Affected versions of this crate unconditionally implemented Send & Sync for types PinSlab<T> & Unordered<T, S>. This allows sending non-Send types to other threads and concurrently accessing non-Sync types from multiple threads.
This can result in a data race & memory corruption when types that provide internal mutability without synchronization are contained within PinSlab<T> or Unordered<T, S> and accessed concurrently from multiple threads.
The flaw was corrected in commits 92f40b4 & 6a6c367 by adding trait bound T: Send to Send impls for PinSlab<T> & Unordered<T, S> and adding T: Sync to Sync impls for PinSlab<T> & Unordered<T, S>.
{
"cwe_ids": [
"CWE-119",
"CWE-362"
],
"github_reviewed": true,
"github_reviewed_at": "2021-08-18T20:15:26Z",
"nvd_published_at": "2021-08-08T06:15:00Z",
"severity": "HIGH"
}