Vulnerability · Published Jan 22, 2021 · Assigned by mitre
CVE-2021-25900
Critical 9.8
In plain English
A critical-severity security flaw in the rust-smallvec package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 78% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)9.8Critical
Exploit odds (30 days)1.7%top 22.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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 & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | rust-smallvec | 1.4.2-2 | DEBIAN-CVE-2021-25900 |
| Debian:13 | rust-smallvec | 1.4.2-2 | DEBIAN-CVE-2021-25900 |
| Debian:14 | rust-smallvec | 1.4.2-2 | DEBIAN-CVE-2021-25900 |
| Ubuntu:22.04:LTS | rust-smallvec | no fix listed | UBUNTU-CVE-2021-25900 |
| Ubuntu:24.04:LTS | rust-smallvec | no fix listed | UBUNTU-CVE-2021-25900 |
| Ubuntu:25.10 | rust-smallvec | no fix listed | UBUNTU-CVE-2021-25900 |
| Ubuntu:26.04:LTS | rust-smallvec | no fix listed | UBUNTU-CVE-2021-25900 |
| Ubuntu:26.10 | rust-smallvec | no fix listed | UBUNTU-CVE-2021-25900 |
Affected products (as reported)
References
- https://rustsec.org/advisories/RUSTSEC-2021-0003.html x_refsource_MISC