CVE-2015-2666

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E2B0AD58-EA8D-45B5-8904-94271AEC93C8", "versionEndExcluding": "3.10.83", "versionStartIncluding": "3.9", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "5F50A53F-800B-4B6C-8D9F-15DF58421D96", "versionEndExcluding": "3.12.40", "versionStartIncluding": "3.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "4424F17D-6AD4-4FE9-A029-143963887D1A", "versionEndExcluding": "3.14.47", "versionStartIncluding": "3.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "7DC4BA70-B111-4D2E-BC78-6601CED68F08", "versionEndExcluding": "3.16.35", "versionStartIncluding": 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arch/x86/kernel/cpu/microcode/intel_early.c en el kernel de Linux anterior a 4.0 permite a atacantes dependientes de contexto ganar privilegios mediante la construcci\u00f3n de una cabecera de microc\u00f3digo manipulada y el aprovechamiento de privilegios root para acceso de escritura al initrd."}], "id": "CVE-2015-2666", "lastModified": "2026-06-17T00:24:31.457", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 6.9, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 3.4, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2015-05-27T10:59:04.813", "references": 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{"affected_release": [{"advisory": "RHSA-2015:1565", "cpe": "cpe:/a:redhat:rhel_extras_rt:7", "package": "kernel-rt-0:3.10.0-229.11.1.rt56.141.11.el7_1", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2015-08-05T00:00:00Z"}, {"advisory": "RHSA-2015:1534", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "kernel-0:3.10.0-229.11.1.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2015-08-06T00:00:00Z"}], "bugzilla": {"description": "kernel: execution in the early microcode loader", "id": "1204722", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1204722"}, "csaw": false, "cvss": {"cvss_base_score": "6.0", "cvss_scoring_vector": "AV:L/AC:H/Au:S/C:C/I:C/A:C", "status": "verified"}, "details": ["Stack-based buffer overflow in the get_matching_model_microcode function in arch/x86/kernel/cpu/microcode/intel_early.c in the Linux kernel before 4.0 allows context-dependent attackers to gain privileges by constructing a crafted microcode header and leveraging root privileges for write access to the initrd.", "A stack-based buffer overflow flaw was found in the Linux kernel's early load microcode functionality. On a system with UEFI Secure Boot enabled, a local, privileged user could use this flaw to increase their privileges to the kernel (ring0) level, bypassing intended restrictions in place."], "name": "CVE-2015-2666", "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:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/a:redhat:enterprise_mrg:2", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise MRG 2"}], "public_date": "2015-02-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2015-2666\nhttps://nvd.nist.gov/vuln/detail/CVE-2015-2666"], "statement": "This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 6 and Red Hat Enteprise MRG 2. Future kernel and kernel-rt updates for Red Hat Enterprise Linux 7 may address this issue.", "threat_severity": "Moderate"}

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