CVE-2009-2287

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v2.6.30, ejecutado sobre plataformas x86, no valida la \"page table root\" (ra\u00edz de tabla de p\u00e1ginas) en una llamada KVM_SET_SREGS, lo que permite a usuarios locales provocar una denegaci\u00f3n de servicio (cuelgue o ca\u00edda) a trav\u00e9s de un valor cr3 manipulado, lo que lanza un deferencia a puntero NULL en la funci\u00f3n gfn_to_rmap."}], "id": "CVE-2009-2287", "lastModified": "2026-06-16T23:09:08.467", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 4.9, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 6.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, 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This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 3, 4, and 5, and Red Hat Enterprise MRG.", "lastModified": "2009-07-01T00:00:00", "organization": "Red Hat"}], "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: KVM: x86: check for cr3 validity in ioctl_set_sregs", "id": "512324", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=512324"}, "csaw": false, "cvss": {"cvss_base_score": "7.2", "cvss_scoring_vector": "AV:L/AC:L/Au:N/C:C/I:C/A:C", "status": "draft"}, "cwe": "CWE-476", "details": ["The kvm_arch_vcpu_ioctl_set_sregs function in the KVM in Linux kernel 2.6 before 2.6.30, when running on x86 systems, does not validate the page table root in a KVM_SET_SREGS call, which allows local users to cause a denial of service (crash or hang) via a crafted cr3 value, which triggers a NULL pointer dereference in the gfn_to_rmap function."], "name": "CVE-2009-2287", "public_date": "2009-03-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2009-2287"], "statement": "Not vulnerable. This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 3, 4, and 5, and Red Hat Enterprise MRG.", "threat_severity": "Important"}

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