{"id":"CVE-2013-1956","aliases":["DEBIAN-CVE-2013-1956","EUVD-2013-1946","GHSA-2wv8-r8jx-c9hx","UBUNTU-CVE-2013-1956"],"status":"published","title":"The create_user_ns function in kernel/user_namespace.c in the Linux kernel before 3.8.6 does not...","description":"The create_user_ns function in kernel/user_namespace.c in the Linux kernel before 3.8.6 does not check whether a chroot directory exists that differs from the namespace root directory, which allows local users to bypass intended filesystem restrictions via a crafted clone system call.","severity":{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:N/I:P/A:N","level":"low","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00383,"percentile":0.32673,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-264"],"published":"2013-04-24T19:00:00Z","modified":"2026-09-01T20:03:15Z","fixes":[{"ecosystem":"Debian:12","package":"linux","fixed_in":["3.8.11-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"linux","fixed_in":["3.8.11-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"linux","fixed_in":["3.8.11-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"linux","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.8.11-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"linux","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.8.11-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"linux","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.8.11-1"}]}]}],"products":[{"vendor":"linux","product":"linux_kernel"}],"references":[{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3151527ee007b73a0ebd296010f1c0454a919c7d","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"https://github.com/torvalds/linux/commit/3151527ee007b73a0ebd296010f1c0454a919c7d","tags":["x_refsource_CONFIRM","x_transferred","fix"]},{"url":"http://www.openwall.com/lists/oss-security/2013/04/16/11","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.6","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2013-1956"},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=3151527ee007b73a0ebd296010f1c0454a919c7d"},{"url":"https://github.com/advisories/GHSA-2wv8-r8jx-c9hx"},{"url":"https://security-tracker.debian.org/tracker/CVE-2013-1956","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2013-1956","tags":["report"]},{"url":"http://www.openwall.com/lists/oss-security/2013/04/16","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2013-1956","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2013-1956","description":"The create_user_ns function in kernel/user_namespace.c in the Linux kernel before 3.8.6 does not check whether a chroot directory exists that differs from the namespace root directory, which allows local users to bypass intended filesystem restrictions via a crafted clone system call.","status":"published","published":"2013-04-24T19:00:00Z","modified":"2024-08-06T15:20:37.306Z","updated_at":"2026-11-02T14:34:58.193873Z"}],"euvd":[{"id":"EUVD-2013-1946","description":"The create_user_ns function in kernel/user_namespace.c in the Linux kernel before 3.8.6 does not check whether a chroot directory exists that differs from the namespace root directory, which allows local users to bypass intended filesystem restrictions via a crafted clone system call.","status":"published","published":"2013-04-24T19:00:00Z","modified":"2024-08-06T15:20:37Z","updated_at":"2026-11-03T01:56:40.030926Z"}],"ghsa":[{"id":"GHSA-2wv8-r8jx-c9hx","title":"The create_user_ns function in kernel/user_namespace.c in the Linux kernel before 3.8.6 does not...","description":"The create_user_ns function in kernel/user_namespace.c in the Linux kernel before 3.8.6 does not check whether a chroot directory exists that differs from the namespace root directory, which allows local users to bypass intended filesystem restrictions via a crafted clone system call.","status":"published","published":"2022-05-17T05:10:48Z","modified":"2023-02-13T00:30:40Z","updated_at":"2026-11-02T14:54:04.926808Z"}],"nvd":[{"id":"CVE-2013-1956","description":"The create_user_ns function in kernel/user_namespace.c in the Linux kernel before 3.8.6 does not check whether a chroot directory exists that differs from the namespace root directory, which allows local users to bypass intended filesystem restrictions via a crafted clone system call.","status":"published","published":"2013-04-24T19:55:01.003Z","modified":"2026-06-16T23:52:28.29Z","cvss":[{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:N/I:P/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-264"],"updated_at":"2026-11-02T14:02:25.704053Z"}],"osv":[{"id":"CVE-2013-1956","description":"The create_user_ns function in kernel/user_namespace.c in the Linux kernel before 3.8.6 does not check whether a chroot directory exists that differs from the namespace root directory, which allows local users to bypass intended filesystem restrictions via a crafted clone system call.","status":"published","published":"2013-04-24T19:55:01Z","modified":"2026-04-10T03:42:46.196981Z","updated_at":"2026-11-02T15:43:58.802805Z"},{"id":"DEBIAN-CVE-2013-1956","description":"The create_user_ns function in kernel/user_namespace.c in the Linux kernel before 3.8.6 does not check whether a chroot directory exists that differs from the namespace root directory, which allows local users to bypass intended filesystem restrictions via a crafted clone system call.","status":"published","published":"2013-04-24T19:55:01.003Z","modified":"2026-09-01T20:03:15.15229093Z","updated_at":"2026-11-02T15:45:25.514579Z"},{"id":"UBUNTU-CVE-2013-1956","description":"The create_user_ns function in kernel/user_namespace.c in the Linux kernel before 3.8.6 does not check whether a chroot directory exists that differs from the namespace root directory, which allows local users to bypass intended filesystem restrictions via a crafted clone system call.","status":"withdrawn","published":"2013-04-24T19:55:00Z","modified":"2025-07-16T08:10:42.618499Z","updated_at":"2026-11-02T15:54:06.854805Z"}]}}