FKIE_CVE-2012-2127

Vulnerability from fkie_nvd - Published: 2012-06-21 23:55 - Updated: 2026-06-16 23:41
Severity
Summary
fs/proc/root.c in the procfs implementation in the Linux kernel before 3.2 does not properly interact with CLONE_NEWPID clone system calls, which allows remote attackers to cause a denial of service (reference leak and memory consumption) by making many connections to a daemon that uses PID namespaces to isolate clients, as demonstrated by vsftpd.
References
secalert@redhat.comhttp://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=905ad269c55fc62bee3da29f7b1d1efeba8aa1e1
secalert@redhat.comhttp://ubuntu.com/usn/usn-1607-1
secalert@redhat.comhttp://www.kernel.org/pub/linux/kernel/v3.x/
secalert@redhat.comhttp://www.kernel.org/pub/linux/kernel/v3.x/patch-3.2.bz2Patch
secalert@redhat.comhttp://www.openwall.com/lists/oss-security/2012/04/20/25Exploit
secalert@redhat.comhttp://www.openwall.com/lists/oss-security/2012/04/22/1
secalert@redhat.comhttp://www.securityfocus.com/bid/55774
secalert@redhat.comhttp://www.ubuntu.com/usn/USN-1594-1
secalert@redhat.comhttps://bugzilla.novell.com/show_bug.cgi?id=757783Exploit
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=815188Exploit
secalert@redhat.comhttps://github.com/torvalds/linux/commit/905ad269c55fc62bee3da29f7b1d1efeba8aa1e1Exploit, Patch
af854a3a-2127-422b-91ae-364da2661108http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=905ad269c55fc62bee3da29f7b1d1efeba8aa1e1
af854a3a-2127-422b-91ae-364da2661108http://ubuntu.com/usn/usn-1607-1
af854a3a-2127-422b-91ae-364da2661108http://www.kernel.org/pub/linux/kernel/v3.x/
af854a3a-2127-422b-91ae-364da2661108http://www.kernel.org/pub/linux/kernel/v3.x/patch-3.2.bz2Patch
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2012/04/20/25Exploit
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2012/04/22/1
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/55774
af854a3a-2127-422b-91ae-364da2661108http://www.ubuntu.com/usn/USN-1594-1
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.novell.com/show_bug.cgi?id=757783Exploit
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=815188Exploit
af854a3a-2127-422b-91ae-364da2661108https://github.com/torvalds/linux/commit/905ad269c55fc62bee3da29f7b1d1efeba8aa1e1Exploit, Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel 3.1.1
linux linux_kernel 3.1.2
linux linux_kernel 3.1.3
linux linux_kernel 3.1.4
linux linux_kernel 3.1.5
linux linux_kernel 3.1.6
linux linux_kernel 3.1.7
linux linux_kernel 3.1.8
linux linux_kernel 3.1.9
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
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              "versionEndIncluding": "3.1.10",
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "fs/proc/root.c in the procfs implementation in the Linux kernel before 3.2 does not properly interact with CLONE_NEWPID clone system calls, which allows remote attackers to cause a denial of service (reference leak and memory consumption) by making many connections to a daemon that uses PID namespaces to isolate clients, as demonstrated by vsftpd."
    },
    {
      "lang": "es",
      "value": "fs/proc/root.c en las implementaciones de procfs del kernel de Linux anteriores a v3.2 no interactua adecuadamente con las llamadas al sistema de CLONE_NEWPID, lo que permite a atacantes remotos provocar una denegaci\u00f3n de servicio (p\u00e9rdida de referencia y consumo excesivo de memoria), haciendo muchas conexiones a un demonio que usa namespaces PID para aislar a los clientes, como lo demuestra vsftpd."
    }
  ],
  "id": "CVE-2012-2127",
  "lastModified": "2026-06-16T23:41:02.737",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ]
  },
  "published": "2012-06-21T23:55:02.880",
  "references": [
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      "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=905ad269c55fc62bee3da29f7b1d1efeba8aa1e1"
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          "lang": "en",
          "value": "CWE-119"
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      "source": "nvd@nist.gov",
      "type": "Primary"
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}



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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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