Reported

July 17, 2025

Issued

July 17, 2025

Package

static_cell (crates.io)

Type

INFO Unsound

Categories

• memory-exposure
• memory-corruption

Keywords

#send #thread-safety

References

• https://github.com/embassy-rs/static-cell/issues/19

Patched

• >=2.1.1

Unaffected

• <=2.0.0

Affected Functions

Version

static_cell::ConstStaticCell::new

• =2.1.0

Description

ConstStaticCell<T> could have been used to pass non-Send values to another thread, because T was not required to be Send while ConstStaticCell is Send.

This was corrected by introducing a T: Send bound.

Advisory available under CC0-1.0 license.