CVE-2020-36445

CVE-2020-36445 is a high-severity race condition vulnerability in convec (rust), affecting versions <= 2.0.1. No fixed version is listed yet.

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Summary

Data races in convec

Affected versions of this crate unconditionally implement Send/Sync for ConVec<T>.
This allows users to insert T that is not Send or not Sync.

This allows users to create data races by using non-Send types like Arc<Cell<_>> or Rc<_> as T in ConVec<T>. It is also possible to create data races by using types like Cell<_> or RefCell<_> as T (types that are Send but not Sync).
Such data races can lead to memory corruption.

Impact

Multiple concurrent operations access a shared resource without proper synchronization, producing unpredictable results depending on timing. Typical impact: TOCTOU exploits, data corruption, or privilege escalation.

CVE-2020-36445 has a CVSS score of 8.1 (High). The vector is network-reachable, no privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. No fixed version is listed yet, so configuration controls and monitoring matter more in the interim.

Affected versions

convec (<= 2.0.1)

Security releases

Not available

Kodem intelligence

Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.

Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.

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Remediation advice

No fixed version is listed for CVE-2020-36445 yet.

In the interim: Keep the dependency up to date. In application code, use atomic operations or locks when accessing shared state.

Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.

Frequently Asked Questions

  1. What is CVE-2020-36445? CVE-2020-36445 is a high-severity race condition vulnerability in convec (rust), affecting versions <= 2.0.1. No fixed version is listed yet. Multiple concurrent operations access a shared resource without proper synchronization, producing unpredictable results depending on timing.
  2. How severe is CVE-2020-36445? CVE-2020-36445 has a CVSS score of 8.1 (High). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
  3. Which versions of convec are affected by CVE-2020-36445? convec (rust) versions <= 2.0.1 is affected.
  4. Is there a fix for CVE-2020-36445? No fixed version is listed for CVE-2020-36445 yet. Monitor the advisory for updates and apply mitigations in the interim.
  5. Is CVE-2020-36445 exploitable, and should I be worried? Whether CVE-2020-36445 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
  6. What actually determines whether CVE-2020-36445 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
  7. How do I fix CVE-2020-36445? No fixed version is listed yet. In the interim: Keep the dependency up to date. In application code, use atomic operations or locks when accessing shared state.

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