int uv__make_socketpair(int fds[2], int flags) {
#if defined(__linux__)
  static int no_cloexec;

  if (no_cloexec)
    goto skip;

  if (socketpair(AF_UNIX, SOCK_STREAM | UV__SOCK_CLOEXEC | flags, 0, fds) == 0)
    return 0;

  /* Retry on EINVAL, it means SOCK_CLOEXEC is not supported.
   * Anything else is a genuine error.
   */
  if (errno != EINVAL)
    return -errno;

  no_cloexec = 1;

skip:
#endif

  if (socketpair(AF_UNIX, SOCK_STREAM, 0, fds))
    return -errno;

  uv__cloexec(fds[0], 1);
  uv__cloexec(fds[1], 1);

  if (flags & UV__F_NONBLOCK) {
    uv__nonblock(fds[0], 1);
    uv__nonblock(fds[1], 1);
  }

  return 0;
}

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