GHSA-mf4f-2vjv-3rq6 · 深刻度： medium — A flaw was found in grub2. When performing a symlink lookup from a reiserfs filesystem, grub's...
A flaw was found in grub2. When performing a symlink lookup from a reiserfs filesystem, grub's reiserfs fs module uses user-controlled parameters from the filesystem geometry to determine the internal buffer size, however, it improperly checks for integer overflows. A maliciouly crafted filesystem may lead some of those buffer size calculations to overflow, causing it to perform a grub_malloc() operation with a smaller size than expected. As a result, the grub_reiserfs_read_symlink() will call grub_reiserfs_read_real() with a overflown length parameter, leading to a heap based out-of-bounds write during data reading. This flaw may be leveraged to corrupt grub's internal critical data and can result in arbitrary code execution, by-passing secure boot protections.
総合評価: CVE-2025-0684 は低リスク（31.4/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 0.25%、17 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 | 2026-06-26 | 0.23% | 0.25% | +0.03% |
| 2 | 2026-06-15 | 0.03% | 0.23% | +0.20% |
| 3 | 2026-03-30 | — | 0.03% | — |
EPSS の全履歴 （全 7 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 |
|---|---|---|---|---|---|---|
| 6.4 | 3.1 | MEDIUM |
|
0.5 | 5.9 | [email protected] |
| 6.4 | 3.1 | MEDIUM |
|
0.5 | 5.9 | [email protected] |
GHSA-mf4f-2vjv-3rq6 · 深刻度： medium — A flaw was found in grub2. When performing a symlink lookup from a reiserfs filesystem, grub's...
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2025-0684 not yet assigned priority: Debian including 1 source packages (grub2), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 4, open 1. | https://security-tracker.debian.org/tracker/CVE-2025-0684 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2025-0684 |
suse
|
medium | CVE-2025-0684 severity moderate: SUSE including 376 source package names (2.0.4-5.8.146:grub2-2.06-150500.29.43.2, 2.0.4-5.8.146:grub2-i386-pc-2.06-150500.29.43.2, …), 1407 product×package rows across 291 product lines (Container suse/manager/5.0/x86_64/server, Container suse/sl-micro/6.0/base-os-container, … (291 product lines)): Fixed 1186, Known Affected 221. | https://www.suse.com/security/cve/CVE-2025-0684/ |
ubuntu
|
medium | CVE-2025-0684 medium priority: Ubuntu including 3 source packages (grub2, grub2-signed, grub2-unsigned), 29 status rows across 10 suites (bionic, focal, jammy, noble, oracular, plucky, questing, trusty, upstream, xenial): needs-triage 15, not-affected 8, ignored 6. | https://ubuntu.com/security/CVE-2025-0684 |
| URL | タグ |
|---|---|
| https://access.redhat.com/security/cve/CVE-2025-0684 | Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2346119 | Issue Tracking |
| https://lists.gnu.org/archive/html/grub-devel/2025-02/msg00024.html |