{"id":"DEBIAN-CVE-2025-38347","details":"In the Linux kernel, the following vulnerability has been resolved:  f2fs: fix to do sanity check on ino and xnid  syzbot reported a f2fs bug as below:  INFO: task syz-executor140:5308 blocked for more than 143 seconds.       Not tainted 6.14.0-rc7-syzkaller-00069-g81e4f8d68c66 #0 \"echo 0 \u003e /proc/sys/kernel/hung_task_timeout_secs\" disables this message. task:syz-executor140 state:D stack:24016 pid:5308  tgid:5308  ppid:5306   task_flags:0x400140 flags:0x00000006 Call Trace:  \u003cTASK\u003e  context_switch kernel/sched/core.c:5378 [inline]  __schedule+0x190e/0x4c90 kernel/sched/core.c:6765  __schedule_loop kernel/sched/core.c:6842 [inline]  schedule+0x14b/0x320 kernel/sched/core.c:6857  io_schedule+0x8d/0x110 kernel/sched/core.c:7690  folio_wait_bit_common+0x839/0xee0 mm/filemap.c:1317  __folio_lock mm/filemap.c:1664 [inline]  folio_lock include/linux/pagemap.h:1163 [inline]  __filemap_get_folio+0x147/0xb40 mm/filemap.c:1917  pagecache_get_page+0x2c/0x130 mm/folio-compat.c:87  find_get_page_flags include/linux/pagemap.h:842 [inline]  f2fs_grab_cache_page+0x2b/0x320 fs/f2fs/f2fs.h:2776  __get_node_page+0x131/0x11b0 fs/f2fs/node.c:1463  read_xattr_block+0xfb/0x190 fs/f2fs/xattr.c:306  lookup_all_xattrs fs/f2fs/xattr.c:355 [inline]  f2fs_getxattr+0x676/0xf70 fs/f2fs/xattr.c:533  __f2fs_get_acl+0x52/0x870 fs/f2fs/acl.c:179  f2fs_acl_create fs/f2fs/acl.c:375 [inline]  f2fs_init_acl+0xd7/0x9b0 fs/f2fs/acl.c:418  f2fs_init_inode_metadata+0xa0f/0x1050 fs/f2fs/dir.c:539  f2fs_add_inline_entry+0x448/0x860 fs/f2fs/inline.c:666  f2fs_add_dentry+0xba/0x1e0 fs/f2fs/dir.c:765  f2fs_do_add_link+0x28c/0x3a0 fs/f2fs/dir.c:808  f2fs_add_link fs/f2fs/f2fs.h:3616 [inline]  f2fs_mknod+0x2e8/0x5b0 fs/f2fs/namei.c:766  vfs_mknod+0x36d/0x3b0 fs/namei.c:4191  unix_bind_bsd net/unix/af_unix.c:1286 [inline]  unix_bind+0x563/0xe30 net/unix/af_unix.c:1379  __sys_bind_socket net/socket.c:1817 [inline]  __sys_bind+0x1e4/0x290 net/socket.c:1848  __do_sys_bind net/socket.c:1853 [inline]  __se_sys_bind net/socket.c:1851 [inline]  __x64_sys_bind+0x7a/0x90 net/socket.c:1851  do_syscall_x64 arch/x86/entry/common.c:52 [inline]  do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83  entry_SYSCALL_64_after_hwframe+0x77/0x7f  Let's dump and check metadata of corrupted inode, it shows its xattr_nid is the same to its i_ino.  dump.f2fs -i 3 chaseyu.img.raw i_xattr_nid                             [0x       3 : 3]  So that, during mknod in the corrupted directory, it tries to get and lock inode page twice, result in deadlock.  - f2fs_mknod  - f2fs_add_inline_entry   - f2fs_get_inode_page --- lock dir's inode page    - f2fs_init_acl     - f2fs_acl_create(dir,..)      - __f2fs_get_acl       - f2fs_getxattr        - lookup_all_xattrs         - __get_node_page --- try to lock dir's inode page  In order to fix this, let's add sanity check on ino and xnid.","modified":"2026-09-01T16:06:14.641975894Z","published":"2025-07-10T09:15:29.717Z","upstream":["CVE-2025-38347"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2025-38347"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.153-1"}]}],"versions":["6.1.106-1","6.1.106-2","6.1.106-3","6.1.112-1","6.1.115-1","6.1.119-1","6.1.123-1","6.1.124-1","6.1.128-1","6.1.129-1","6.1.133-1","6.1.135-1","6.1.137-1","6.1.139-1","6.1.140-1","6.1.147-1","6.1.148-1","6.1.27-1","6.1.37-1","6.1.38-1","6.1.38-2","6.1.38-2~bpo11+1","6.1.38-3","6.1.38-4","6.1.38-4~bpo11+1","6.1.52-1","6.1.55-1","6.1.55-1~bpo11+1","6.1.64-1","6.1.66-1","6.1.67-1","6.1.69-1","6.1.69-1~bpo11+1","6.1.76-1","6.1.76-1~bpo11+1","6.1.82-1","6.1.85-1","6.1.90-1","6.1.90-1~bpo11+1","6.1.94-1","6.1.94-1~bpo11+1","6.1.98-1","6.1.99-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-38347.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.35-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-38347.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.35-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-38347.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}