- Reported
-
- Issued
-
- Package
-
signal-simple
(crates.io)
- Type
-
Vulnerability
- Categories
-
- Aliases
-
- References
-
- CVSS Score
- 8.1
HIGH
- CVSS Details
-
- Attack Vector
- Network
- Attack Complexity
- High
- Privileges Required
- None
- User Interaction
- None
- Scope
- Unchanged
- Confidentiality Impact
- High
- Integrity Impact
- High
- Availability Impact
- High
- CVSS Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Patched
-
no patched versions
Description
Affected versions of this crate unconditionally implement Send/Sync for SyncChannel<T>.
SyncChannel<T> doesn't provide access to &T but merely serves as a channel that consumes and returns owned T.
Users can create UB in safe Rust by sending T: !Send to other threads with SyncChannel::send/recv APIs. Using T = Arc<Cell<_> allows to create data races (which can lead to memory corruption), and using T = MutexGuard<T> allows to unlock a mutex from a thread that didn't lock the mutex.
Advisory available under CC0-1.0
license.