CVE-2007-1734

Status: ModifiedHigh (7.2)—Exploit

Severity7.2High · CVSS 2.0

Exploitation probability0.73 %higher than 54% of CVEs

Active exploitationNonot in the CISA catalog

Public exploitAvailablePublished on Exploit-DB

The DCCP support in the do_dccp_getsockopt function in net/dccp/proto.c in Linux kernel 2.6.20 and later does not verify the upper bounds of the optlen value, which allows local users running on certain architectures to read kernel memory or cause a denial of service (oops), a related issue to CVE-2007-1730.

CVSS

Base score: 7.2
Version: 2.0
Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.73 %
Percentile among all scored CVEs: 54
Score date: 10/21/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.

Published on Exploit-DB · Linux Kernel 2.6.20 with DCCP Support - Memory Disclosure (2) (3/28/2007)
Published on Exploit-DB · Linux Kernel 2.6.20 with DCCP Support - Memory Disclosure (1) (3/27/2007)

Affected technologies (1)

Linux — Linux Kernel

CWEs

NVD-CWE-Other

References

Show 10 references

Raw JSON (NVD)

Show

{
  "id": "CVE-2007-1734",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.2,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
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        }
      ]
    }
  ],
  "published": "2007-03-28T22:19:00.000",
  "references": [
    {
      "url": "http://securityreason.com/securityalert/2511",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/463969/100/0/threaded",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securitytracker.com/id?1017820",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/33274",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/43321",
      "source": "cve@mitre.org"
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    {
      "url": "http://securityreason.com/securityalert/2511",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/463969/100/0/threaded",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id?1017820",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/33274",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/43321",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The DCCP support in the do_dccp_getsockopt function in net/dccp/proto.c in Linux kernel 2.6.20 and later does not verify the upper bounds of the optlen value, which allows local users running on certain architectures to read kernel memory or cause a denial of service (oops), a related issue to CVE-2007-1730."
    },
    {
      "lang": "es",
      "value": "La ayuda DCCP en la función do_dccp_getsockopt en net/dccp/proto.c en Linux kernel 2.6.20 y posteriores no verifica los limites superiores en el valor optlenm, lo cual permite a usuarios locales funcionando bajo ciertas arquitecturas leer memoria del kernel o provocar denegación de servicio (oops), un asunto relacionado con CVE-2007-1730."
    }
  ],
  "lastModified": "2026-06-16T22:38:12.250",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:2.6.20:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C6940324-0383-4510-BA55-770E0A6B80B7"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:2.6.20.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1E3313D5-52E8-49B3-B145-170D9A26DA43"
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          "operator": "OR"
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  ],
  "vendorComments": [
    {
      "comment": "Not vulnerable. This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 2.1, 3, 4, or 5.",
      "lastModified": "2007-10-23T00:00:00",
      "organization": "Red Hat"
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}