CVE-2011-4621

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "secalert@redhat.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "76630B45-B590-4651-972E-F938A83010C0", "versionEndExcluding": "2.6.37", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The Linux kernel before 2.6.37 does not properly implement a certain clock-update optimization, which allows local users to cause a denial of service (system hang) via an application that executes code in a loop."}, {"lang": "es", "value": "El kernel de Linux antes de v2.6.37 no aplica la optimizaci\u00f3n de una actualizaci\u00f3n de reloj, lo que permite a usuarios locales provocar una denegaci\u00f3n de servicio (bloqueo del sistema) a trav\u00e9s de una aplicaci\u00f3n que ejecuta c\u00f3digo en un bucle."}], "id": "CVE-2011-4621", "lastModified": "2026-06-16T23:35:09.713", "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}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2012-05-17T11:00:35.617", "references": [{"source": "secalert@redhat.com", "tags": ["Broken Link"], "url": "http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.37"}, {"source": "secalert@redhat.com", "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f26f9aff6aaf67e9a430d16c266f91b13a5bff64"}, {"source": "secalert@redhat.com", "tags": ["Exploit", "Mailing List", "Patch", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2011/12/21/6"}, {"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=769711"}, {"source": "secalert@redhat.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/torvalds/linux/commit/f26f9aff6aaf67e9a430d16c266f91b13a5bff64"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Broken Link"], "url": "http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.37"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f26f9aff6aaf67e9a430d16c266f91b13a5bff64"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Mailing List", "Patch", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2011/12/21/6"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=769711"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/torvalds/linux/commit/f26f9aff6aaf67e9a430d16c266f91b13a5bff64"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-835"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank Masaki Tachibana for reporting this issue.", "affected_release": [{"advisory": "RHSA-2011:1849", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "kernel-0:2.6.32-220.2.1.el6", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2011-12-22T00:00:00Z"}], "bugzilla": {"description": "kernel: tight loop and no preemption can cause system stall", "id": "769711", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=769711"}, "csaw": false, "cvss": {"cvss_base_score": "4.7", "cvss_scoring_vector": "AV:L/AC:M/Au:N/C:N/I:N/A:C", "status": "verified"}, "details": ["The Linux kernel before 2.6.37 does not properly implement a certain clock-update optimization, which allows local users to cause a denial of service (system hang) via an application that executes code in a loop."], "name": "CVE-2011-4621", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:4", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 4"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/a:redhat:enterprise_mrg:2", "fix_state": "Not affected", "package_name": "realtime-kernel", "product_name": "Red Hat Enterprise MRG 2"}], "public_date": "2010-11-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2011-4621\nhttps://nvd.nist.gov/vuln/detail/CVE-2011-4621"], "statement": "This issue does not affect Red Hat Enterprise Linux 5 and Red Hat Enterprise MRG 2.", "threat_severity": "Moderate"}

{}