Even if an element is popped from a queue, crossbeam would run its destructor inside the epoch-based garbage collector. This is a source of double frees.
The flaw was corrected by wrapping elements inside queues in a ManuallyDrop.
{ "nvd_published_at": "2019-08-26T18:15:11Z", "cwe_ids": [ "CWE-415" ], "severity": "CRITICAL", "github_reviewed": true, "github_reviewed_at": "2021-08-19T21:24:34Z" }