GHSA-4hjg-cx88-g9f9
Data races in futures-intrusive
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| crates.io | futures-intrusive | < 0.4.0 | 0.4.0 |
Details
As written in the advisory (Markdown source, shown as plain text).
GenericMutexGuard<T> was given the Sync auto trait as long as T is Send due to its contained members. However, since the guard is supposed to represent an acquired lock and allows concurrent access to the underlying data from different threads, it should only be Sync when the underlying data is.
This is a soundness issue and allows data races, potentially leading to crashes and segfaults from safe Rust code.
The flaw was corrected by adding a T: Send + Sync bound for GenericMutexGuard's Sync trait.
References
External links from the advisory. They lead to third-party sites.