Reference Count Mishandling in f2fs_wait_discard_bios Leads to Denial of Service Vulnerability

CVE-2017-18200 · MEDIUM Severity

AV:L/AC:L/AU:N/C:N/I:N/A:C

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.

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