In the Linux kernel, the following vulnerability has been resolved: ceph: avoid kernel BUG for encrypted inode with unaligned file size The generic/397 test hits a BUG_ON for the case of encrypted inode with unaligned file size (for example, 33K or 1K): [ 877.737811] run fstests generic/397 at 2025-01-03 12:34:40 [ 877.875761] libceph: mon0 (2)127.0.0.1:40674 session established [ 877.876130] libceph: client4614 fsid 19b90bca-f1ae-47a6-93dd-0b03ee637949 [ 877.991965] libceph: mon0 (2)127.0.0.1:40674 session established [ 877.992334] libceph: client4617 fsid 19b90bca-f1ae-47a6-93dd-0b03ee637949 [ 878.017234] libceph: mon0 (2)127.0.0.1:40674 session established [ 878.017594] libceph: client4620 fsid 19b90bca-f1ae-47a6-93dd-0b03ee637949 [ 878.031394] xfs_io (pid 18988) is setting deprecated v1 encryption policy; recommend upgrading to v2. [ 878.054528] libceph: mon0 (2)127.0.0.1:40674 session established [ 878.054892] libceph: client4623 fsid 19b90bca-f1ae-47a6-93dd-0b03ee637949 [ 878.070287] libceph: mon0 (2)127.0.0.1:40674 session established [ 878.070704] libceph: client4626 fsid 19b90bca-f1ae-47a6-93dd-0b03ee637949 [ 878.264586] libceph: mon0 (2)127.0.0.1:40674 session established [ 878.265258] libceph: client4629 fsid 19b90bca-f1ae-47a6-93dd-0b03ee637949 [ 878.374578] -----------[ cut here ]------------ [ 878.374586] kernel BUG at net/ceph/messenger.c:1070! [ 878.375150] Oops: invalid opcode: 0000 [#1] PREEMPT SMP NOPTI [ 878.378145] CPU: 2 UID: 0 PID: 4759 Comm: kworker/2:9 Not tainted 6.13.0-rc5+ #1 [ 878.378969] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 878.380167] Workqueue: ceph-msgr ceph_con_workfn [ 878.381639] RIP: 0010:ceph_msg_data_cursor_init+0x42/0x50 [ 878.382152] Code: 89 17 48 8b 46 70 55 48 89 47 08 c7 47 18 00 00 00 00 48 89 e5 e8 de cc ff ff 5d 31 c0 31 d2 31 f6 31 ff c3 cc cc cc cc 0f 0b <0f> 0b 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 [ 878.383928] RSP: 0018:ffffb4ffc7cbbd28 EFLAGS: 00010287 [ 878.384447] RAX: ffffffff82bb9ac0 RBX: ffff981390c2f1f8 RCX: 0000000000000000 [ 878.385129] RDX: 0000000000009000 RSI: ffff981288232b58 RDI: ffff981390c2f378 [ 878.385839] RBP: ffffb4ffc7cbbe18 R08: 0000000000000000 R09: 0000000000000000 [ 878.386539] R10: 0000000000000000 R11: 0000000000000000 R12: ffff981390c2f030 [ 878.387203] R13: ffff981288232b58 R14: 0000000000000029 R15: 0000000000000001 [ 878.387877] FS: 0000000000000000(0000) GS:ffff9814b7900000(0000) knlGS:0000000000000000 [ 878.388663] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 878.389212] CR2: 00005e106a0554e0 CR3: 0000000112bf0001 CR4: 0000000000772ef0 [ 878.389921] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 878.390620] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 878.391307] PKRU: 55555554 [ 878.391567] Call Trace: [ 878.391807] <TASK> [ 878.392021] ? show_regs+0x71/0x90 [ 878.392391] ? die+0x38/0xa0 [ 878.392667] ? do_trap+0xdb/0x100 [ 878.392981] ? do_error_trap+0x75/0xb0 [ 878.393372] ? ceph_msg_data_cursor_init+0x42/0x50 [ 878.393842] ? exc_invalid_op+0x53/0x80 [ 878.394232] ? ceph_msg_data_cursor_init+0x42/0x50 [ 878.394694] ? asm_exc_invalid_op+0x1b/0x20 [ 878.395099] ? ceph_msg_data_cursor_init+0x42/0x50 [ 878.395583] ? ceph_con_v2_try_read+0xd16/0x2220 [ 878.396027] ? _raw_spin_unlock+0xe/0x40 [ 878.396428] ? raw_spin_rq_unlock+0x10/0x40 [ 878.396842] ? finish_task_switch.isra.0+0x97/0x310 [ 878.397338] ? __schedule+0x44b/0x16b0 [ 878.397738] ceph_con_workfn+0x326/0x750 [ 878.398121] process_one_work+0x188/0x3d0 [ 878.398522] ? __pfx_worker_thread+0x10/0x10 [ 878.398929] worker_thread+0x2b5/0x3c0 [ 878.399310] ? __pfx_worker_thread+0x10/0x10 [ 878.399727] kthread+0xe1/0x120 [ 878.400031] ? __pfx_kthread+0x10/0x10 [ 878.400431] ret_from_fork+0x43/0x70 [ 878.400771] ? __pfx_kthread+0x10/0x10 [ 878.401127] ret_from_fork_asm+0x1a/0x30 [ 878.401543] </TASK> [ 878.401760] Modules l ---truncated---
総合評価: CVE-2025-38223 は低リスク（22.3/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 0.09%、1 パーセンタイル） 推奨対応: 悪用情報と EPSS の推移を監視し、必要に応じて優先度を見直してください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置（高いほど相対的に深刻）を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ（新 − 旧） |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.01% | 0.09% | +0.08% |
| 2 | 2025-07-05 | — | 0.01% | — |
EPSS の全履歴 （全 2 件）
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 5.5 | 3.1 | MEDIUM |
|
1.8 | 3.6 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2025-38223 unimportant priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2025-38223 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2025-38223 |
suse
|
medium | CVE-2025-38223 severity moderate: SUSE including 26 source package names (cluster-md-kmp-default, dlm-kmp-default, …), 281 product×package rows across 55 product lines (SLES-LTSS-TERADATA 15 SP2, SUSE Linux Enterprise High Availability Extension 15 SP7, … (55 product lines)): Known Not Affected 281. | https://www.suse.com/security/cve/CVE-2025-38223/ |
ubuntu
|
medium | CVE-2025-38223 medium priority: Ubuntu including 158 source packages (linux, linux-allwinner-5.19, …), 1551 status rows across 10 suites (bionic, focal, jammy, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 1145, ignored 151, not-affected 145, released 108, needs-triage 2. | https://ubuntu.com/security/CVE-2025-38223 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| linux | linux_kernel | >= 6.12, < 6.12.35 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 6.13, < 6.15.4 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |