{"id":"CVE-2024-42297","summary":"f2fs: fix to don't dirty inode for readonly filesystem","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to don't dirty inode for readonly filesystem\n\nsyzbot reports f2fs bug as below:\n\nkernel BUG at fs/f2fs/inode.c:933!\nRIP: 0010:f2fs_evict_inode+0x1576/0x1590 fs/f2fs/inode.c:933\nCall Trace:\n evict+0x2a4/0x620 fs/inode.c:664\n dispose_list fs/inode.c:697 [inline]\n evict_inodes+0x5f8/0x690 fs/inode.c:747\n generic_shutdown_super+0x9d/0x2c0 fs/super.c:675\n kill_block_super+0x44/0x90 fs/super.c:1667\n kill_f2fs_super+0x303/0x3b0 fs/f2fs/super.c:4894\n deactivate_locked_super+0xc1/0x130 fs/super.c:484\n cleanup_mnt+0x426/0x4c0 fs/namespace.c:1256\n task_work_run+0x24a/0x300 kernel/task_work.c:180\n ptrace_notify+0x2cd/0x380 kernel/signal.c:2399\n ptrace_report_syscall include/linux/ptrace.h:411 [inline]\n ptrace_report_syscall_exit include/linux/ptrace.h:473 [inline]\n syscall_exit_work kernel/entry/common.c:251 [inline]\n syscall_exit_to_user_mode_prepare kernel/entry/common.c:278 [inline]\n __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]\n syscall_exit_to_user_mode+0x15c/0x280 kernel/entry/common.c:296\n do_syscall_64+0x50/0x110 arch/x86/entry/common.c:88\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\n\nThe root cause is:\n- do_sys_open\n - f2fs_lookup\n  - __f2fs_find_entry\n   - f2fs_i_depth_write\n    - f2fs_mark_inode_dirty_sync\n     - f2fs_dirty_inode\n      - set_inode_flag(inode, FI_DIRTY_INODE)\n\n- umount\n - kill_f2fs_super\n  - kill_block_super\n   - generic_shutdown_super\n    - sync_filesystem\n    : sb is readonly, skip sync_filesystem()\n    - evict_inodes\n     - iput\n      - f2fs_evict_inode\n       - f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE))\n       : trigger kernel panic\n\nWhen we try to repair i_current_depth in readonly filesystem, let's\nskip dirty inode to avoid panic in later f2fs_evict_inode().","modified":"2026-04-16T00:12:42.520393889Z","published":"2024-08-17T09:09:05.076Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/42xxx/CVE-2024-42297.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/192b8fb8d1c8ca3c87366ebbef599fa80bb626b8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2434344559f6743efb3ac15d11af9a0db9543bd3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2d2916516577f2239b3377d9e8d12da5e6ccdfcf"},{"type":"WEB","url":"https://git.kernel.org/stable/c/54162974aea37a8cae00742470a78c7f6bd6f915"},{"type":"WEB","url":"https://git.kernel.org/stable/c/54bc4e88447e385c4d4ffa85d93e0dce628fcfa6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9ce8135accf103f7333af472709125878704fdd4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e62ff092a42f4a1bae3b310cf46673b4f3aac3b5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ec56571b4b146a1cfbedab49d5fcaf19fe8bf4f1"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/42xxx/CVE-2024-42297.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-42297"},{"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":"98e4da8ca301e062d79ae168c67e56f3c3de3ce4"},{"fixed":"2d2916516577f2239b3377d9e8d12da5e6ccdfcf"},{"fixed":"54162974aea37a8cae00742470a78c7f6bd6f915"},{"fixed":"54bc4e88447e385c4d4ffa85d93e0dce628fcfa6"},{"fixed":"ec56571b4b146a1cfbedab49d5fcaf19fe8bf4f1"},{"fixed":"9ce8135accf103f7333af472709125878704fdd4"},{"fixed":"e62ff092a42f4a1bae3b310cf46673b4f3aac3b5"},{"fixed":"2434344559f6743efb3ac15d11af9a0db9543bd3"},{"fixed":"192b8fb8d1c8ca3c87366ebbef599fa80bb626b8"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-42297.json"}}],"schema_version":"1.7.5"}