In the Linux kernel, the following vulnerability has been resolved: ext4: verify orphan file size is not too big In principle orphan file can be arbitrarily large. However orphan replay needs to traverse it all and we also pin all its buffers in memory. Thus filesystems with absurdly large orphan files can lead to big amounts of memory consumed. Limit orphan file size to a sane value and also use kvmalloc() for allocating array of block descriptor structures to avoid large order allocations for sane but large orphan files.
総合評価: CVE-2025-40179 は低リスク(7.8/100)。悪用される可能性が高い(EPSS 0.18%、8 パーセンタイル) 推奨対応: 総合リスクは低く緊急対応は不要です。通常の保守サイクルでパッチを適用し、CVSS / EPSS が上昇したら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 | 0.02% | 0.18% | +0.15% |
| 2 | 2025-11-13 | — | 0.02% | — |
EPSS の全履歴 (全 2 件)
この CVE の CVSS 指標。
この CVE のデータセットに CVSS はありません。
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2025-40179 unimportant priority: Debian including 2 source packages (linux, linux-6.1), 6 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 6. | https://security-tracker.debian.org/tracker/CVE-2025-40179 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2025-40179 |
suse
|
medium | CVE-2025-40179 severity moderate: SUSE including 468 source package names (13.2-9.1:libsystemd0-254.23-1.1, 13.2-9.1:libudev1-254.23-1.1, …), 1094 product×package rows across 194 product lines (Container suse/sl-micro/6.0/baremetal-os-container, Container suse/sl-micro/6.0/base-os-container, … (194 product lines)): Fixed 643, Known Affected 231, Known Not Affected 195, First Fixed 25. | https://www.suse.com/security/cve/CVE-2025-40179/ |
ubuntu
|
medium | CVE-2025-40179 medium priority: Ubuntu including 157 source packages (linux, linux-allwinner-5.19, …), 1405 status rows across 9 suites (bionic, focal, jammy, noble, plucky, questing, trusty, upstream, xenial): DNE 1010, ignored 177, released 158, not-affected 49, needed 8, pending 3. | https://ubuntu.com/security/CVE-2025-40179 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| linux | linux_kernel | >= 5.15, < 5.15.195 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 5.15, < 6.1.157 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 5.15, < 6.6.113 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 5.15, < 6.12.54 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 5.15, < 6.17.4 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 5.15, < 6.18 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |