Rust advisories / calamine
Vulnerability CriticalRUSTSEC-2021-0015 · calamine
RUSTSEC-2021-0015: `Sectors::get` accesses unclaimed/uninitialized memory
Short answerA security vulnerability in the calamine crate: `Sectors::get` accesses unclaimed/uninitialized memory. Critical severity (CVSS 9.8). Fixed in 0.17.0: update to a fixed version.
| Crate | calamine |
|---|---|
| Type | Vulnerability (memory-corruption, memory-exposure) |
| Affected versions | Before 0.17.0. |
| Fixed in | 0.17.0 |
| Severity | Critical, CVSS 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Published | 2021-01-06 |
| Last changed | 2023-11-08 |
| Also known as | CVE-2021-26951, GHSA-ppqp-78xx-3r38 |
What to do
- See which version you have:
cargo tree -i calamine(it also shows which of your dependencies pulls it in). - Update within your version requirement:
cargo update -p calamine. If the fix is a newer major or minor than your requirement allows, raise it in Cargo.toml (for examplecalamine = "0.17.0") 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
Affected versions of this crate arbitrarily calls Vec::set_len to increase length of a vector without claiming more memory for the vector. Affected versions of this crate also calls user-provided Read on the uninitialized memory of the vector that was extended with Vec::set_len.
This can overwrite active entities in adjacent heap memory and seems to be a major security issue. Also, calling user-provided Read on uninitialized memory is defined as UB in Rust.
References
- Package: crates.io/crates/calamine
- Advisory: rustsec.org/advisories/RUSTSEC-2021-0015.html
- Report: github.com/tafia/calamine/issues/199
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?