RUSTSEC-2020-0151

Generators can cause data races if non-Send types are used in their generator functions

Issued
Package
generator (crates.io)
Type
Vulnerability
Categories
  • memory-corruption
Details
https://github.com/Xudong-Huang/generator-rs/issues/27
Patched
  • >=0.7.0
Keywords
  • concurrency

Description

The Generator type is an iterable which uses a generator function that yields values. In affected versions of the crate, the provided function yielding values had no Send bounds despite the Generator itself implementing Send.

The generator function lacking a Send bound means that types that are dangerous to send across threads such as Rc could be sent as part of a generator, potentially leading to data races.

This flaw was fixed in commit f7d120a3b by enforcing that the generator function be bound by Send.

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