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{"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"}