Incorrect buffer size in crossbeam-channel

The affected version of this crate's the bounded channel incorrectly assumes that Vec::fromiter has allocated capacity that same as the number of iterator elements. Vec::fromiter does not actually guarantee that and may allocate extra memory. The destructor of the bounded channel reconstructs Vec...

Null pointer dereference

Crossbeam is a set of tools for concurrent programming. In crossbeam-channel before version 0.4.4, the bounded channel incorrectly assumes that Vec::fromiter has allocated capacity that same as the number of iterator elements. Vec::fromiter does not actually guarantee that and may allocate extra...

CVE-2020-15254

CVE-2020-15254 concerns Crossbeam-channel’s bounded channel in versions before 0.4.4. The root cause is an unsound assumption: Vec::from_iter may not allocate capacity equal to the number of iterator elements, causing the bounded channel’s destructor to reconstruct a Vec with an incorrect capacit...