RUSTSEC-2020-0117

QueueSender/QueueReceiver: Send/Sync impls need T: Send

Issued
Package
conqueue (crates.io)
Type
Vulnerability
Categories
  • memory-corruption
  • thread-safety
Details
https://github.com/longshorej/conqueue/issues/9
Patched
  • >=0.4.0

Description

Affected versions of this crate unconditionally implemented Send/Sync for QueueSender<T>, allowing to send non-Send T to other threads by invoking (&QueueSender<T>).send().

This fails to prevent users from creating data races by sending types like Rc<T> or Arc<Cell<T>> to other threads, which can lead to memory corruption.

The flaw was corrected in commit 1e462c3 by imposing T: Send to both Send/Sync impls for QueueSender<T>/QueueReceiver<T>.

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