usn-3901-1
Vulnerability from osv_ubuntu
Published
2019-03-05 20:44
Modified
2026-04-22 07:36
Summary
linux, linux-aws, linux-gcp, linux-kvm, linux-oem, linux-oracle, linux-raspi2 vulnerabilities
Details

Jann Horn discovered that the userfaultd implementation in the Linux kernel did not properly restrict access to certain ioctls. A local attacker could use this possibly to modify files. (CVE-2018-18397)

It was discovered that the crypto subsystem of the Linux kernel leaked uninitialized memory to user space in some situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2018-19854)

Jann Horn discovered a race condition in the fork() system call in the Linux kernel. A local attacker could use this to gain access to services that cache authorizations. (CVE-2019-6133)

References
To clipboard 

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              "severity": [
                {
                  "score": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2019-6133",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/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-4.15.0-1032-raspi2",
            "binary_version": "4.15.0-1032.34"
          },
          {
            "binary_name": "linux-headers-4.15.0-1032-raspi2",
            "binary_version": "4.15.0-1032.34"
          },
          {
            "binary_name": "linux-image-4.15.0-1032-raspi2",
            "binary_version": "4.15.0-1032.34"
          },
          {
            "binary_name": "linux-modules-4.15.0-1032-raspi2",
            "binary_version": "4.15.0-1032.34"
          },
          {
            "binary_name": "linux-raspi2-headers-4.15.0-1032",
            "binary_version": "4.15.0-1032.34"
          },
          {
            "binary_name": "linux-raspi2-tools-4.15.0-1032",
            "binary_version": "4.15.0-1032.34"
          },
          {
            "binary_name": "linux-tools-4.15.0-1032-raspi2",
            "binary_version": "4.15.0-1032.34"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "linux-raspi2",
        "purl": "pkg:deb/ubuntu/linux-raspi2@4.15.0-1032.34?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.15.0-1032.34"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.13.0-1005.5",
        "4.13.0-1006.6",
        "4.13.0-1008.8",
        "4.15.0-1006.7",
        "4.15.0-1009.10",
        "4.15.0-1010.11",
        "4.15.0-1011.12",
        "4.15.0-1012.13",
        "4.15.0-1013.14",
        "4.15.0-1017.18",
        "4.15.0-1018.19",
        "4.15.0-1020.22",
        "4.15.0-1021.23",
        "4.15.0-1022.24",
        "4.15.0-1024.26",
        "4.15.0-1026.28",
        "4.15.0-1027.29",
        "4.15.0-1028.30",
        "4.15.0-1029.31",
        "4.15.0-1030.32",
        "4.15.0-1031.33"
      ]
    }
  ],
  "aliases": [],
  "details": "Jann Horn discovered that the userfaultd implementation in the Linux kernel\ndid not properly restrict access to certain ioctls. A local attacker could\nuse this possibly to modify files. (CVE-2018-18397)\n\nIt was discovered that the crypto subsystem of the Linux kernel leaked\nuninitialized memory to user space in some situations. A local attacker\ncould use this to expose sensitive information (kernel memory).\n(CVE-2018-19854)\n\nJann Horn discovered a race condition in the fork() system call in\nthe Linux kernel. A local attacker could use this to gain access to\nservices that cache authorizations. (CVE-2019-6133)\n",
  "id": "USN-3901-1",
  "modified": "2026-04-22T07:36:36Z",
  "published": "2019-03-05T20:44:55Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3901-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-18397"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-19854"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-6133"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "linux, linux-aws, linux-gcp, linux-kvm, linux-oem, linux-oracle, linux-raspi2 vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2018-18397",
    "UBUNTU-CVE-2018-19854",
    "UBUNTU-CVE-2019-6133"
  ]
}



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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.


Detection rules are retrieved from Rulezet.