{"id":"CVE-2016-6516","aliases":["DEBIAN-CVE-2016-6516","EUVD-2016-7438","GHSA-j5cv-c6j4-5gv8","UBUNTU-CVE-2016-6516","openSUSE-SU-2024:10128-1"],"status":"published","title":"Race condition in the ioctl_file_dedupe_range function in fs/ioctl.c in the Linux kernel through...","description":"Race condition in the ioctl_file_dedupe_range function in fs/ioctl.c in the Linux kernel through 4.7 allows local users to cause a denial of service (heap-based buffer overflow) or possibly gain privileges by changing a certain count value, aka a \"double fetch\" vulnerability.","severity":{"version":"3.0","score":7.4,"vector":"CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.00949,"percentile":0.61449,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-119","CWE-362"],"published":"2016-08-06T20:00:00Z","modified":"2026-09-22T07:00:26Z","exploits":[{"source":"pocgithub","id":"wpengfei/CVE-2016-6516-exploit","title":"wpengfei/CVE-2016-6516-exploit","date":"2017-12-07","url":"https://github.com/wpengfei/CVE-2016-6516-exploit"}],"fixes":[{"ecosystem":"Debian:12","package":"linux","fixed_in":["4.7.2-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"linux","fixed_in":["4.7.2-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"linux","fixed_in":["4.7.2-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"linux","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.7.2-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"linux","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.7.2-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"linux","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.7.2-1"}]}]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"kernel-source","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8.13-1.1"}]}],"bundled":82}],"products":[{"vendor":"linux","product":"linux_kernel"}],"references":[{"url":"https://github.com/torvalds/linux/commit/10eec60ce79187686e052092e5383c99b4420a20","tags":["x_refsource_CONFIRM","x_transferred","Patch","fix"]},{"url":"http://www.securityfocus.com/bid/92259","tags":["vdb-entry","x_refsource_BID","x_transferred","web"]},{"url":"http://www.openwall.com/lists/oss-security/2016/07/31/6","tags":["mailing-list","x_refsource_MLIST","x_transferred","Release 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