CVE-2009-0747 (GCVE-0-2009-0747)

Vulnerability from cvelistv5 – Published: 2009-02-27 17:00 – Updated: 2024-08-07 04:48
VLAI
Summary
The ext4_isize function in fs/ext4/ext4.h in the Linux kernel 2.6.27 before 2.6.27.19 and 2.6.28 before 2.6.28.7 uses the i_size_high structure member during operations on arbitrary types of files, which allows local users to cause a denial of service (CPU consumption and error-message flood) by attempting to mount a crafted ext4 filesystem.
Severity
No CVSS data available.
CWE
  • n/a
Assigner
mitre CNA under the mitre root
CNA scorecard E 29/100 over 2175 records in the last 180 days details
References
URL Tags
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http://www.vupen.com/english/advisories/2009/0509 vdb-entryx_refsource_VUPEN
http://secunia.com/advisories/37471 third-party-advisoryx_refsource_SECUNIA
http://rhn.redhat.com/errata/RHSA-2009-1243.html vendor-advisoryx_refsource_REDHAT
http://git.kernel.org/?p=linux/kernel/git/torvald… x_refsource_CONFIRM
http://www.vmware.com/security/advisories/VMSA-20… x_refsource_CONFIRM
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http://www.ubuntu.com/usn/usn-751-1 vendor-advisoryx_refsource_UBUNTU
https://oval.cisecurity.org/repository/search/def… vdb-entrysignaturex_refsource_OVAL
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http://secunia.com/advisories/36562 third-party-advisoryx_refsource_SECUNIA
https://oval.cisecurity.org/repository/search/def… vdb-entrysignaturex_refsource_OVAL
http://bugzilla.kernel.org/show_bug.cgi?id=12375 x_refsource_CONFIRM
http://secunia.com/advisories/34394 third-party-advisoryx_refsource_SECUNIA
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog… x_refsource_CONFIRM
http://www.vupen.com/english/advisories/2009/3316 vdb-entryx_refsource_VUPEN
Date Public
2009-02-20 00:00
Show details on NVD website
To clipboard 

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        ],
        "cveTags": [],
        "descriptions": [
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            "lang": "en",
            "value": "The ext4_isize function in fs/ext4/ext4.h in the Linux kernel 2.6.27 before 2.6.27.19 and 2.6.28 before 2.6.28.7 uses the i_size_high structure member during operations on arbitrary types of files, which allows local users to cause a denial of service (CPU consumption and error-message flood) by attempting to mount a crafted ext4 filesystem."
          },
          {
            "lang": "es",
            "value": "La funci\u00f3n ext4_isize en fs/ext4/ext4.h del kernel de Linux v2.6.27 anteriores a v2.6.27.19 y v2.6.28 anteriores a v2.6.28.7 utiliza el componente de la estructura i_size_high sobre tipos de ficheros de su elecci\u00f3n, lo que permite a usuarios locales provocar una denegaci\u00f3n de servicio (consumo de CPU y la inundaci\u00f3n de mensajes de error) por tratar de montar un sistema de archivos ext4 manipulado."
          }
        ],
        "id": "CVE-2009-0747",
        "lastModified": "2026-04-23T00:35:47.467",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "LOCAL",
                "authentication": "NONE",
                "availabilityImpact": "COMPLETE",
                "baseScore": 4.9,
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C",
                "version": "2.0"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 6.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ]
        },
        "published": "2009-02-27T17:30:09.953",
        "references": [
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            "source": "cve@mitre.org",
            "tags": [
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            "url": "http://bugzilla.kernel.org/show_bug.cgi?id=12375"
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        "vendorComments": [
          {
            "comment": "This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 2.1, 3, 4, and Red Hat Enterprise MRG. \n\nThis issue was addressed in Red Hat Enterprise Linux 5 by\nhttps://rhn.redhat.com/errata/RHSA-2009-1243.html",
            "lastModified": "2009-09-02T00:00:00",
            "organization": "Red Hat"
          }
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        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-399"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2025-11-21T13:12:58+00:00",
      "cve": "CVE-2009-0747",
      "id": "CVE-2009-0747",
      "initial_release_date": "2009-01-07T00:00:00+00:00",
      "product_status:fixed": "122",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ext4: ext4_isize() denial of service",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2009/cve-2009-0747.json",
      "version": "3"
    }
  }
}



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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.
  • 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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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    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.