| Summary | smallbitvec is a growable bit-vector for Rust, optimized for size. From 1.0.1 to 2.6.0, an integer overflow in the internal capacity calculation of smallbitvec can lead to an undersized heap allocation, resulting in a heap buffer overflow through safe APIs only. This allows memory corruption without requiring unsafe code from the caller. This vulnerability is fixed in 2.6.1. |
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| Publication Date | May 27, 2026, 7:16 a.m. |
| Registration Date | May 28, 2026, 4:09 a.m. |
| Last Update | May 27, 2026, 11:16 p.m. |
| CVSS3.1 : HIGH | |
| スコア | 7.3 |
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| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H |
| 攻撃元区分(AV) | ローカル |
| 攻撃条件の複雑さ(AC) | 低 |
| 攻撃に必要な特権レベル(PR) | 不要 |
| 利用者の関与(UI) | 不要 |
| 影響の想定範囲(S) | 変更なし |
| 機密性への影響(C) | 低 |
| 完全性への影響(I) | 低 |
| 可用性への影響(A) | 高 |