11 vulnerabilities classified as CWE-413 (资源加锁不恰当). AI Chinese analysis included.
CWE-413 represents a concurrency weakness where a software product fails to acquire or maintain exclusive access to a shared resource during critical operations. This flaw typically arises when developers neglect to implement proper synchronization mechanisms, such as mutexes or semaphores, around code sections that modify or read shared data. Attackers exploit this vulnerability by triggering race conditions, allowing them to interleave malicious operations with legitimate processes. By modifying the resource while it is being processed, the attacker violates the application’s assumptions about data integrity, potentially leading to unexpected behaviors, data corruption, or denial of service. To prevent this, developers must rigorously implement locking protocols that ensure atomicity and consistency. This involves identifying all shared resources and applying appropriate locks to guarantee that only one thread can access the resource at a time, thereby eliminating the window for concurrent exploitation.
void f(pthread_mutex_t *mutex) { pthread_mutex_lock(mutex); /* access shared resource */ pthread_mutex_unlock(mutex); }int f(pthread_mutex_t *mutex) { int result; result = pthread_mutex_lock(mutex); if (0 != result) return result; /* access shared resource */ return pthread_mutex_unlock(mutex); }public class BankAccount { // variable for bank account balance private double accountBalance; // constructor for BankAccount public BankAccount() { accountBalance = 0; } // method to deposit amount into BankAccount public void deposit(double depositAmount) { double newBalance = accountBalance + depositAmount; accountBalance = newBalance; } // method to withdraw amount from BankAccount public void withdraw(double withdrawAmount) { double newBalance = accountBalance - withdrawAmount; accountBalance = newBalance; } // other methods for accessing the BankAccount object ... }public class BankAccount { ... // synchronized method to deposit amount into BankAccount public synchronized void deposit(double depositAmount) { ... } // synchronized method to withdraw amount from BankAccount public synchronized void withdraw(double withdrawAmount) { ... } ... }Vulnerabilities classified as CWE-413 (资源加锁不恰当) represent 11 CVEs. The CWE taxonomy describes the weakness; review individual CVEs for product-specific impact.