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usn-4006-2
Vulnerability from osv_ubuntu
Published
2019-06-04 22:54
Modified
2026-02-10 04:41
Summary
linux-hwe vulnerability
Details

USN-4006-1 fixed a vulnerability 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.

Federico Manuel Bento discovered that the Linux kernel did not properly apply Address Space Layout Randomization (ASLR) in some situations for setuid a.out binaries. A local attacker could use this to improve the chances of exploiting an existing vulnerability in a setuid a.out binary.

As a hardening measure, this update disables a.out support.


{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2019-11191",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "negligible",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
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      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "linux-hwe",
        "purl": "pkg:deb/ubuntu/linux-hwe@4.18.0-21.22~18.04.1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-21.22~18.04.1"
            }
          ],
          "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",
        "4.18.0-16.17~18.04.1",
        "4.18.0-17.18~18.04.1",
        "4.18.0-18.19~18.04.1",
        "4.18.0-20.21~18.04.1"
      ]
    }
  ],
  "aliases": [],
  "details": "USN-4006-1 fixed a vulnerability 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\nFederico Manuel Bento discovered that the Linux kernel did not properly\napply Address Space Layout Randomization (ASLR) in some situations for\nsetuid a.out binaries. A local attacker could use this to improve the\nchances of exploiting an existing vulnerability in a setuid a.out binary.\n\nAs a hardening measure, this update disables a.out support.\n",
  "id": "USN-4006-2",
  "modified": "2026-02-10T04:41:33Z",
  "published": "2019-06-04T22:54:41Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4006-2"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-11191"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "linux-hwe vulnerability",
  "upstream": [
    "UBUNTU-CVE-2019-11191"
  ]
}



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  • 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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