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FKIE_CVE-2009-2847

Vulnerability from fkie_nvd - Published: 2009-08-18 21:00 - Updated: 2026-06-16 23:10
Severity
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.
References
cve@mitre.orghttp://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=0083fc2c50e6c5127c2802ad323adf8143ab7856
cve@mitre.orghttp://rhn.redhat.com/errata/RHSA-2009-1243.html
cve@mitre.orghttp://secunia.com/advisories/36136
cve@mitre.orghttp://secunia.com/advisories/36501
cve@mitre.orghttp://secunia.com/advisories/36562
cve@mitre.orghttp://secunia.com/advisories/36759
cve@mitre.orghttp://secunia.com/advisories/37105
cve@mitre.orghttp://secunia.com/advisories/37471
cve@mitre.orghttp://www.exploit-db.com/exploits/9352
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2009/08/04/1Patch
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2009/08/05/1Patch
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2009/08/26/2
cve@mitre.orghttp://www.redhat.com/support/errata/RHSA-2009-1438.html
cve@mitre.orghttp://www.securityfocus.com/archive/1/507985/100/0/threaded
cve@mitre.orghttp://www.ubuntu.com/usn/USN-852-1
cve@mitre.orghttp://www.vmware.com/security/advisories/VMSA-2009-0016.html
cve@mitre.orghttp://www.vupen.com/english/advisories/2009/3316
cve@mitre.orghttps://bugzilla.redhat.com/show_bug.cgi?id=515392Patch
cve@mitre.orghttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10637
cve@mitre.orghttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8405
cve@mitre.orghttps://www.redhat.com/archives/fedora-package-announce/2009-August/msg01256.html
af854a3a-2127-422b-91ae-364da2661108http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=0083fc2c50e6c5127c2802ad323adf8143ab7856
af854a3a-2127-422b-91ae-364da2661108http://rhn.redhat.com/errata/RHSA-2009-1243.html
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/36136
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/36501
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/36562
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/36759
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/37105
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/37471
af854a3a-2127-422b-91ae-364da2661108http://www.exploit-db.com/exploits/9352
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2009/08/04/1Patch
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2009/08/05/1Patch
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2009/08/26/2
af854a3a-2127-422b-91ae-364da2661108http://www.redhat.com/support/errata/RHSA-2009-1438.html
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/archive/1/507985/100/0/threaded
af854a3a-2127-422b-91ae-364da2661108http://www.ubuntu.com/usn/USN-852-1
af854a3a-2127-422b-91ae-364da2661108http://www.vmware.com/security/advisories/VMSA-2009-0016.html
af854a3a-2127-422b-91ae-364da2661108http://www.vupen.com/english/advisories/2009/3316
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=515392Patch
af854a3a-2127-422b-91ae-364da2661108https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10637
af854a3a-2127-422b-91ae-364da2661108https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8405
af854a3a-2127-422b-91ae-364da2661108https://www.redhat.com/archives/fedora-package-announce/2009-August/msg01256.html
Impacted products
Vendor Product Version
linux kernel 2.6.24.7
linux kernel 2.6.25.15
linux linux_kernel *
linux linux_kernel 2.6
linux linux_kernel 2.6.0
linux linux_kernel 2.6.1
linux linux_kernel 2.6.10
linux linux_kernel 2.6.11
linux linux_kernel 2.6.11.1
linux linux_kernel 2.6.11.2
linux linux_kernel 2.6.11.3
linux linux_kernel 2.6.11.4
linux linux_kernel 2.6.11.5
linux linux_kernel 2.6.11.6
linux linux_kernel 2.6.11.7
linux linux_kernel 2.6.11.8
linux linux_kernel 2.6.11.9
linux linux_kernel 2.6.11.10
linux linux_kernel 2.6.11.11
linux linux_kernel 2.6.11.12
linux linux_kernel 2.6.12
linux linux_kernel 2.6.12.1
linux linux_kernel 2.6.12.2
linux linux_kernel 2.6.12.3
linux linux_kernel 2.6.12.4
linux linux_kernel 2.6.12.5
linux linux_kernel 2.6.12.6
linux linux_kernel 2.6.13
linux linux_kernel 2.6.13.1
linux linux_kernel 2.6.13.2
linux linux_kernel 2.6.13.3
linux linux_kernel 2.6.13.4
linux linux_kernel 2.6.13.5
linux linux_kernel 2.6.14
linux linux_kernel 2.6.14.1
linux linux_kernel 2.6.14.2
linux linux_kernel 2.6.14.3
linux linux_kernel 2.6.14.4
linux linux_kernel 2.6.14.5
linux linux_kernel 2.6.14.6
linux linux_kernel 2.6.14.7
linux linux_kernel 2.6.15
linux linux_kernel 2.6.15.1
linux linux_kernel 2.6.15.2
linux linux_kernel 2.6.15.3
linux linux_kernel 2.6.15.4
linux linux_kernel 2.6.15.5
linux linux_kernel 2.6.15.6
linux linux_kernel 2.6.15.7
linux linux_kernel 2.6.16
linux linux_kernel 2.6.16.1
linux linux_kernel 2.6.16.2
linux linux_kernel 2.6.16.3
linux linux_kernel 2.6.16.10
linux linux_kernel 2.6.16.11
linux linux_kernel 2.6.16.12
linux linux_kernel 2.6.16.13
linux linux_kernel 2.6.16.14
linux linux_kernel 2.6.16.15
linux linux_kernel 2.6.16.16
linux linux_kernel 2.6.16.17
linux linux_kernel 2.6.16.18
linux linux_kernel 2.6.16.19
linux linux_kernel 2.6.16.20
linux linux_kernel 2.6.16.21
linux linux_kernel 2.6.16.22
linux linux_kernel 2.6.16.23
linux linux_kernel 2.6.16.24
linux linux_kernel 2.6.16.25
linux linux_kernel 2.6.16.26
linux linux_kernel 2.6.16.27
linux linux_kernel 2.6.16.28
linux linux_kernel 2.6.16.29
linux linux_kernel 2.6.16.30
linux linux_kernel 2.6.16.31
linux linux_kernel 2.6.16.31
linux linux_kernel 2.6.16.31
linux linux_kernel 2.6.16.31
linux linux_kernel 2.6.16.31
linux linux *

{
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    {
      "affectedData": [
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          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
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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."
    }
  ],
  "id": "CVE-2009-2847",
  "lastModified": "2026-06-16T23:10:20.737",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "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"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 6.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ]
  },
  "published": "2009-08-18T21:00:00.377",
  "references": [
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      "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=0083fc2c50e6c5127c2802ad323adf8143ab7856"
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  "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"
    }
  ]
}



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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.

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Detection rules are retrieved from Rulezet.

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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.


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