FKIE_CVE-2009-4031
Vulnerability from fkie_nvd - Published: 2009-11-29 13:07 - Updated: 2026-06-16 23:12
Severity
Summary
The do_insn_fetch function in arch/x86/kvm/emulate.c in the x86 emulator in the KVM subsystem in the Linux kernel before 2.6.32-rc8-next-20091125 tries to interpret instructions that contain too many bytes to be valid, which allows guest OS users to cause a denial of service (increased scheduling latency) on the host OS via unspecified manipulations related to SMP support.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | 2.6.32 | |
| linux | linux_kernel | 2.6.32 | |
| linux | linux_kernel | 2.6.32 | |
| linux | linux_kernel | 2.6.32 | |
| linux | linux_kernel | 2.6.32 | |
| linux | linux_kernel | 2.6.32 | |
| linux | linux_kernel | 2.6.32 | |
| linux | linux_kernel | 2.6.32 |
{
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{
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"product": "n/a",
"vendor": "n/a",
"versions": [
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"status": "affected",
"version": "n/a"
}
]
}
],
"source": "secalert@redhat.com"
}
],
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"value": "The do_insn_fetch function in arch/x86/kvm/emulate.c in the x86 emulator in the KVM subsystem in the Linux kernel before 2.6.32-rc8-next-20091125 tries to interpret instructions that contain too many bytes to be valid, which allows guest OS users to cause a denial of service (increased scheduling latency) on the host OS via unspecified manipulations related to SMP support."
},
{
"lang": "es",
"value": "La funci\u00f3n do_insn_fetch en arch/x86/kvm/emulate.c en el emulador x86 KVM en el subsystem del kernel de Linux anterior a 2.6.32-rc8-next-20091125 intenta interpretar instrucciones que contienen demasiados bytes para ser v\u00e1lidas, lo que permite a un usuario invitado del sistema operativo provocar una denegaci\u00f3n de servicio (incremento de la latencia de la planificaci\u00f3n) en el sistema operativo anfitri\u00f3n a trav\u00e9s de manipulaciones no especificadas relacionadas con el soporte SMP."
}
],
"id": "CVE-2009-4031",
"lastModified": "2026-06-16T23:12:52.380",
"metrics": {
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{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 7.8,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 6.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
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"source": "nvd@nist.gov",
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"published": "2009-11-29T13:07:32.250",
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Nomenclature
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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