Rust advisories / cryptoki
VulnerabilityRUSTSEC-2026-0286 · cryptoki
RUSTSEC-2026-0286: Out-of-bounds read when decoding CKA_ALLOWED_MECHANISMS
Short answerA security vulnerability in the cryptoki crate: Out-of-bounds read when decoding CKA_ALLOWED_MECHANISMS. No severity score was published. Fixed in 0.10.1, 0.11.1, 0.12.1: update to a fixed version.
| Crate | cryptoki |
|---|---|
| Type | Vulnerability (memory-exposure) |
| Affected versions | Before 0.10.1; from 0.11.0 before 0.11.1; from 0.12.0 before 0.12.1. |
| Fixed in | 0.10.1, 0.11.1, 0.12.1 |
| Severity | not scored |
| Published | 2026-09-16 |
| Last changed | 2026-09-17 |
| Also known as | GHSA-r6vc-97x9-63vv |
What to do
- See which version you have:
cargo tree -i cryptoki(it also shows which of your dependencies pulls it in). - Update within your version requirement:
cargo update -p cryptoki. If the fix is a newer major or minor than your requirement allows, raise it in Cargo.toml (for examplecryptoki = "0.12.1") 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
cryptoki treated the CKA_ALLOWED_MECHANISMS ulValueLen byte count as a CK_MECHANISM_TYPE element count. A valid nonempty attribute returned through the safe Session::get_attributes API could cause construction of an out-of-bounds slice and undefined behavior.
Possible consequences include a process crash or denial of service and potential disclosure of adjacent heap words. Upgrade to the fixed patch release for the cryptoki 0.10, 0.11, or 0.12 line.
References
- Package: crates.io/crates/cryptoki
- Advisory: rustsec.org/advisories/RUSTSEC-2026-0286.html
- Web: github.com/parallaxsecond/rust-cryptoki/pull/368
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
Are you affected?Check your whole dependency treePaste Cargo.lock: every advisory, for your exact versions.Read it next →Also worth your time
Did this answer your question?