void ecryptfs_put_lower_file(struct inode *inode)
{
	struct ecryptfs_inode_info *inode_info;

	inode_info = ecryptfs_inode_to_private(inode);
	if (atomic_dec_and_mutex_lock(&inode_info->lower_file_count,
				      &inode_info->lower_file_mutex)) {
		fput(inode_info->lower_file);
		inode_info->lower_file = NULL;
		mutex_unlock(&inode_info->lower_file_mutex);
	}
}

This category addresses vulnerabilities caused by flawed access control mechanisms, where incorrect permission settings allow unauthorized users to access restricted resources.