CVE-2009-2847 (GCVE-0-2009-2847)

Vulnerability from cvelistv5 – Published: 2009-08-18 20:41 – Updated: 2024-08-07 06:07
VLAI
Summary
The do_sigaltstack function in kernel/signal.c in Linux kernel 2.4 through 2.4.37 and 2.6 before 2.6.31-rc5, when running on 64-bit systems, does not clear certain padding bytes from a structure, which allows local users to obtain sensitive information from the kernel stack via the sigaltstack function.
Severity
No CVSS data available.
CWE
  • n/a
Assigner
mitre CNA under the mitre root
CNA scorecard E 28/100 over 2320 records in the last 180 days details
References
URL Tags
http://www.openwall.com/lists/oss-security/2009/08/04/1 mailing-listx_refsource_MLIST
https://bugzilla.redhat.com/show_bug.cgi?id=515392 x_refsource_CONFIRM
http://secunia.com/advisories/37471 third-party-advisoryx_refsource_SECUNIA
http://www.ubuntu.com/usn/USN-852-1 vendor-advisoryx_refsource_UBUNTU
http://rhn.redhat.com/errata/RHSA-2009-1243.html vendor-advisoryx_refsource_REDHAT
http://secunia.com/advisories/36759 third-party-advisoryx_refsource_SECUNIA
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https://oval.cisecurity.org/repository/search/def… vdb-entrysignaturex_refsource_OVAL
http://www.securityfocus.com/archive/1/507985/100… mailing-listx_refsource_BUGTRAQ
http://secunia.com/advisories/36562 third-party-advisoryx_refsource_SECUNIA
https://www.redhat.com/archives/fedora-package-an… vendor-advisoryx_refsource_FEDORA
http://git.kernel.org/?p=linux/kernel/git/torvald… x_refsource_CONFIRM
https://oval.cisecurity.org/repository/search/def… vdb-entrysignaturex_refsource_OVAL
http://www.exploit-db.com/exploits/9352 exploitx_refsource_EXPLOIT-DB
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http://secunia.com/advisories/37105 third-party-advisoryx_refsource_SECUNIA
http://secunia.com/advisories/36136 third-party-advisoryx_refsource_SECUNIA
Date Public
2009-08-01 00:00
Show details on NVD website
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        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "The do_sigaltstack function in kernel/signal.c in Linux kernel 2.4 through 2.4.37 and 2.6 before 2.6.31-rc5, when running on 64-bit systems, does not clear certain padding bytes from a structure, which allows local users to obtain sensitive information from the kernel stack via the sigaltstack function."
          },
          {
            "lang": "es",
            "value": "La funci\u00f3n do_sigaltstack en kernel/signal.c en el kernel de Linux 2.6 antes de 2.6.31-RC5, cuando se ejecuta en sistemas de 64 bits, no limpia algunos octetos de relleno de una estructura, lo que permite a usuarios locales obtener informaci\u00f3n sensible de la pila del n\u00facleo a trav\u00e9s de la funci\u00f3n sigaltstack."
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        "id": "CVE-2009-2847",
        "lastModified": "2026-04-23T00:35:47.467",
        "metrics": {
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            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
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                "accessVector": "LOCAL",
                "authentication": "NONE",
                "availabilityImpact": "NONE",
                "baseScore": 4.9,
                "confidentialityImpact": "COMPLETE",
                "integrityImpact": "NONE",
                "vectorString": "AV:L/AC:L/Au:N/C:C/I:N/A:N",
                "version": "2.0"
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              "exploitabilityScore": 3.9,
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              "obtainOtherPrivilege": false,
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              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
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        "published": "2009-08-18T21:00:00.377",
        "references": [
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          },
          {
            "source": "cve@mitre.org",
            "url": "http://www.vmware.com/security/advisories/VMSA-2009-0016.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://www.vupen.com/english/advisories/2009/3316"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Patch"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=515392"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10637"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8405"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://www.redhat.com/archives/fedora-package-announce/2009-August/msg01256.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=0083fc2c50e6c5127c2802ad323adf8143ab7856"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://rhn.redhat.com/errata/RHSA-2009-1243.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://secunia.com/advisories/36136"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://secunia.com/advisories/36501"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://secunia.com/advisories/36562"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://secunia.com/advisories/36759"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://secunia.com/advisories/37105"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://secunia.com/advisories/37471"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.exploit-db.com/exploits/9352"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2009/08/04/1"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2009/08/05/1"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.openwall.com/lists/oss-security/2009/08/26/2"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.redhat.com/support/errata/RHSA-2009-1438.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.securityfocus.com/archive/1/507985/100/0/threaded"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.ubuntu.com/usn/USN-852-1"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.vmware.com/security/advisories/VMSA-2009-0016.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.vupen.com/english/advisories/2009/3316"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=515392"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10637"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8405"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://www.redhat.com/archives/fedora-package-announce/2009-August/msg01256.html"
          }
        ],
        "sourceIdentifier": "cve@mitre.org",
        "vendorComments": [
          {
            "comment": "This issue has been rated as having moderate security impact. It was addressed in Red Hat Enterprise Linux 4, 5 and Red Hat Enterprise MRG:\nhttp://rhn.redhat.com/cve/CVE-2009-2847.html\n\nThis issue is not planned to be fixed in Red Hat Enterprise Linux 3, due to this product being in Production 3 of its maintenance life-cycle, where only qualified security errata of important or critical impact are addressed.  For further information about Errata Support Policy, visit: http://www.redhat.com/security/updates/errata/",
            "lastModified": "2009-09-15T00:00:00",
            "organization": "Red Hat"
          }
        ],
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "NVD-CWE-noinfo"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T13:10:54+00:00",
      "cve": "CVE-2009-2847",
      "id": "CVE-2009-2847",
      "initial_release_date": "2009-07-31T00:00:00+00:00",
      "product_status:fixed": "367",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: information leak in sigaltstack",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2009/cve-2009-2847.json",
      "version": "3"
    }
  }
}



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