conditions under paravirtualization. An\nattacker in a guest VM could possibly use this to cause a denial of service\n(host domain crash). (CVE-2021-28038)\n\nIt was discovered that the Xen paravirtualization backend in the Linux\nkernel did not properly deallocate memory in some situations. A local\nattacker could use this to cause a denial of service (memory exhaustion).\n(CVE-2021-28688)\n\nIt was discovered that the Freescale Gianfar Ethernet driver for the Linux\nkernel did not properly handle receive queue overrun when jumbo frames were\nenabled in some situations. An attacker could use this to cause a denial of\nservice (system crash). (CVE-2021-29264)\n\nIt was discovered that the USB/IP driver in the Linux kernel contained race\nconditions during the update of local and shared status. An attacker could\nuse this to cause a denial of service (system crash). (CVE-2021-29265)\n\nIt was discovered that a race condition existed in the netfilter subsystem\nof the Linux kernel when replacing tables. A local attacker could use this\nto cause a denial of service (system crash). (CVE-2021-29650)\n\nArnd Bergmann discovered that the video4linux subsystem in the Linux kernel\ndid not properly deallocate memory in some situations. A local attacker\ncould use this to cause a denial of service (memory exhaustion).\n(CVE-2021-30002)\n",
  "id": "USN-4946-1",
  "modified": "2026-06-29T10:52:50Z",
  "published": "2021-05-11T21:53:16Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4946-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-20292"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-26930"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-26931"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-28038"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-28688"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-29264"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-29265"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-29650"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-30002"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "linux, linux-aws, lnux-aws-hwe, linux-azure, inux-azure-4.15, linux-dell300x, linux-gcp, linux-hwe, linux-gcp-4.15, linux-kvm, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2021-20292",
    "UBUNTU-CVE-2021-26930",
    "UBUNTU-CVE-2021-26931",
    "UBUNTU-CVE-2021-28038",
    "UBUNTU-CVE-2021-28688",
    "UBUNTU-CVE-2021-29264",
    "UBUNTU-CVE-2021-29265",
    "UBUNTU-CVE-2021-29650",
    "UBUNTU-CVE-2021-30002"
  ]
}



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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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