CVE-2014-8134

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reads a 16-bit value."}, {"lang": "es", "value": "La funci\u00f3n paravirt_ops_setup en arch/x86/kernel/kvm.c en el kernel de Linux hasta 3.18 utiliza una configuraci\u00f3n paravirt_enabled indebida para los kernels KVM invitados, lo que facilita a usuarios invitados del sistema operativo evadir el mecanismo de protecci\u00f3n ASLR a trav\u00e9s de una aplicaci\u00f3n manipulada que lee un valor de 16 bits."}], "id": "CVE-2014-8134", "lastModified": "2026-06-17T00:16:20.863", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 1.9, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:L/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 3.4, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": 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{"acknowledgement": "Red Hat would like to thank Andy Lutomirski for reporting this issue.", "affected_release": [{"advisory": "RHSA-2016:0855", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "kernel-0:2.6.32-642.el6", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2016-05-10T00:00:00Z"}], "bugzilla": {"description": "kernel: x86: espfix not working for 32-bit KVM paravirt guests", "id": "1172765", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1172765"}, "csaw": false, "cvss": {"cvss_base_score": "1.9", "cvss_scoring_vector": "AV:L/AC:M/Au:N/C:P/I:N/A:N", "status": "verified"}, "details": ["The paravirt_ops_setup function in arch/x86/kernel/kvm.c in the Linux kernel through 3.18 uses an improper paravirt_enabled setting for KVM guest kernels, which makes it easier for guest OS users to bypass the ASLR protection mechanism via a crafted application that reads a 16-bit value.", "It was found that the espfix functionality does not work for 32-bit KVM paravirtualized guests. A local, unprivileged guest user could potentially use this flaw to leak kernel stack addresses."], "name": "CVE-2014-8134", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/a:redhat:enterprise_mrg:2", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise MRG 2"}], "public_date": "2014-12-05T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2014-8134\nhttps://nvd.nist.gov/vuln/detail/CVE-2014-8134"], "statement": "This issue did not affect the Linux kernel packages as shipped with Red\nHat Enterprise Linux 5 and 7, and Red Hat Enterprise Linux MRG 2.", "threat_severity": "Low"}

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