{"id":"CVE-2026-46175","summary":"f2fs: fix fsck inconsistency caused by FGGC of node block","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix fsck inconsistency caused by FGGC of node block\n\nDuring FGGC node block migration, fsck may incorrectly treat the\nmigrated node block as fsync-written data.\n\nThe reproduction scenario:\nroot@vm:/mnt/f2fs# seq 1 2048 | xargs -n 1 ./test_sync // write inline inode and sync\nroot@vm:/mnt/f2fs# rm -f 1\nroot@vm:/mnt/f2fs# sync\nroot@vm:/mnt/f2fs# f2fs_io gc_range // move data block in sync mode and not write CP\n  SPO, \"fsck --dry-run\" find inode has already checkpointed but still\n  with DENT_BIT_SHIFT set\n\nThe root cause is that GC does not clear the dentry mark and fsync mark\nduring node block migration, leading fsck to misinterpret them as\nuser-issued fsync writes.\n\nIn BGGC mode, node block migration is handled by f2fs_sync_node_pages(),\nwhich guarantees the dentry and fsync marks are cleared before writing.\n\nThis patch move the set/clear of the fsync|dentry marks into\n__write_node_folio to make the logic clearer, and ensures the\nfsync|dentry mark is cleared in FGGC.","modified":"2026-07-08T08:13:37.963208190Z","published":"2026-05-28T09:36:29.522Z","related":["openSUSE-SU-2026:10954-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46175.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/8be551f538dc5b64183e27bd45a7a0795263f760"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c3e238bd1f56993f205ef83889d406dfeaf717a8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e7c6d30169b03307d27c4479563df79c08f3a746"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46175.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46175"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"da011cc0da8cf4a60ddf4d2ae8b42902a3d71e5f"},{"fixed":"8be551f538dc5b64183e27bd45a7a0795263f760"},{"fixed":"e7c6d30169b03307d27c4479563df79c08f3a746"},{"fixed":"c3e238bd1f56993f205ef83889d406dfeaf717a8"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46175.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.7.0"},{"fixed":"6.18.30"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.7"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46175.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H"}]}