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usn-4343-1
Vulnerability from osv_ubuntu
Published
2020-04-28 23:27
Modified
2026-06-03 10:45
Summary
linux vulnerability
Details

Al Viro discovered that the Linux kernel for s390x systems did not properly perform page table upgrades for kernel sections that use secondary address mode. A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code.


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                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
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      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "linux",
        "purl": "pkg:deb/ubuntu/linux@5.4.0-28.32?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.4.0-28.32"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.3.0-18.19",
        "5.3.0-24.26",
        "5.4.0-9.12",
        "5.4.0-18.22",
        "5.4.0-21.25",
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        "5.4.0-25.29",
        "5.4.0-26.30"
      ]
    }
  ],
  "aliases": [],
  "details": "Al Viro discovered that the Linux kernel for s390x systems did not properly\nperform page table upgrades for kernel sections that use secondary address\nmode. A local attacker could use this to cause a denial of service (system\ncrash) or execute arbitrary code.\n",
  "id": "USN-4343-1",
  "modified": "2026-06-03T10:45:21Z",
  "published": "2020-04-28T23:27:12Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4343-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-11884"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "linux vulnerability",
  "upstream": [
    "UBUNTU-CVE-2020-11884"
  ]
}



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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

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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.
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