FKIE_CVE-2009-3238

Vulnerability from fkie_nvd - Published: 2009-09-18 10:30 - Updated: 2026-06-16 23:11
Severity
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Summary
The get_random_int function in drivers/char/random.c in the Linux kernel before 2.6.30 produces insufficiently random numbers, which allows attackers to predict the return value, and possibly defeat protection mechanisms based on randomization, via vectors that leverage the function's tendency to "return the same value over and over again for long stretches of time."
References
cve@mitre.orghttp://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=8a0a9bd4db63bc45e3017bedeafbd88d0eb84d02Broken Link
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2009-11/msg00005.htmlMailing List
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.htmlMailing List
cve@mitre.orghttp://patchwork.kernel.org/patch/21766/Broken Link, Patch
cve@mitre.orghttp://secunia.com/advisories/37105Broken Link
cve@mitre.orghttp://secunia.com/advisories/37351Broken Link
cve@mitre.orghttp://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.30Broken Link, Exploit, Vendor Advisory
cve@mitre.orghttp://www.redhat.com/support/errata/RHSA-2009-1438.htmlBroken Link
cve@mitre.orghttp://www.ubuntu.com/usn/USN-852-1Third Party Advisory
cve@mitre.orghttps://bugzilla.redhat.com/show_bug.cgi?id=499785Issue Tracking, Permissions Required
cve@mitre.orghttps://bugzilla.redhat.com/show_bug.cgi?id=519692Issue Tracking, Permissions Required
cve@mitre.orghttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11168Broken Link
cve@mitre.orghttps://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03836en_usThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=8a0a9bd4db63bc45e3017bedeafbd88d0eb84d02Broken Link
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00005.htmlMailing List
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.htmlMailing List
af854a3a-2127-422b-91ae-364da2661108http://patchwork.kernel.org/patch/21766/Broken Link, Patch
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/37105Broken Link
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/37351Broken Link
af854a3a-2127-422b-91ae-364da2661108http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.30Broken Link, Exploit, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.redhat.com/support/errata/RHSA-2009-1438.htmlBroken Link
af854a3a-2127-422b-91ae-364da2661108http://www.ubuntu.com/usn/USN-852-1Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=499785Issue Tracking, Permissions Required
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=519692Issue Tracking, Permissions Required
af854a3a-2127-422b-91ae-364da2661108https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11168Broken Link
af854a3a-2127-422b-91ae-364da2661108https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03836en_usThird Party Advisory
Impacted products
Vendor Product Version
linux linux_kernel *
canonical ubuntu_linux 6.06
canonical ubuntu_linux 8.04
canonical ubuntu_linux 8.10
canonical ubuntu_linux 9.04
opensuse opensuse 11.0
suse linux_enterprise_desktop 10
suse linux_enterprise_server 10
To clipboard 

{
  "affected": [
    {
      "affectedData": [
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          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The get_random_int function in drivers/char/random.c in the Linux kernel before 2.6.30 produces insufficiently random numbers, which allows attackers to predict the return value, and possibly defeat protection mechanisms based on randomization, via vectors that leverage the function\u0027s tendency to \"return the same value over and over again for long stretches of time.\""
    },
    {
      "lang": "es",
      "value": "La funci\u00f3n get_random_int de drivers/char/random.c en el kernel de Linux anterior a v2.6.30, produce n\u00fameros que nos son suficientemente aleatorios, esto permite a los atacantes predecir el valor devuelto y permite que se puedan superar los mecanismos de protecci\u00f3n basados en la aleatoriedad, a trav\u00e9s de vectores que eleven la tendencia de la funci\u00f3n a \"devolver el mismo valor una y otra vez durante largos periodos de tiempo\"."
    }
  ],
  "id": "CVE-2009-3238",
  "lastModified": "2026-06-16T23:11:12.480",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 7.8,
          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:C/I:N/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 6.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
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    "cvssMetricV31": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
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        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  },
  "published": "2009-09-18T10:30:01.267",
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}



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