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CVE-2018-1092 (GCVE-0-2018-1092)

Vulnerability from cvelistv5 – Published: 2018-04-02 03:00 – Updated: 2024-08-05 03:51
VLAI
Summary
The ext4_iget function in fs/ext4/inode.c in the Linux kernel through 4.15.15 mishandles the case of a root directory with a zero i_links_count, which allows attackers to cause a denial of service (ext4_process_freed_data NULL pointer dereference and OOPS) via a crafted ext4 image.
Severity
5.5 (Medium)
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE
  • NULL pointer dereference
Assigner
References
URL Tags
https://usn.ubuntu.com/3676-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3678-2/ vendor-advisoryx_refsource_UBUNTU
https://access.redhat.com/errata/RHSA-2018:3083 vendor-advisoryx_refsource_REDHAT
http://openwall.com/lists/oss-security/2018/03/29/1 x_refsource_MISC
https://www.debian.org/security/2018/dsa-4187 vendor-advisoryx_refsource_DEBIAN
https://usn.ubuntu.com/3678-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3677-1/ vendor-advisoryx_refsource_UBUNTU
https://www.debian.org/security/2018/dsa-4188 vendor-advisoryx_refsource_DEBIAN
https://usn.ubuntu.com/3754-1/ vendor-advisoryx_refsource_UBUNTU
https://bugzilla.kernel.org/show_bug.cgi?id=199179 x_refsource_MISC
https://access.redhat.com/errata/RHSA-2018:2948 vendor-advisoryx_refsource_REDHAT
https://usn.ubuntu.com/3678-3/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3677-2/ vendor-advisoryx_refsource_UBUNTU
https://bugzilla.redhat.com/show_bug.cgi?id=1560777 x_refsource_MISC
https://usn.ubuntu.com/3676-2/ vendor-advisoryx_refsource_UBUNTU
https://git.kernel.org/pub/scm/linux/kernel/git/t… x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2018… mailing-listx_refsource_MLIST
https://access.redhat.com/errata/RHSA-2018:3096 vendor-advisoryx_refsource_REDHAT
https://usn.ubuntu.com/3678-4/ vendor-advisoryx_refsource_UBUNTU
https://bugzilla.kernel.org/show_bug.cgi?id=199275 x_refsource_MISC
Impacted products
Vendor Product Version CPE status
n/a Linux kernel through version 4.15 Affected: Linux kernel through version 4.15
Date Public
2018-04-01 00:00
Show details on NVD website
To clipboard 

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manipulada.\"}],\"metrics\":{\"cvssMetricV30\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.0\",\"vectorString\":\"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:N/I:N/A:C\",\"baseScore\":7.1,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"COMPLETE\"},\"baseSeverity\":\"HIGH\",\"exploitabilityScore\":8.6,\"impactScore\":6.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":true}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"4.15.15\",\"matchCriteriaId\":\"EA4F2AD9-993F-4246-B6F9-7723FF82AF6C\"}]}]}],\"references\":[{\"url\":\"http://openwall.com/lists/oss-security/2018/03/29/1\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://access.redhat.com/errata/RHSA-2018:2948\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2018:3083\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2018:3096\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://bugzilla.kernel.org/show_bug.cgi?id=199179\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Issue Tracking\"]},{\"url\":\"https://bugzilla.kernel.org/show_bug.cgi?id=199275\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Issue Tracking\"]},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=1560777\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=8e4b5eae5decd9dfe5a4ee369c22028f90ab4c44\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://usn.ubuntu.com/3676-1/\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://usn.ubuntu.com/3676-2/\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://usn.ubuntu.com/3677-1/\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://usn.ubuntu.com/3677-2/\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://usn.ubuntu.com/3678-1/\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://usn.ubuntu.com/3678-2/\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://usn.ubuntu.com/3678-3/\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://usn.ubuntu.com/3678-4/\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://usn.ubuntu.com/3754-1/\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://www.debian.org/security/2018/dsa-4187\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://www.debian.org/security/2018/dsa-4188\",\"source\":\"secalert@redhat.com\"},{\"url\":\"http://openwall.com/lists/oss-security/2018/03/29/1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing 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Advisory\"]},{\"url\":\"https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=8e4b5eae5decd9dfe5a4ee369c22028f90ab4c44\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://usn.ubuntu.com/3676-1/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://usn.ubuntu.com/3676-2/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://usn.ubuntu.com/3677-1/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://usn.ubuntu.com/3677-2/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://usn.ubuntu.com/3678-1/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://usn.ubuntu.com/3678-2/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://usn.ubuntu.com/3678-3/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://usn.ubuntu.com/3678-4/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://usn.ubuntu.com/3754-1/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.debian.org/security/2018/dsa-4187\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.debian.org/security/2018/dsa-4188\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T11:18:22+00:00",
      "cve": "CVE-2018-1092",
      "id": "CVE-2018-1092",
      "initial_release_date": "2018-03-22T00:00:00+00:00",
      "product_status:fixed": "248",
      "product_status:known_affected": "27",
      "product_status:known_not_affected": "41",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: NULL pointer dereference in ext4/mballoc.c:ext4_process_freed_data() when mounting crafted ext4 image",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2018/cve-2018-1092.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-31T08:54:02Z",
      "cve": "CVE-2018-1092",
      "id": "CVE-2018-1092",
      "initial_release_date": "2023-02-15T04:34:32Z",
      "product_status:known_affected": "40",
      "product_status:known_not_affected": "288",
      "product_status:recommended": "261",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2018-1092",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2018-1092.json",
      "version": "23"
    }
  }
}



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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.


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.