CVE-2021-25900

CRITICAL9.8EPSS 0.53%

Buffer overflow in SmallVec::insert_many

發布日:2022/5/24修改日:2023/11/8
也稱為:GHSA-43w2-9j62-hq99RUSTSEC-2021-0003

描述

A bug in the `SmallVec::insert_many` method caused it to allocate a buffer that was smaller than needed. It then wrote past the end of the buffer, causing a buffer overflow and memory corruption on the heap. This bug was only triggered if the iterator passed to `insert_many` yielded more items than the lower bound returned from its `size_hint` method. The flaw was corrected in smallvec 0.6.14 and 1.6.1, by ensuring that additional space is always reserved for each item inserted. The fix also simplified the implementation of `insert_many` to use less unsafe code, so it is easier to verify its correctness. Thank you to Yechan Bae (@Qwaz) and the Rust group at Georgia Tech’s SSLab for finding and reporting this bug.

受影響套件(3)

CVSS 分數

來源版本嚴重程度向量
osvCVSS 3.1CRITICAL9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

參考連結(8)