Rust advisories / inconceivable
NoticeRUSTSEC-2022-0058 · inconceivable
RUSTSEC-2022-0058: Library exclusively intended to inject UB into safe Rust.
Short answerLibrary exclusively intended to inject UB into safe Rust.
| Crate | inconceivable |
|---|---|
| Type | Notice |
| Affected versions | Every version. |
| Fixed in | none |
| Severity | not scored |
| Published | 2022-09-28 |
| Last changed | 2022-10-11 |
| Also known as | none |
What to do
- Find who pulls it in:
cargo tree -i inconceivable. - Avoid the affected API, or replace the crate.
Details from the advisory
Quoting from the crate description:
> This crate is created purely to inject undefined behavior into stable, safe rust.
Specifically, the inconceivable! macro is insta-UB if the ub_inconceivable feature is enabled by *any* reverse dependency. The value this adds is questionable, and hides unsafe code from naive analysis.
References
- Package: crates.io/crates/inconceivable
- Advisory: rustsec.org/advisories/RUSTSEC-2022-0058.html
From the RustSec Advisory Database (CC0-1.0) via the OSV export, downloaded Oct 24, 2026. Severity score computed from the published CVSS vector.
Up next
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