FKIE_CVE-2006-5173

Vulnerability from fkie_nvd - Published: 2006-10-17 22:07 - Updated: 2026-06-16 22:30
Severity
Summary
Linux kernel does not properly save or restore EFLAGS during a context switch, or reset the flags when creating new threads, which allows local users to cause a denial of service (process crash), as demonstrated using a process that sets the Alignment Check flag (EFLAGS 0x40000), which triggers a SIGBUS in other processes that have an unaligned access.
References
cve@mitre.orghttp://kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=47a5c6fa0e204a2b63309c648bb2fde36836c826
cve@mitre.orghttp://secunia.com/advisories/23361Broken Link
cve@mitre.orghttp://secunia.com/advisories/23384Broken Link
cve@mitre.orghttp://secunia.com/advisories/23474Broken Link
cve@mitre.orghttp://secunia.com/advisories/23593Broken Link
cve@mitre.orghttp://secunia.com/advisories/25691Broken Link
cve@mitre.orghttp://www.mandriva.com/security/advisories?name=MDKSA-2007:002Broken Link
cve@mitre.orghttp://www.novell.com/linux/security/advisories/2006_79_kernel.htmlBroken Link
cve@mitre.orghttp://www.securityfocus.com/archive/1/471457Third Party Advisory, VDB Entry
cve@mitre.orghttp://www.securityfocus.com/bid/21851Third Party Advisory, VDB Entry
cve@mitre.orghttp://www.ubuntu.com/usn/usn-395-1Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=47a5c6fa0e204a2b63309c648bb2fde36836c826
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/23361Broken Link
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/23384Broken Link
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/23474Broken Link
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/23593Broken Link
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/25691Broken Link
af854a3a-2127-422b-91ae-364da2661108http://www.mandriva.com/security/advisories?name=MDKSA-2007:002Broken Link
af854a3a-2127-422b-91ae-364da2661108http://www.novell.com/linux/security/advisories/2006_79_kernel.htmlBroken Link
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/archive/1/471457Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/21851Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://www.ubuntu.com/usn/usn-395-1Third Party Advisory
Impacted products
Vendor Product Version
linux linux_kernel *
canonical ubuntu_linux 5.10
canonical ubuntu_linux 6.06
canonical ubuntu_linux 6.10
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
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              "matchCriteriaId": "FAC786C1-AE8C-4376-9CA3-F1DF4021E6D2",
              "versionEndIncluding": "2.6.19",
              "versionStartIncluding": "2.4.0",
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          "operator": "OR"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Linux kernel does not properly save or restore EFLAGS during a context switch, or reset the flags when creating new threads, which allows local users to cause a denial of service (process crash), as demonstrated using a process that sets the Alignment Check flag (EFLAGS 0x40000), which triggers a SIGBUS in other processes that have an unaligned access."
    },
    {
      "lang": "es",
      "value": "El n\u00facleo de Linux no guarda o restaura adecuadamente EFLAGS durante un cambio de contexto, o reinicia las banderas al crear nuevos hilos, lo cual permite a usuarios locales provocar una denegaci\u00f3n de servicio (ca\u00edda de proceso), como ha sido demostrado usando un proceso que establece la bandera Alignment Check (EFLAGS 0x40000), lo cual dispara un SIGBUS en otros procesos que tienen acceso no alineado."
    }
  ],
  "id": "CVE-2006-5173",
  "lastModified": "2026-06-16T22:30:38.563",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 2.1,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ]
  },
  "published": "2006-10-17T22:07:00.000",
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      "url": "http://kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=47a5c6fa0e204a2b63309c648bb2fde36836c826"
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  "sourceIdentifier": "cve@mitre.org",
  "vendorComments": [
    {
      "comment": "Not Vulnerable.  This flaw only affects kernel versions 2.6.14 to 2.6.18.  Red Hat Enterprise Linux 2.1, 3, and 4 does not ship with a vulnerable kernel version.",
      "lastModified": "2006-11-03T00:00:00",
      "organization": "Red Hat"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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