usn-3903-2
Vulnerability from osv_ubuntu
Published
2019-03-06 19:33
Modified
2026-02-10 04:41
Summary
linux-hwe, linux-azure vulnerabilities
Details

USN-3903-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.10. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 18.10 for Ubuntu 18.04 LTS.

Jason Wang discovered that the vhost net driver in the Linux kernel contained an out of bounds write vulnerability. An attacker in a guest virtual machine could use this to cause a denial of service (host system crash) or possibly execute arbitrary code in the host kernel. (CVE-2018-16880)

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)

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)


{
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              "severity": [
                {
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                  "type": "CVSS_V3"
                },
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                  "score": "CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
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            },
            {
              "id": "CVE-2018-18397",
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                },
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            {
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                },
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                }
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          {
            "binary_name": "usb-modules-4.18.0-16-generic-di",
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          },
          {
            "binary_name": "usb-modules-4.18.0-16-generic-lpae-di",
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          },
          {
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          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "linux-hwe",
        "purl": "pkg:deb/ubuntu/linux-hwe@4.18.0-16.17~18.04.1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-16.17~18.04.1"
            }
          ],
          "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"
      ]
    }
  ],
  "aliases": [],
  "details": "USN-3903-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.10.\nThis update provides the corresponding updates for the Linux Hardware\nEnablement (HWE) kernel from Ubuntu 18.10 for Ubuntu 18.04 LTS.\n\nJason Wang discovered that the vhost net driver in the Linux kernel\ncontained an out of bounds write vulnerability. An attacker in a guest\nvirtual machine could use this to cause a denial of service (host system\ncrash) or possibly execute arbitrary code in the host kernel.\n(CVE-2018-16880)\n\nJann 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\nJann Horn discovered a race condition in the fork() system call in the\nLinux kernel. A local attacker could use this to gain access to services\nthat cache authorizations. (CVE-2019-6133)\n",
  "id": "USN-3903-2",
  "modified": "2026-02-10T04:41:29Z",
  "published": "2019-03-06T19:33:05Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3903-2"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-16880"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-18397"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-6133"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "linux-hwe, linux-azure vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2018-16880",
    "UBUNTU-CVE-2018-18397",
    "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.

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Detection rules are retrieved from Rulezet.

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