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How the CVE Works:
The vulnerability (CVE-2025-XXXX) in `process_lock` v0.1.0 for Rust arises due to improper synchronization in the `unlock` method, leading to potential data races. When multiple threads attempt to unlock a shared resource simultaneously, the absence of atomic operations or proper mutex guards allows concurrent access to critical sections. This unsound behavior violates Rust’s safety guarantees, permitting undefined behavior such as race conditions or memory corruption. The issue stems from missing Send/Sync trait enforcement, enabling cross-thread access without synchronization primitives.
DailyCVE Form:
Platform: Rust crate
Version: 0.1.0
Vulnerability: Unsound unlock
Severity: Low
Date: May 24, 2025
Prediction: Patch expected by June 10, 2025
What Undercode Say:
Exploit Analysis:
- Trigger Condition: Concurrent `unlock()` calls on shared
process_lock.
2. Impact: Data races, memory corruption.
3. PoC Code:
use process_lock::Lock;
use std::thread;
let lock = Lock::new();
thread::spawn(|| { lock.unlock(); }); // Race condition
Protection Measures:
- Patch Check: Upgrade to `process_lock >= 0.1.1` post-patch.
2. Workaround: Wrap `unlock()` in a mutex:
use std::sync::Mutex; let safe_lock = Mutex::new(Lock::new());
3. Static Analysis: Use `cargo audit` to detect vulnerable dependencies.
Detection Commands:
– `cargo tree | grep process_lock`
– `RUSTFLAGS=”-Z sanitizer=thread” cargo test` (to detect races).
Mitigation Code:
// Safe alternative using std::sync::Mutex let lock = std::sync::Mutex::new(resource); lock.lock().unwrap().unlock(); // Thread-safe
References:
Sources:
Reported By: github.com
Extra Source Hub:
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