CVE-2026-46194 f2fs: fix node_cnt race between extent node destroy and writeback

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix nodecnt race between extent node destroy and writeback f2fsdestroyextentnode does not set FINOEXTENT before clearing extent nodes. When called from f2fsdropinode with ISYNC set, concurrent kworker writeback can insert n...

CVE-2025-68796

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to avoid updating zero-sized extent in extent cache As syzbot reported: F2FS-fs loop0: updateextenttreerange: extent len is zero, type: 0, extent 0, 0, 0, age 0, 0 ------------ cut here ------------ kernel BUG at...

CVE-2025-68796

The CVE-2025-68796 entry concerns the Linux kernel's f2fs filesystem. A zero-sized extent could be added to the extent cache during error handling in f2fs_zero_range, leading to a potential invalid state observed as a kernel BUG in fs/f2fs/extent_cache.c. The publicly documented fix is to avoid i...