usn-4884-1
Vulnerability from osv_ubuntu
Published
2021-03-20 04:51
Modified
2026-06-03 10:45
Summary
linux-oem-5.10 vulnerabilities
Details

Loris Reiff discovered that the BPF implementation in the Linux kernel did not properly validate attributes in the getsockopt BPF hook. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2021-20194)

It was discovered that the priority inheritance futex implementation in the Linux kernel contained a race condition, 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-2021-3347)

It was discovered that the network block device (nbd) driver in the Linux kernel contained a use-after-free vulnerability during device setup. A local attacker with access to the nbd device could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-3348)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-3347",
              "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": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-3348",
              "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-2021-20194",
              "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"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "linux-buildinfo-5.10.0-1017-oem",
            "binary_version": "5.10.0-1017.18"
          },
          {
            "binary_name": "linux-headers-5.10.0-1017-oem",
            "binary_version": "5.10.0-1017.18"
          },
          {
            "binary_name": "linux-image-unsigned-5.10.0-1017-oem",
            "binary_version": "5.10.0-1017.18"
          },
          {
            "binary_name": "linux-modules-5.10.0-1017-oem",
            "binary_version": "5.10.0-1017.18"
          },
          {
            "binary_name": "linux-oem-5.10-headers-5.10.0-1017",
            "binary_version": "5.10.0-1017.18"
          },
          {
            "binary_name": "linux-oem-5.10-tools-5.10.0-1017",
            "binary_version": "5.10.0-1017.18"
          },
          {
            "binary_name": "linux-oem-5.10-tools-host",
            "binary_version": "5.10.0-1017.18"
          },
          {
            "binary_name": "linux-tools-5.10.0-1017-oem",
            "binary_version": "5.10.0-1017.18"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "linux-oem-5.10",
        "purl": "pkg:deb/ubuntu/linux-oem-5.10@5.10.0-1017.18?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.10.0-1017.18"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.10.0-1008.9",
        "5.10.0-1011.12",
        "5.10.0-1013.14",
        "5.10.0-1014.15",
        "5.10.0-1016.17"
      ]
    }
  ],
  "aliases": [],
  "details": "Loris Reiff discovered that the BPF implementation in the Linux kernel did\nnot properly validate attributes in the getsockopt BPF hook. A local\nattacker could possibly use this to cause a denial of service (system\ncrash). (CVE-2021-20194)\n\nIt was discovered that the priority inheritance futex implementation in the\nLinux kernel contained a race condition, 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-2021-3347)\n\nIt was discovered that the network block device (nbd) driver in the Linux\nkernel contained a use-after-free vulnerability during device setup. A\nlocal attacker with access to the nbd device could use this to cause a\ndenial of service (system crash) or possibly execute arbitrary code.\n(CVE-2021-3348)\n",
  "id": "USN-4884-1",
  "modified": "2026-06-03T10:45:25Z",
  "published": "2021-03-20T04:51:03Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4884-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-3347"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-3348"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-20194"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "linux-oem-5.10 vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2021-3347",
    "UBUNTU-CVE-2021-3348",
    "UBUNTU-CVE-2021-20194"
  ]
}



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