High severity7.3NVD Advisory· Published Apr 1, 2021· Updated Jun 17, 2026
CVE-2021-29939
CVE-2021-29939
Description
An issue was discovered in the stackvector crate through 2021-02-19 for Rust. There is an out-of-bounds write in StackVec::extend if size_hint provides certain anomalous data.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
stackvectorcrates.io | < 1.0.9 | 1.0.9 |
Affected products
3- cpe:2.3:a:stackvector_project:stackvector:*:*:*:*:*:rust:*:*Range: <1.0.9
- Rust/stackvectordescription
Patches
Vulnerability mechanics
References
4- rustsec.org/advisories/RUSTSEC-2021-0048.htmlnvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-9frf-r7c7-j2vgghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2021-29939ghsaADVISORY
- github.com/Alexhuszagh/rust-stackvector/issues/2ghsaWEB
News mentions
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