HIGH7.8
GHSA-3jc5-5hc5-33gj
Data races in conquer-once
Details
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.
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Affected packages
crates.io/conquer-once
Introduced in:
0Fixed in: 0.3.2Upgrade conquer-once to 0.3.2 or newer (ecosystem crates.io).