CVE-2025-47735 in wgp
Summary
by MITRE • 05/09/2025
inner::drop in inner.rs in the wgp crate through 0.2.0 for Rust lacks drop_slow thread synchronization.
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Analysis
by VulDB Data Team • 01/31/2026
The vulnerability identified as CVE-2025-47735 resides within the wgp crate version 0.2.0 and earlier, specifically affecting the inner::drop function implementation in the inner.rs file. This issue represents a critical thread synchronization flaw that can lead to memory safety violations and potential system instability. The wgp crate is designed for Rust-based applications and provides functionality related to group operations and memory management. The flaw manifests in the drop_slow function which handles the cleanup of resources when objects are dropped from memory, indicating a failure to properly synchronize concurrent access to shared resources during destruction phases.
The technical root cause of this vulnerability stems from inadequate thread synchronization mechanisms within the drop_slow function implementation. When multiple threads attempt to simultaneously access or destroy shared resources, the lack of proper synchronization primitives such as mutexes, atomic operations, or other concurrency controls creates a race condition scenario. This condition allows for potential data corruption, memory leaks, or undefined behavior when the garbage collection process attempts to clean up objects. The vulnerability specifically impacts the inner::drop function which is responsible for ensuring proper resource deallocation and cleanup. According to CWE standards, this maps to CWE-362: Concurrent Execution Using Shared Resource with Improper Synchronization, which directly addresses the lack of proper synchronization in multi-threaded environments.
The operational impact of this vulnerability extends beyond simple memory management issues to potentially compromise the entire application stability and security posture. In multi-threaded applications utilizing the wgp crate, concurrent access to shared resources during destruction phases could result in memory corruption, application crashes, or even privilege escalation if the affected memory regions are used for critical system operations. Attackers could potentially exploit this race condition to perform memory corruption attacks or cause denial of service conditions that would affect the availability of services relying on this crate. The vulnerability affects any Rust application that utilizes the wgp crate version 0.2.0 or earlier, particularly those operating in high-concurrency environments where multiple threads simultaneously interact with shared objects.
Mitigation strategies for this vulnerability should prioritize immediate version updates to the wgp crate beyond version 0.2.0 where the synchronization issues have been addressed. System administrators and developers should conduct comprehensive code reviews to identify all applications utilizing the affected crate and ensure proper dependency management practices are implemented. The implementation of proper synchronization primitives such as std::sync::Mutex or std::sync::RwLock should be enforced in any custom drop implementations. Additionally, comprehensive testing including race condition detection tools and memory safety analyzers should be employed to validate the fix. According to ATT&CK framework, this vulnerability could be categorized under T1499.004: Endpoint Denial of Service, as it could lead to application instability and service disruption. Organizations should also implement monitoring solutions to detect anomalous behavior patterns that might indicate exploitation attempts, particularly in environments where the vulnerable crate is actively used in production systems.