High, CVSS 7.8crates.ioPublished
Data races in conquer-once
CVE-2020-36208 · GHSA-3jc5-5hc5-33gj
- Affected
- crates.io conquer-once < 0.3.2
- Fixed in
- 0.3.2· Vendor fix available
- Issue
- Affected versions of conquer-once implements Sync for its OnceCell type without restricting it to Sendable types. This allows non-Send but Sync types such as MutexGuard to be sent across threads leading to undefined behavior and memory corruption in concurrent programs. The issue was fixed by adding a Send constraint to OnceCell.
Recommended action: Upgrade to 0.3.2 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.