GHSA-wh6w-3828-g9qf · 深刻度: high · エコシステム: rust — Wasmtime may have data leakage between instances in the pooling allocator
Wasmtime is a standalone runtime for WebAssembly. Prior to versions 2.0.2 and 1.0.2, there is a bug in Wasmtime's implementation of its pooling instance allocator where when a linear memory is reused for another instance the initial heap snapshot of the prior instance can be visible, erroneously to the next instance. This bug has been patched and users should upgrade to Wasmtime 2.0.2 and 1.0.2. Other mitigations include disabling the pooling allocator and disabling the `memory-init-cow`.
総合評価: CVE-2022-39393 は中リスク(50.7/100)。CVSS 深刻度は高。悪用される可能性が高い(EPSS 0.66%、46 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 | 0.59% | 0.66% | +0.06% |
| 2 | 2026-06-10 | 0.32% | 0.59% | +0.27% |
| 3 | 2025-11-18 | — | 0.32% | — |
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 |
|---|---|---|---|---|---|---|
| 8.6 | 3.1 | HIGH |
|
3.9 | 4.0 | [email protected] |
| 8.6 | 3.1 | HIGH |
|
3.9 | 4.0 | [email protected] |
GHSA-wh6w-3828-g9qf · 深刻度: high · エコシステム: rust — Wasmtime may have data leakage between instances in the pooling allocator
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2022-39393 unimportant priority: Debian including 1 source packages (rust-wasmtime), 3 status rows across 3 suites (forky, sid, trixie): resolved 3. | https://security-tracker.debian.org/tracker/CVE-2022-39393 |
ubuntu
|
medium | CVE-2022-39393 medium priority: Ubuntu including 7 source packages (firefox, mozjs38, …), 58 status rows across 10 suites (bionic, focal, jammy, kinetic, lunar, mantic, noble, trusty, upstream, xenial): DNE 27, ignored 24, not-affected 5, needs-triage 2. | https://ubuntu.com/security/CVE-2022-39393 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| bytecodealliance | wasmtime | < 1.0.2 | cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:rust:*:* |
| bytecodealliance | wasmtime | >= 2.0.0, < 2.0.2 | cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:rust:*:* |
| URL | タグ |
|---|---|
| https://github.com/bytecodealliance/wasmtime/commit/2614f2e9d2d36805ead8a8da0fa0c6e0d9e428a0 | Patch Third Party Advisory |
| https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-wh6w-3828-g9qf | Third Party Advisory |