{"id":"CVE-2017-18200","aliases":["EUVD-2017-9333","GHSA-j9rw-gf83-2qrw","UBUNTU-CVE-2017-18200"],"status":"published","title":"The f2fs implementation in the Linux kernel before 4.14 mishandles reference counts associated...","description":"The f2fs implementation in the Linux kernel before 4.14 mishandles reference counts associated with f2fs_wait_discard_bios calls, which allows local users to cause a denial of service (BUG), as demonstrated by fstrim.","severity":{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00329,"percentile":0.26233,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2018-02-26T03:00:00Z","modified":"2026-06-17T01:12:22Z","products":[{"vendor":"linux","product":"linux_kernel"}],"references":[{"url":"https://github.com/torvalds/linux/commit/638164a2718f337ea224b747cf5977ef143166a4","tags":["x_refsource_CONFIRM","x_transferred","Patch","Third Party Advisory","report"]},{"url":"http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=638164a2718f337ea224b747cf5977ef143166a4","tags":["x_refsource_CONFIRM","x_transferred","Patch","Third Party Advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-18200"},{"url":"https://github.com/advisories/GHSA-j9rw-gf83-2qrw"},{"url":"https://ubuntu.com/security/CVE-2017-18200","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2017-18200","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2017-18200","description":"The f2fs implementation in the Linux kernel before 4.14 mishandles reference counts associated with f2fs_wait_discard_bios calls, which allows local users to cause a denial of service (BUG), as demonstrated by fstrim.","status":"published","published":"2018-02-26T03:00:00Z","modified":"2024-08-05T21:13:49.037Z","updated_at":"2026-11-02T14:33:22.064284Z"}],"euvd":[{"id":"EUVD-2017-9333","description":"The f2fs implementation in the Linux kernel before 4.14 mishandles reference counts associated with f2fs_wait_discard_bios calls, which allows local users to cause a denial of service (BUG), as demonstrated by fstrim.","status":"published","published":"2018-02-26T03:00:00Z","modified":"2024-08-05T21:13:49Z","updated_at":"2026-11-03T02:23:07.6199Z"}],"ghsa":[{"id":"GHSA-j9rw-gf83-2qrw","title":"The f2fs implementation in the Linux kernel before 4.14 mishandles reference counts associated...","description":"The f2fs implementation in the Linux kernel before 4.14 mishandles reference counts associated with f2fs_wait_discard_bios calls, which allows local users to cause a denial of service (BUG), as demonstrated by fstrim.","status":"published","published":"2022-05-14T03:37:15Z","modified":"2023-02-02T05:09:50Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:52:45.777625Z"}],"nvd":[{"id":"CVE-2017-18200","description":"The f2fs implementation in the Linux kernel before 4.14 mishandles reference counts associated with f2fs_wait_discard_bios calls, which allows local users to cause a denial of service (BUG), as demonstrated by fstrim.","status":"published","published":"2018-02-26T03:29:00.227Z","modified":"2026-06-17T01:12:22.85Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4.9,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:04:15.877386Z"}],"osv":[{"id":"UBUNTU-CVE-2017-18200","description":"The f2fs implementation in the Linux kernel before 4.14 mishandles reference counts associated with f2fs_wait_discard_bios calls, which allows local users to cause a denial of service (BUG), as demonstrated by fstrim.","status":"withdrawn","published":"2018-02-26T03:29:00Z","modified":"2025-07-16T07:36:30.253114Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:14.977781Z"}]}}