CVE-2019-19767 (GCVE-0-2019-19767)

Vulnerability from cvelistv5 – Published: 2019-12-12 19:39 – Updated: 2024-08-05 02:25
VLAI
Summary
The Linux kernel before 5.4.2 mishandles ext4_expand_extra_isize, as demonstrated by use-after-free errors in __ext4_expand_extra_isize and ext4_xattr_set_entry, related to fs/ext4/inode.c and fs/ext4/super.c, aka CID-4ea99936a163.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE
  • n/a
Assigner
References
Show details on NVD website
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            "value": "El kernel de Linux versi\u00f3n anterior a 5.4.2 maneja inapropiadamente la funci\u00f3n ext4_expand_extra_isize, como es demostrado por un error de uso de la memoria previamente liberada en las funciones __ext4_expand_extra_isize y ext4_xattr_set_entry, relacionadas con los archivos fs/ext4/inode.c y fs/ext4/super.c, tambi\u00e9n se conoce como CID-4ea99936a163."
          }
        ],
        "id": "CVE-2019-19767",
        "lastModified": "2024-11-21T04:35:20.580",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "MEDIUM",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 4.3,
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
                "version": "2.0"
              },
              "exploitabilityScore": 8.6,
              "impactScore": 2.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": true
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2019-12-12T20:15:17.583",
        "references": [
          {
            "source": "cve@mitre.org",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Exploit",
              "Issue Tracking",
              "Vendor Advisory"
            ],
            "url": "https://bugzilla.kernel.org/show_bug.cgi?id=205609"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Issue Tracking",
              "Vendor Advisory"
            ],
            "url": "https://bugzilla.kernel.org/show_bug.cgi?id=205707"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Release Notes",
              "Vendor Advisory"
            ],
            "url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.2"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4ea99936a1630f51fc3a2d61a58ec4a1c4b7d55a"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://github.com/torvalds/linux/commit/4ea99936a1630f51fc3a2d61a58ec4a1c4b7d55a"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://security.netapp.com/advisory/ntap-20200103-0001/"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://usn.ubuntu.com/4258-1/"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://usn.ubuntu.com/4284-1/"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://usn.ubuntu.com/4287-1/"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://usn.ubuntu.com/4287-2/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Exploit",
              "Issue Tracking",
              "Vendor Advisory"
            ],
            "url": "https://bugzilla.kernel.org/show_bug.cgi?id=205609"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Issue Tracking",
              "Vendor Advisory"
            ],
            "url": "https://bugzilla.kernel.org/show_bug.cgi?id=205707"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Release Notes",
              "Vendor Advisory"
            ],
            "url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.2"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4ea99936a1630f51fc3a2d61a58ec4a1c4b7d55a"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://github.com/torvalds/linux/commit/4ea99936a1630f51fc3a2d61a58ec4a1c4b7d55a"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://security.netapp.com/advisory/ntap-20200103-0001/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://usn.ubuntu.com/4258-1/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://usn.ubuntu.com/4284-1/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://usn.ubuntu.com/4287-1/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://usn.ubuntu.com/4287-2/"
          }
        ],
        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-416"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T11:58:50+00:00",
      "cve": "CVE-2019-19767",
      "id": "CVE-2019-19767",
      "initial_release_date": "2019-11-07T00:00:00+00:00",
      "product_status:fixed": "379",
      "product_status:known_affected": "12",
      "product_status:known_not_affected": "16",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: use-after-free in __ext4_expand_extra_isize and ext4_xattr_set_entry related to fs/ext4/inode.c and fs/ext4/super.c",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2019/cve-2019-19767.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-02T02:33:48Z",
      "cve": "CVE-2019-19767",
      "id": "CVE-2019-19767",
      "initial_release_date": "2023-02-15T04:05:53Z",
      "product_status:known_affected": "463",
      "product_status:known_not_affected": "100",
      "product_status:recommended": "1460",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2019-19767",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2019-19767.json",
      "version": "51"
    }
  }
}



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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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.