{"id":"CVE-2011-1083","url":"https://www.cyber-defence.io/tools/cve/CVE-2011-1083","generatedAt":"2026-10-27T23:08:14.322Z","title":"The epoll implementation in the Linux kernel 2.6.37.2 and earlier does not properly traverse a tree of epoll file descriptors, which allows local users to cause a denial of service (CPU consumption) via a crafted application that makes epoll_create and…","description":"The epoll implementation in the Linux kernel 2.6.37.2 and earlier does not properly traverse a tree of epoll file descriptors, which allows local users to cause a denial of service (CPU consumption) via a crafted application that makes epoll_create and epoll_ctl system calls.","published":"2011-04-04T12:27:57.000Z","lastModified":"2026-06-16T23:28:41.000Z","status":"Modified","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"2.0","score":4.9,"severity":"MEDIUM","vector":"AV:L/AC:L/Au:N/C:N/I:N/A:C"},"cwe":["CWE-400"],"affected":["linux/linux kernel","suse/linux enterprise desktop","suse/linux enterprise server","redhat/enterprise linux desktop","redhat/enterprise linux server","redhat/enterprise linux workstation"],"epss":{"score":0.00795,"percentile":0.56148,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":1,"verified":true,"firstPublished":"2011-03-02","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":35403,"kind":"exploit","title":"Linux Kernel 2.6.x - epoll Nested Structures Local Denial of Service","url":"https://www.exploit-db.com/exploits/35403","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/dos/35403.c","file":"exploits/linux/dos/35403.c","published":"2011-03-02","added":"2011-03-02","updated":"2016-09-06","author":"Nelson Elhage","type":"dos","platform":"linux","port":null,"verified":true,"codes":["CVE-2011-1083","OSVDB-71265"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"https://www.securityfocus.com/bid/46630/info"}]},"verdict":{"level":"high","text":"A public exploit is published in Exploit-DB (verified), so the technical barrier is gone even though the severity is medium and EPSS is 0.8%. Treat it as high on anything reachable from the internet."},"changes":[],"references":[{"url":"http://article.gmane.org/gmane.linux.kernel/1105744","tags":["Broken Link"],"source":"secalert@redhat.com"},{"url":"http://article.gmane.org/gmane.linux.kernel/1105888","tags":["Broken Link"],"source":"secalert@redhat.com"},{"url":"http://article.gmane.org/gmane.linux.kernel/1106686","tags":["Broken Link"],"source":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00021.html","tags":["Mailing List","Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html","tags":["Mailing List","Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://openwall.com/lists/oss-security/2011/03/02/1","tags":["Mailing List","Patch","Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://openwall.com/lists/oss-security/2011/03/02/2","tags":["Mailing List","Patch"],"source":"secalert@redhat.com"},{"url":"http://rhn.redhat.com/errata/RHSA-2012-0862.html","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/43522","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/48115","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/48410","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/48898","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/48964","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://www.osvdb.org/71265","tags":["Broken Link"],"source":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=681578","tags":["Issue Tracking","Patch","Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://article.gmane.org/gmane.linux.kernel/1105744","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://article.gmane.org/gmane.linux.kernel/1105888","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://article.gmane.org/gmane.linux.kernel/1106686","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00021.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://openwall.com/lists/oss-security/2011/03/02/1","tags":["Mailing List","Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://openwall.com/lists/oss-security/2011/03/02/2","tags":["Mailing List","Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://rhn.redhat.com/errata/RHSA-2012-0862.html","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/43522","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/48115","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/48410","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/48898","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/48964","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.osvdb.org/71265","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=681578","tags":["Issue Tracking","Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2011-1083","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}