CVE-2021-25900

An issue was discovered in the smallvec crate before 0.6.14 and 1.x be ...

Published 26 Jan 2021Modified 17 Jun 2026CWE 787

In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

GHSA9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by NVD, GHSA. Rated lower by Ubuntu (medium).

Description

An issue was discovered in the smallvec crate before 0.6.14 and 1.x before 1.6.1 for Rust. There is a heap-based buffer overflow in SmallVec::insert_many.

Affected packages and fixed versions

Source	Package	Fixed in
cargo::GitHub Security Advisory Rust	smallvec	0.6.14, 1.6.1
debian 10	rust-smallvec	no fix listed
debian 11	rust-smallvec	1.4.2-2
debian 12	rust-smallvec	1.4.2-2
debian 13	rust-smallvec	1.4.2-2
debian 14	rust-smallvec	1.4.2-2
echo	rust-smallvec	1.4.2-2
ubuntu 20.04-ESM	rust-smallvec	no fix listed
ubuntu 22.04	rust-smallvec	no fix listed
ubuntu 24.04	rust-smallvec	no fix listed
ubuntu 26.04	rust-smallvec	no fix listed
ubuntu 26.10	rust-smallvec	no fix listed

References

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Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.