CVE-2026-89834

CVE-2026-89834 affects the f2fs filesystem in the Linux kernel. In free_segment_range(), the curseg evacuation loop only iterated up to NR_CURSEG_PERSIST_TYPE (0–5), missing non-persistent in-memory curseg types such as CURSEG_COLD_DATA_PINNED and CURSEG_ALL_DATA_ATGC . Although these types are n...