In util-linux before 2.32-rc1, bash-completion/umount allows local users to gain privileges by embedding shell commands in a mountpoint name, which is mishandled during a umount command (within Bash) by a different user, as demonstrated by logging in as root and entering umount followed by a tab character for autocompletion.
総合評価: CVE-2018-7738 は中リスク（44.2/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 0.46%、36 パーセンタイル） 推奨対応: 影響資産を整理し、修補計画に組み込んでください。
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 | 0.05% | 0.46% | +0.40% |
| 2 | 2025-11-21 | 0.05% | 0.05% | +0.01% |
| 3 | 2025-11-18 | — | 0.05% | — |
EPSS の全履歴 （全 9 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 | 3.0 | HIGH |
|
1.8 | 5.9 | [email protected] |
| 7.2 | 2.0 | HIGH |
|
3.9 | 10.0 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2018-7738 unimportant priority: Debian including 2 source packages (bash-completion, util-linux), 10 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 5, resolved 5. | https://security-tracker.debian.org/tracker/CVE-2018-7738 |
gentoo
|
high | CVE-2018-7738: 1 GLSA(s) (201803-02), 1 atom(s) (sys-apps/util-linux); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2018-7738 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2018-7738 |
suse
|
high | CVE-2018-7738 severity important: SUSE including 541 source package names (0.9.1:libblkid1-2.29.2-3.8.1, 0.9.1:libfdisk1-2.29.2-3.8.1, …), 1021 product×package rows across 97 product lines (Container caasp/v4/cilium, Container caasp/v4/cilium-operator, … (97 product lines)): Fixed 740, Known Affected 231, Known Not Affected 50. | https://www.suse.com/security/cve/CVE-2018-7738/ |
ubuntu
|
negligible | CVE-2018-7738 negligible priority: Ubuntu including 2 source packages (bash-completion, util-linux), 18 status rows across 9 suites (artful, bionic, cosmic, disco, eoan, focal, trusty, upstream, xenial): not-affected 10, ignored 5, released 2, needs-triage 1. | https://ubuntu.com/security/CVE-2018-7738 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| kernel | util-linux | <= 2.31 | cpe:2.3:a:kernel:util-linux:*:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| http://www.securityfocus.com/bid/103367 | Third Party Advisory VDB Entry |
| https://bugs.debian.org/892179 | Patch Third Party Advisory |
| https://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55 | Patch Third Party Advisory |
| https://github.com/karelzak/util-linux/issues/539 | Issue Tracking Third Party Advisory |
| https://usn.ubuntu.com/4512-1/ | |
| https://www.debian.org/security/2018/dsa-4134 | Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20241213-0002/ |