int evm_inode_setxattr(struct dentry *dentry, const char *xattr_name,
		       const void *xattr_value, size_t xattr_value_len)
{
	const struct evm_ima_xattr_data *xattr_data = xattr_value;

	if (strcmp(xattr_name, XATTR_NAME_EVM) == 0) {
		if (!xattr_value_len)
			return -EINVAL;
		if (xattr_data->type != EVM_IMA_XATTR_DIGSIG)
			return -EPERM;
	}
	return evm_protect_xattr(dentry, xattr_name, xattr_value,
				 xattr_value_len);
}

Historically, this outdated classification described vulnerabilities from improper handling of data inputs, leading to unexpected program behavior or errors when input validation fails.