5.5

CVE-2025-37925: jfs: reject on-disk inodes of an unsupported type

Modified
AliasesUBUNTU-CVE-2025-37925DEBIAN-CVE-2025-37925CGA-266g-x53j-vhm6
Published 18-04-2025Last modified 11-05-2026

Vulnerability summary

CVE-2025-37925 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.30% chance of exploitation in the next 30 days, higher than 22.5% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.30%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 41 · Related 42
DLA-4328-1DSA-5975-1SUSE-SU-2025:01964-1SUSE-SU-2025:01965-1SUSE-SU-2025:02000-1SUSE-SU-2025:02254-1

Timeline

  1. 18-04-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

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()'.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.30%

Chance of exploitation in the next 30 days

Percentile

23%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.29% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu138 products
  • linuxAll versions (No fix recorded) | < 5.15.0-163.173 | < 6.8.0-100.100
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1097.104 | < 6.8.0-1046.49
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Chainguard16 products
  • hyperv-daemons-6.12< 6.12.53-r0
  • linux-aws-6.12< 6.12.53-r0
  • linux-aws-6.12-boot-installed< 6.12.53-r0
  • linux-aws-6.12-fips-boot-installed< 6.12.53-r0
  • linux-aws-6.12-headers< 6.12.53-r0
Linux2 products
  • linux≥ 79ac5a46c5c1c17476fbf84b4d4600d6d565defd, < fa6ce4a9cc9fcc8150b80db6f65186c0ed2b3143 | ≥ 79ac5a46c5c1c17476fbf84b4d4600d6d565defd, < afc08b0b5587b553799bc375957706936a3e0088 | ≥ 79ac5a46c5c1c17476fbf84b4d4600d6d565defd, < 45fd8421081ec79e661e5f3ead2934fdbddb4287 | ≥ 79ac5a46c5c1c17476fbf84b4d4600d6d565defd, < 28419a4f3a1eeee33472a1b3856ae62aaa5a649b | ≥ 79ac5a46c5c1c17476fbf84b4d4600d6d565defd, < 8987891c4653874d5e3f5d11f063912f4e0b58eb | ≥ 79ac5a46c5c1c17476fbf84b4d4600d6d565defd, < 8c3f9a70d2d4dd6c640afe294b05c6a0a45434d9 | 3.1
  • linux_kernel≥ 3.1, < 5.15.190 | ≥ 5.16, < 6.1.148 | ≥ 6.2, < 6.6.101 | ≥ 6.7, < 6.12.41 | ≥ 6.13, < 6.14.2
Debian1 product
  • linux< 6.1.148-1 | < 6.12.41-1 | < 6.16.3-1

4 vendors · 157 products

References

39 links
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