CVE-2025-37925— jfs: reject on-disk inodes of an unsupported type
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I. Basic Information for CVE-2025-37925
Vulnerability Information
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Vulnerability Title
jfs: reject on-disk inodes of an unsupported type
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: jfs: reject on-disk inodes of an unsupported type Syzbot has reported the following BUG: kernel BUG at fs/inode.c:668! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 3 UID: 0 PID: 139 Comm: jfsCommit Not tainted 6.12.0-rc4-syzkaller-00085-g4e46774408d9 #0 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-3.fc41 04/01/2014 RIP: 0010:clear_inode+0x168/0x190 Code: 4c 89 f7 e8 ba fe e5 ff e9 61 ff ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 7c c1 4c 89 f7 e8 90 ff e5 ff eb b7 0b e8 01 5d 7f ff 90 0f 0b e8 f9 5c 7f ff 90 0f 0b e8 f1 5c 7f RSP: 0018:ffffc900027dfae8 EFLAGS: 00010093 RAX: ffffffff82157a87 RBX: 0000000000000001 RCX: ffff888104d4b980 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc900027dfc90 R08: ffffffff82157977 R09: fffff520004fbf38 R10: dffffc0000000000 R11: fffff520004fbf38 R12: dffffc0000000000 R13: ffff88811315bc00 R14: ffff88811315bda8 R15: ffff88811315bb80 FS: 0000000000000000(0000) GS:ffff888135f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005565222e0578 CR3: 0000000026ef0000 CR4: 00000000000006f0 Call Trace: <TASK> ? __die_body+0x5f/0xb0 ? die+0x9e/0xc0 ? do_trap+0x15a/0x3a0 ? clear_inode+0x168/0x190 ? do_error_trap+0x1dc/0x2c0 ? clear_inode+0x168/0x190 ? __pfx_do_error_trap+0x10/0x10 ? report_bug+0x3cd/0x500 ? handle_invalid_op+0x34/0x40 ? clear_inode+0x168/0x190 ? exc_invalid_op+0x38/0x50 ? asm_exc_invalid_op+0x1a/0x20 ? clear_inode+0x57/0x190 ? clear_inode+0x167/0x190 ? clear_inode+0x168/0x190 ? clear_inode+0x167/0x190 jfs_evict_inode+0xb5/0x440 ? __pfx_jfs_evict_inode+0x10/0x10 evict+0x4ea/0x9b0 ? __pfx_evict+0x10/0x10 ? iput+0x713/0xa50 txUpdateMap+0x931/0xb10 ? __pfx_txUpdateMap+0x10/0x10 jfs_lazycommit+0x49a/0xb80 ? _raw_spin_unlock_irqrestore+0x8f/0x140 ? lockdep_hardirqs_on+0x99/0x150 ? __pfx_jfs_lazycommit+0x10/0x10 ? __pfx_default_wake_function+0x10/0x10 ? __kthread_parkme+0x169/0x1d0 ? __pfx_jfs_lazycommit+0x10/0x10 kthread+0x2f2/0x390 ? __pfx_jfs_lazycommit+0x10/0x10 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x4d/0x80 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1a/0x30 </TASK> This happens when 'clear_inode()' makes an attempt to finalize an underlying JFS inode of unknown type. According to JFS layout description from https://jfs.sourceforge.net/project/pub/jfslayout.pdf, inode types from 5 to 15 are reserved for future extensions and should not be encountered on a valid filesystem. So add an extra check for valid inode type in 'copy_from_dinode()'.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于jfs拒绝处理不支持类型的磁盘inode。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-37925
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Same Patch Batch · Linux · 2025-04-18 · 23 CVEs total
| CVE-2025-38637 | net_sched: skbprio: Remove overly strict queue assertions | |
| CVE-2025-37785 | ext4: fix OOB read when checking dotdot dir | |
| CVE-2025-37860 | sfc: fix NULL dereferences in ef100_process_design_param() | |
| CVE-2025-37893 | LoongArch: BPF: Fix off-by-one error in build_prologue() | |
| CVE-2025-38049 | x86/resctrl: Fix allocation of cleanest CLOSID on platforms with no monitors | |
| CVE-2025-38104 | drm/amdgpu: Replace Mutex with Spinlock for RLCG register access to avoid Priority Inversi | |
| CVE-2025-38152 | remoteproc: core: Clear table_sz when rproc_shutdown | |
| CVE-2025-38240 | drm/mediatek: dp: drm_err => dev_err in HPD path to avoid NULL ptr | |
| CVE-2025-38479 | dmaengine: fsl-edma: free irq correctly in remove path | |
| CVE-2025-38575 | ksmbd: use aead_request_free to match aead_request_alloc | |
| CVE-2025-39688 | nfsd: allow SC_STATUS_FREEABLE when searching via nfs4_lookup_stateid() | |
| CVE-2025-37838 | HSI: ssi_protocol: Fix use after free vulnerability in ssi_protocol Driver Due to Race Con | |
| CVE-2025-39735 | jfs: fix slab-out-of-bounds read in ea_get() | |
| CVE-2025-39728 | clk: samsung: Fix UBSAN panic in samsung_clk_init() | |
| CVE-2025-39755 | staging: gpib: Fix cb7210 pcmcia Oops | |
| CVE-2025-39778 | objtool, nvmet: Fix out-of-bounds stack access in nvmet_ctrl_state_show() | |
| CVE-2025-39930 | ASoC: simple-card-utils: Don't use __free(device_node) at graph_util_parse_dai() | |
| CVE-2025-39989 | x86/mce: use is_copy_from_user() to determine copy-from-user context | |
| CVE-2025-40014 | objtool, spi: amd: Fix out-of-bounds stack access in amd_set_spi_freq() | |
| CVE-2025-40114 | iio: light: Add check for array bounds in veml6075_read_int_time_ms |
Showing top 20 of 23 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
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