{"id":"USN-2643-2","aliases":[],"status":"published","title":"linux regression","description":"The Fix for CVE-2015-1328 introduced a regression into the Linux kernel's\noverlayfs file system. The removal of a directory that only exists on the\nlower layer results in a kernel panic.\n\nWe apologize for the inconvenience.\n\nOriginal advisory details:\n\n Philip Pettersson discovered a privilege escalation when using overlayfs\n mounts inside of user namespaces. A local user could exploit this flaw to\n gain administrative privileges on the system.","facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2015-06-21T18:47:11Z","modified":"2026-04-22T09:13:43Z","fixes":[{"ecosystem":"Ubuntu:14.04:LTS","package":"linux","fixed_in":["3.13.0-55.94"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"linux","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.13.0-55.94"}]}],"versions":["3.11.0-12.19","3.12.0-1.3","3.12.0-2.5","3.12.0-2.7","3.12.0-3.8","3.12.0-3.9","3.12.0-4.10","3.12.0-4.12","3.12.0-5.13","3.12.0-7.15","3.13.0-1.16","3.13.0-2.17","3.13.0-3.18","3.13.0-4.19","3.13.0-5.20","3.13.0-6.23","3.13.0-7.25","3.13.0-7.26","3.13.0-8.27","3.13.0-8.28","3.13.0-10.30","3.13.0-11.31","3.13.0-12.32","3.13.0-13.33","3.13.0-14.34","3.13.0-15.35","3.13.0-16.36","3.13.0-17.37","3.13.0-18.38","3.13.0-19.39","3.13.0-19.40","3.13.0-20.42","3.13.0-21.43","3.13.0-22.44","3.13.0-23.45","3.13.0-24.46","3.13.0-24.47","3.13.0-27.50","3.13.0-29.53","3.13.0-30.54","3.13.0-30.55","3.13.0-32.57","3.13.0-33.58","3.13.0-34.60","3.13.0-35.62","3.13.0-36.63","3.13.0-37.64","3.13.0-39.66","3.13.0-40.69","3.13.0-41.70","3.13.0-43.72","3.13.0-44.73","3.13.0-45.74","3.13.0-46.75","3.13.0-46.76","3.13.0-46.77","3.13.0-46.79","3.13.0-48.80","3.13.0-49.81","3.13.0-49.83","3.13.0-51.84","3.13.0-52.85","3.13.0-52.86","3.13.0-53.88","3.13.0-53.89","3.13.0-54.91","3.13.0-55.92"]}],"references":[{"url":"https://ubuntu.com/security/notices/USN-2643-2","tags":["advisory"]},{"url":"http://bugs.launchpad.net/bugs/1465998","tags":["report"]}],"sources":{"osv":[{"id":"USN-2643-2","title":"linux regression","description":"The Fix for CVE-2015-1328 introduced a regression into the Linux kernel's\noverlayfs file system. The removal of a directory that only exists on the\nlower layer results in a kernel panic.\n\nWe apologize for the inconvenience.\n\nOriginal advisory details:\n\n Philip Pettersson discovered a privilege escalation when using overlayfs\n mounts inside of user namespaces. A local user could exploit this flaw to\n gain administrative privileges on the system.\n","status":"published","published":"2015-06-21T18:47:11Z","modified":"2026-04-22T09:13:43.66983Z","updated_at":"2026-11-02T16:58:09.227524Z"}]}}