- 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
- High
- Integrity
- High
- Availability
- 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.