{"id":"CVE-2011-2189","details":"net/core/net_namespace.c in the Linux kernel 2.6.32 and earlier does not properly handle a high rate of creation and cleanup of network namespaces, which makes it easier for remote attackers to cause a denial of service (memory consumption) via requests to a daemon that requires a separate namespace per connection, as demonstrated by vsftpd.","modified":"2026-01-27T04:10:49.835442Z","published":"2011-10-10T10:55:05Z","withdrawn":"2026-01-27T04:10:49.835442Z","references":[{"type":"EVIDENCE","url":"http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629373"},{"type":"FIX","url":"http://patchwork.ozlabs.org/patch/88217/"},{"type":"ADVISORY","url":"http://www.debian.org/security/2011/dsa-2305"},{"type":"ARTICLE","url":"http://www.openwall.com/lists/oss-security/2011/06/06/10"},{"type":"ARTICLE","url":"http://www.openwall.com/lists/oss-security/2011/06/06/20"},{"type":"ADVISORY","url":"http://www.ubuntu.com/usn/USN-1288-1"},{"type":"EVIDENCE","url":"https://bugs.launchpad.net/ubuntu/+source/linux/+bug/720095"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=711134"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=711245"},{"type":"WEB","url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=2b035b39970740722598f7a9d548835f9bdd730f"},{"type":"WEB","url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f875bae065334907796da12523f9df85c89f5712"},{"type":"WEB","url":"http://ie.archive.ubuntu.com/linux/kernel/v2.6/ChangeLog-2.6.33"},{"type":"WEB","url":"http://kerneltrap.org/mailarchive/git-commits-head/2009/12/8/15289"},{"type":"WEB","url":"http://neil.brown.name/git?p=linux-2.6%3Ba=patch%3Bh=2b035b39970740722598f7a9d548835f9bdd730f"}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}