usn-3901-2
Vulnerability from osv_ubuntu
Published
2019-03-05 20:48
Modified
2026-02-10 04:41
Summary
linux-hwe, linux-aws-hwe, linux-azure, linux-gcp, linux-oracle vulnerabilities
Details

USN-3901-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 18.04 LTS for Ubuntu 16.04 LTS.

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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        "4.15.0-1008.10~16.04.1"
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  ],
  "aliases": [],
  "details": "USN-3901-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04\nLTS. This update provides the corresponding updates for the Linux\nHardware Enablement (HWE) kernel from Ubuntu 18.04 LTS for Ubuntu\n16.04 LTS.\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\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 the\nLinux kernel. A local attacker could use this to gain access to services\nthat cache authorizations. (CVE-2019-6133)\n",
  "id": "USN-3901-2",
  "modified": "2026-02-10T04:41:29Z",
  "published": "2019-03-05T20:48:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3901-2"
    },
    {
      "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-hwe, linux-aws-hwe, linux-azure, linux-gcp, linux-oracle 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.