{"id":"CVE-2011-1763","aliases":["EUVD-2011-1762","GHSA-2xx5-rm9h-fw44","RHSA-2011:0833"],"status":"published","title":"The get_free_port function in Xen allows local authenticated DomU users to cause a denial of...","description":"The get_free_port function in Xen allows local authenticated DomU users to cause a denial of service or possibly gain privileges via unspecified vectors involving a new event channel port.","severity":{"version":"2.0","score":7.7,"vector":"AV:A/AC:L/Au:S/C:C/I:C/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.00555,"percentile":0.46596,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2014-01-07T19:00:00Z","modified":"2026-06-28T10:04:56Z","affected":[{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::server","package":"kernel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.18-238.12.1.el5"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::server","package":"kernel-PAE","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.18-238.12.1.el5"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::server","package":"kernel-PAE-debuginfo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.18-238.12.1.el5"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::server","package":"kernel-PAE-devel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.18-238.12.1.el5"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::server","package":"kernel-debug","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.18-238.12.1.el5"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::server","package":"kernel-debug-debuginfo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.18-238.12.1.el5"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::server","package":"kernel-debug-devel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.18-238.12.1.el5"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::server","package":"kernel-debuginfo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.18-238.12.1.el5"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::server","package":"kernel-debuginfo-common","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.18-238.12.1.el5"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::server","package":"kernel-devel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.18-238.12.1.el5"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::server","package":"kernel-doc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.18-238.12.1.el5"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::server","package":"kernel-kdump","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.18-238.12.1.el5"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::server","package":"kernel-kdump-debuginfo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.18-238.12.1.el5"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::server","package":"kernel-kdump-devel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.18-238.12.1.el5"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::server","package":"kernel-xen","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.18-238.12.1.el5"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::server","package":"kernel-xen-debuginfo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.18-238.12.1.el5"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:5::server","package":"kernel-xen-devel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.18-238.12.1.el5"}]}],"bundled":14}],"products":[{"vendor":"xen","product":"xen"}],"references":[{"url":"http://rhn.redhat.com/errata/RHSA-2011-0833.html","tags":["vendor-advisory","x_refsource_REDHAT","x_transferred"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=701240","tags":["x_refsource_CONFIRM","x_transferred","report"]},{"url":"http://downloads.avaya.com/css/P8/documents/100145416","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-1763","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-2xx5-rm9h-fw44"},{"url":"https://access.redhat.com/errata/RHSA-2011:0833","tags":["advisory"]},{"url":"https://access.redhat.com/security/updates/classification/#important","tags":["article"]},{"url":"http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/5.6_Technical_Notes/kernel.html#RHSA-2011-0833","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=681259","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=681260","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=681262","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=682954","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=684569","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=688021","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=688156","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=688579","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=689321","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=689327","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=689345","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=689699","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=689700","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=690134","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=690239","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=694021","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=695976","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=696136","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=697448","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=699808","tags":["report"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2011/rhsa-2011_0833.json","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2011-0726","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2011-0726","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-0726","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2011-1078","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2011-1078","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-1078","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2011-1079","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2011-1079","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-1079","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2011-1080","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2011-1080","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-1080","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2011-1093","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2011-1093","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-1093","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2011-1163","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2011-1163","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-1163","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2011-1166","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2011-1166","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-1166","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2011-1170","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2011-1170","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-1170","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2011-1171","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2011-1171","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-1171","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2011-1172","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2011-1172","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-1172","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2011-1494","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2011-1494","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-1494","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2011-1495","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2011-1495","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-1495","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2011-1577","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2011-1577","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-1577","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2011-1763","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2011-1763","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2011-1763","description":"The get_free_port function in Xen allows local authenticated DomU users to cause a denial of service or possibly gain privileges via unspecified vectors involving a new event channel port.","status":"published","published":"2014-01-07T19:00:00Z","modified":"2024-08-06T22:37:25.699Z","updated_at":"2026-11-02T14:35:38.321377Z"}],"euvd":[{"id":"EUVD-2011-1762","description":"The get_free_port function in Xen allows local authenticated DomU users to cause a denial of service or possibly gain privileges via unspecified vectors involving a new event channel port.","status":"published","published":"2014-01-07T19:00:00Z","modified":"2024-08-06T22:37:25Z","updated_at":"2026-11-03T01:55:55.207376Z"}],"ghsa":[{"id":"GHSA-2xx5-rm9h-fw44","title":"The get_free_port function in Xen allows local authenticated DomU users to cause a denial of...","description":"The get_free_port function in Xen allows local authenticated DomU users to cause a denial of service or possibly gain privileges via unspecified vectors involving a new event channel port.","status":"published","published":"2022-05-17T04:08:30Z","modified":"2023-01-28T05:01:07Z","updated_at":"2026-11-02T14:43:29.335465Z"}],"nvd":[{"id":"CVE-2011-1763","description":"The get_free_port function in Xen allows local authenticated DomU users to cause a denial of service or possibly gain privileges via unspecified vectors involving a new event channel port.","status":"published","published":"2014-01-07T19:55:05.89Z","modified":"2026-06-16T23:29:58.85Z","cvss":[{"version":"2.0","score":7.7,"vector":"AV:A/AC:L/Au:S/C:C/I:C/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:02:12.639283Z"}],"osv":[{"id":"RHSA-2011:0833","title":"Red Hat Security Advisory: kernel security and bug fix update","status":"published","published":"2024-09-15T19:08:40Z","modified":"2026-06-28T10:04:56Z","updated_at":"2026-11-02T15:53:01.003286Z"}]}}
