CVE-2026-89836

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix folionrpages race after put in large folio invalidate Our v6.18 based Android system is continuely suffering livelock and bad page stat as shown in1 which related to broken xarray slot status. By investigating big folio...

CVE-2026-89836 f2fs: fix folio_nr_pages() race after put in large folio invalidate

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix folionrpages race after put in large folio invalidate Our v6.18 based Android system is continuely suffering livelock and bad page stat as shown in1 which related to broken xarray slot status. By investigating big folio...

CVE-2026-89836

CVE-2026-89836 is a race condition in the Linux kernel's f2fs filesystem driver. The root cause is that f2fs_get_read_data_folio() calls f2fs_folio_put() before folio_nr_pages() when invalidating a large folio, dropping the reference and releasing the folio lock before the page count is read. A c...