CVE-2026-25541

Bytes is a utility library for working with bytes. From version 1.2.1 to before 1.11.1, Bytes is vulnerable to integer overflow in BytesMut::reserve. In the unique reclaim path of BytesMut::reserve, if the condition "vcapacity = newcap + offset" uses an unchecked addition. When newcap + offset...

GHSA-434X-W66G-QW3R bytes has integer overflow in BytesMut::reserve

Details In the unique reclaim path of BytesMut::reserve, the condition rs if vcapacity = newcap + offset uses an unchecked addition. When newcap + offset overflows usize in release builds, this condition may incorrectly pass, causing self.cap to be set to a value that exceeds the actual allocated...