CVE-2025-38578: In the Linux kernel, the following vulnerability has been resolved:  f2fs: fix to avoid UAF in f2fs_sync_inode_meta()  syzbot reported an UAF issue as below: [1] [2]  [1] https://syzkaller.appspot.com/text?tag=CrashReport&x=16594c60580000  ================================================================== BUG: KASAN: use-after-free in __list_del_entry_valid+0xa6/0x130 lib/list_debug.c:62 Read of size 8 at addr ffff888100567dc8 by task kworker/u4:0/8  CPU: 1 PID: 8 Comm: kworker/u4:0 Tainted: G        W          6.1.129-syzkaller-00017-g642656a36791 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Workqueue: writeback wb_workfn (flush-7:0) Call Trace:  <TASK>  __dump_stack lib/dump_stack.c:88 [inline]  dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106  print_address_description mm/kasan/report.c:316 [inline]  print_report+0x158/0x4e0 mm/kasan/report.c:427  kasan_report+0x13c/0x170 mm/kasan/report.c:531  __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:351  __list_del_entry_valid+0xa6/0x130 lib/list_debug.c:62  __list_del_entry include/linux/list.h:134 [inline]  list_del_init include/linux/list.h:206 [inline]  f2fs_inode_synced+0x100/0x2e0 fs/f2fs/super.c:1553  f2fs_update_inode+0x72/0x1c40 fs/f2fs/inode.c:588  f2fs_update_inode_page+0x135/0x170 fs/f2fs/inode.c:706  f2fs_write_inode+0x416/0x790 fs/f2fs/inode.c:734  write_inode fs/fs-writeback.c:1460 [inline]  __writeback_single_inode+0x4cf/0xb80 fs/fs-writeback.c:1677  writeback_sb_inodes+0xb32/0x1910 fs/fs-writeback.c:1903  __writeback_inodes_wb+0x118/0x3f0 fs/fs-writeback.c:1974  wb_writeback+0x3da/0xa00 fs/fs-writeback.c:2081  wb_check_background_flush fs/fs-writeback.c:2151 [inline]  wb_do_writeback fs/fs-writeback.c:2239 [inline]  wb_workfn+0xbba/0x1030 fs/fs-writeback.c:2266  process_one_work+0x73d/0xcb0 kernel/workqueue.c:2299  worker_thread+0xa60/0x1260 kernel/workqueue.c:2446  kthread+0x26d/0x300 kernel/kthread.c:386  ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295  </TASK>  Allocated by task 298:  kasan_save_stack mm/kasan/common.c:45 [inline]  kasan_set_track+0x4b/0x70 mm/kasan/common.c:52  kasan_save_alloc_info+0x1f/0x30 mm/kasan/generic.c:505  __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:333  kasan_slab_alloc include/linux/kasan.h:202 [inline]  slab_post_alloc_hook+0x53/0x2c0 mm/slab.h:768  slab_alloc_node mm/slub.c:3421 [inline]  slab_alloc mm/slub.c:3431 [inline]  __kmem_cache_alloc_lru mm/slub.c:3438 [inline]  kmem_cache_alloc_lru+0x102/0x270 mm/slub.c:3454  alloc_inode_sb include/linux/fs.h:3255 [inline]  f2fs_alloc_inode+0x2d/0x350 fs/f2fs/super.c:1437  alloc_inode fs/inode.c:261 [inline]  iget_locked+0x18c/0x7e0 fs/inode.c:1373  f2fs_iget+0x55/0x4ca0 fs/f2fs/inode.c:486  f2fs_lookup+0x3c1/0xb50 fs/f2fs/namei.c:484  __lookup_slow+0x2b9/0x3e0 fs/namei.c:1689  lookup_slow+0x5a/0x80 fs/namei.c:1706  walk_component+0x2e7/0x410 fs/namei.c:1997  lookup_last fs/namei.c:2454 [inline]  path_lookupat+0x16d/0x450 fs/namei.c:2478  filename_lookup+0x251/0x600 fs/namei.c:2507  vfs_statx+0x107/0x4b0 fs/stat.c:229  vfs_fstatat fs/stat.c:267 [inline]  vfs_lstat include/linux/fs.h:3434 [inline]  __do_sys_newlstat fs/stat.c:423 [inline]  __se_sys_newlstat+0xda/0x7c0 fs/stat.c:417  __x64_sys_newlstat+0x5b/0x70 fs/stat.c:417  x64_sys_call+0x52/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:7  do_syscall_x64 arch/x86/entry/common.c:51 [inline]  do_syscall_64+0x3b/0x80 arch/x86/entry/common.c:81  entry_SYSCALL_64_after_hwframe+0x68/0xd2  Freed by task 0:  kasan_save_stack mm/kasan/common.c:45 [inline]  kasan_set_track+0x4b/0x70 mm/kasan/common.c:52  kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:516  ____kasan_slab_free+0x131/0x180 mm/kasan/common.c:241  __kasan_slab_free+0x11/0x20 mm/kasan/common.c:249  kasan_slab_free include/linux/kasan.h:178 [inline]  slab_free_hook mm/slub.c:1745 [inline]  slab_free_freelist_hook mm/slub.c:1771 [inline]  slab_free mm/slub.c:3686 [inline]  kmem_cache_free+0x ---truncated---