Vulnerability MediumRUSTSEC-2021-0114 · nanorand
RUSTSEC-2021-0114: Aliased mutable references from `tls_rand` & `TlsWyRand`
Short answerA security vulnerability in the nanorand crate: Aliased mutable references from `tls_rand` & `TlsWyRand`. GitHub rates it Medium. Fixed in 0.6.1: update to a fixed version.
| Crate | nanorand |
|---|---|
| Type | Vulnerability |
| Affected versions | From 0.5.0 before 0.6.1. |
| Fixed in | 0.6.1 |
| Severity | Medium (GitHub rating) |
| Published | 2021-09-23 |
| Last changed | 2023-11-08 |
| Also known as | CVE-2021-45705, GHSA-p6gj-gpc8-f8xw, GHSA-r57r-j98g-587f |
| Affected functions | nanorand::tls::tls_rand |
What to do
- See which version you have:
cargo tree -i nanorand(it also shows which of your dependencies pulls it in). - Update within your version requirement:
cargo update -p nanorand. If the fix is a newer major or minor than your requirement allows, raise it in Cargo.toml (for examplenanorand = "0.6.1") or update the dependency that pulls it in. - Check again with
cargo audit, or paste your Cargo.lock into our Cargo.toml checker.
Details from the advisory
TlsWyRand's implementation of Deref unconditionally dereferences a raw pointer, and returns multiple mutable references to the same object, which is undefined behavior.
References
- Package: crates.io/crates/nanorand
- Advisory: rustsec.org/advisories/RUSTSEC-2021-0114.html
- Report: github.com/Absolucy/nanorand-rs/issues/28
From the RustSec Advisory Database (CC0-1.0) via the OSV export, downloaded Oct 24, 2026. Severity score computed from the published CVSS vector.
Other advisories for nanorand
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