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CVE-2012-4565 (GCVE-0-2012-4565)

Vulnerability from cvelistv5 – Published: 2012-12-21 11:00 – Updated: 2024-08-06 20:42
VLAI
Summary
The tcp_illinois_info function in net/ipv4/tcp_illinois.c in the Linux kernel before 3.4.19, when the net.ipv4.tcp_congestion_control illinois setting is enabled, allows local users to cause a denial of service (divide-by-zero error and OOPS) by reading TCP stats.
Severity
No CVSS data available.
CWE
  • n/a
Assigner
References
URL Tags
http://git.kernel.org/?p=linux/kernel/git/torvald… x_refsource_CONFIRM
http://www.ubuntu.com/usn/USN-1644-1 vendor-advisoryx_refsource_UBUNTU
http://www.ubuntu.com/usn/USN-1645-1 vendor-advisoryx_refsource_UBUNTU
http://www.kernel.org/pub/linux/kernel/v3.x/Chang… x_refsource_CONFIRM
http://www.ubuntu.com/usn/USN-1647-1 vendor-advisoryx_refsource_UBUNTU
http://rhn.redhat.com/errata/RHSA-2012-1580.html vendor-advisoryx_refsource_REDHAT
http://www.ubuntu.com/usn/USN-1652-1 vendor-advisoryx_refsource_UBUNTU
https://github.com/torvalds/linux/commit/8f363b77… x_refsource_CONFIRM
https://bugzilla.redhat.com/show_bug.cgi?id=871848 x_refsource_CONFIRM
http://www.ubuntu.com/usn/USN-1646-1 vendor-advisoryx_refsource_UBUNTU
http://www.ubuntu.com/usn/USN-1651-1 vendor-advisoryx_refsource_UBUNTU
http://lists.fedoraproject.org/pipermail/package-… vendor-advisoryx_refsource_FEDORA
http://www.ubuntu.com/usn/USN-1648-1 vendor-advisoryx_refsource_UBUNTU
http://www.securityfocus.com/bid/56346 vdb-entryx_refsource_BID
http://www.openwall.com/lists/oss-security/2012/10/31/5 mailing-listx_refsource_MLIST
http://www.ubuntu.com/usn/USN-1649-1 vendor-advisoryx_refsource_UBUNTU
http://www.ubuntu.com/usn/USN-1650-1 vendor-advisoryx_refsource_UBUNTU
http://secunia.com/advisories/51409 third-party-advisoryx_refsource_SECUNIA
Date Public
2012-10-31 00:00
Show details on NVD website
To clipboard 

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            "value": "The tcp_illinois_info function in net/ipv4/tcp_illinois.c in the Linux kernel before 3.4.19, when the net.ipv4.tcp_congestion_control illinois setting is enabled, allows local users to cause a denial of service (divide-by-zero error and OOPS) by reading TCP stats."
          },
          {
            "lang": "es",
            "value": "La funci\u00f3n tcp_illinois_info en net/ipv4/tcp_illinois.c en el kernel de Linux antes de v3.4.19, cuando la opci\u00f3n net.ipv4.tcp_congestion_control illinois est\u00e1 habilitada, permite a usuarios locales provocar una denegaci\u00f3n de servicio (divisi\u00f3n por cero y ca\u00edda) mediante la lectura de estad\u00edsticas TCP.\r\n"
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        "metrics": {
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                "accessVector": "LOCAL",
                "authentication": "NONE",
                "availabilityImpact": "COMPLETE",
                "baseScore": 4.7,
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "vectorString": "AV:L/AC:M/Au:N/C:N/I:N/A:C",
                "version": "2.0"
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              "impactScore": 6.9,
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              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
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        "published": "2012-12-21T11:47:36.627",
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              {
                "lang": "en",
                "value": "CWE-189"
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    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T12:48:05+00:00",
      "cve": "CVE-2012-4565",
      "id": "CVE-2012-4565",
      "initial_release_date": "2012-10-31T00:00:00+00:00",
      "product_status:fixed": "457",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net: divide by zero in tcp algorithm illinois",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2012/cve-2012-4565.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-02T12:55:18Z",
      "cve": "CVE-2012-4565",
      "id": "CVE-2012-4565",
      "initial_release_date": "2023-02-15T05:44:28Z",
      "product_status:known_not_affected": "537",
      "product_status:recommended": "128",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2012-4565",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2012-4565.json",
      "version": "17"
    }
  }
}



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Tags
Taxonomy of the tags.





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.