SYSCALL_DEFINE2(sethostname, char __user *, name, int, len)
{
 int errno;
 char tmp[__NEW_UTS_LEN];

 if (!ns_capable(current->nsproxy->uts_ns->user_ns, CAP_SYS_ADMIN))
 return -EPERM;

 if (len < 0 || len > __NEW_UTS_LEN)
 return -EINVAL;
	down_write(&uts_sem);
	errno = -EFAULT;
 if (!copy_from_user(tmp, name, len)) {
 struct new_utsname *u = utsname();

		memcpy(u->nodename, tmp, len);
		memset(u->nodename + len, 0, sizeof(u->nodename) - len);
		errno = 0;
 }
	uts_proc_notify(UTS_PROC_HOSTNAME);
	up_write(&uts_sem);
 return errno;
}

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