A flaw was found in the Linux kernel, where unauthorized access to the execution of the setuid file with capabilities was found in the Linux kernel’s OverlayFS subsystem in how a user copies a capable file from a nosuid mount into another mount. This uid mapping bug allows a local user to escalate their privileges on the system.
総合評価: CVE-2023-0386 は在野悪用が確認された重大脅威(84.1/100)。CVSS 深刻度は高。悪用される可能性が高い(EPSS 7.88%、94 パーセンタイル) 根拠: CISA KEV に登録(追加日 2025-06-17)。Linux / Kernel が対象で、弱点分類 CWE-282の悪用が確認されています。未認証でリモート管理権限を奪取されるリスクが極めて高い。 推奨対応: CISA の対応期限を過ぎています。緊急のパッチ適用を最優先に検討してください。
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。
: Linux Kernel Improper Ownership Management Vulnerability · CISA KEV の詳細
: 2025-06-17
: 2025-07-08
: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
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 | 48.52% | 7.88% | -40.64% |
| 2 | 2026-06-06 | 50.62% | 48.52% | -2.10% |
| 3 | 2026-06-01 | — | 50.62% | — |
EPSS の全履歴 (全 88 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 |
|---|---|---|---|---|---|---|
| 7.8 | 3.1 | HIGH |
|
1.8 | 5.9 | [email protected] |
| 7.8 | 3.1 | HIGH |
|
1.8 | 5.9 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2023-0386 not yet assigned 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-2023-0386 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2023-0386 |
suse
|
high | CVE-2023-0386 severity important: SUSE including 465 source package names (1.2.3-2.2.63:kernel-rt-5.14.21-150400.15.28.2, 2.0.2-3.2.23:kernel-rt-5.14.21-150500.13.5.1, …), 864 product×package rows across 150 product lines (Container rancher/elemental-teal-rt/5.4, Container suse/sle-micro-rancher/5.3, … (150 product lines)): Fixed 536, Known Not Affected 172, Known Affected 156. | https://www.suse.com/security/cve/CVE-2023-0386/ |
ubuntu
|
high | CVE-2023-0386 high priority: Ubuntu including 135 source packages (linux, linux-allwinner, …), 1259 status rows across 11 suites (bionic, focal, jammy, kinetic, lunar, mantic, noble, oracular, trusty, upstream, xenial): DNE 889, released 152, not-affected 142, ignored 76. | https://ubuntu.com/security/CVE-2023-0386 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| debian | debian_linux | 10.0 | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
| netapp | h300s_firmware | — | cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:* |
| netapp | h500s_firmware | — | cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:* |
| netapp | h700s_firmware | — | cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:* |
| netapp | h410s_firmware | — | cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:* |
| netapp | h410c_firmware | — | cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 18.04 | cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 20.04 | cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 22.04 | cpe:2.3:o:canonical:ubuntu_linux:22.04:*:*:*:lts:*:*:* |
| linux | linux_kernel | >= 5.11, < 5.15.91 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 5.16, < 6.1.9 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | 6.2 | cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:* |
| linux | linux_kernel | 6.2 | cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:* |
| linux | linux_kernel | 6.2 | cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:* |
| linux | linux_kernel | 6.2 | cpe:2.3:o:linux:linux_kernel:6.2:rc4:*:*:*:*:*:* |
| linux | linux_kernel | 6.2 | cpe:2.3:o:linux:linux_kernel:6.2:rc5:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html | Third Party Advisory |
| https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f11ada10d0a | Broken Link Mailing List Patch Vendor Advisory |
| https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html | Mailing List Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html | Mailing List Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20230420-0004/ | Third Party Advisory |
| https://www.debian.org/security/2023/dsa-5402 | Third Party Advisory |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-0386 | US Government Resource |