Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-007462)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(307243);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/04/21");

  script_cve_id("CVE-2021-47139");

  script_name(english:"Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-007462)");

  script_set_attribute(attribute:"synopsis", value:
"The Unity Linux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the
UTSA-2026-007462 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    net: hns3: put off calling register_netdev() until client initialize complete

    Currently, the netdevice is registered before client initializing
    complete. So there is a timewindow between netdevice available
    and usable. In this case, if user try to change the channel number
    or ring param, it may cause the hns3_set_rx_cpu_rmap() being called
    twice, and report bug.

    [47199.416502] hns3 0000:35:00.0 eth1: set channels: tqp_num=1, rxfh=0
    [47199.430340] hns3 0000:35:00.0 eth1: already uninitialized
    [47199.438554] hns3 0000:35:00.0: rss changes from 4 to 1
    [47199.511854] hns3 0000:35:00.0: Channels changed, rss_size from 4 to 1, tqps from 4 to 1
    [47200.163524] ------------[ cut here ]------------
    [47200.171674] kernel BUG at lib/cpu_rmap.c:142!
    [47200.177847] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
    [47200.185259] Modules linked in: hclge(+) hns3(-) hns3_cae(O) hns_roce_hw_v2 hnae3 vfio_iommu_type1
    vfio_pci vfio_virqfd vfio pv680_mii(O) [last unloaded: hclge]
    [47200.205912] CPU: 1 PID: 8260 Comm: ethtool Tainted: G           O      5.11.0-rc3+ #1
    [47200.215601] Hardware name:  , xxxxxx 02/04/2021
    [47200.223052] pstate: 60400009 (nZCv daif +PAN -UAO -TCO BTYPE=--)
    [47200.230188] pc : cpu_rmap_add+0x38/0x40
    [47200.237472] lr : irq_cpu_rmap_add+0x84/0x140
    [47200.243291] sp : ffff800010e93a30
    [47200.247295] x29: ffff800010e93a30 x28: ffff082100584880
    [47200.254155] x27: 0000000000000000 x26: 0000000000000000
    [47200.260712] x25: 0000000000000000 x24: 0000000000000004
    [47200.267241] x23: ffff08209ba03000 x22: ffff08209ba038c0
    [47200.273789] x21: 000000000000003f x20: ffff0820e2bc1680
    [47200.280400] x19: ffff0820c970ec80 x18: 00000000000000c0
    [47200.286944] x17: 0000000000000000 x16: ffffb43debe4a0d0
    [47200.293456] x15: fffffc2082990600 x14: dead000000000122
    [47200.300059] x13: ffffffffffffffff x12: 000000000000003e
    [47200.306606] x11: ffff0820815b8080 x10: ffff53e411988000
    [47200.313171] x9 : 0000000000000000 x8 : ffff0820e2bc1700
    [47200.319682] x7 : 0000000000000000 x6 : 000000000000003f
    [47200.326170] x5 : 0000000000000040 x4 : ffff800010e93a20
    [47200.332656] x3 : 0000000000000004 x2 : ffff0820c970ec80
    [47200.339168] x1 : ffff0820e2bc1680 x0 : 0000000000000004
    [47200.346058] Call trace:
    [47200.349324]  cpu_rmap_add+0x38/0x40
    [47200.354300]  hns3_set_rx_cpu_rmap+0x6c/0xe0 [hns3]
    [47200.362294]  hns3_reset_notify_init_enet+0x1cc/0x340 [hns3]
    [47200.370049]  hns3_change_channels+0x40/0xb0 [hns3]
    [47200.376770]  hns3_set_channels+0x12c/0x2a0 [hns3]
    [47200.383353]  ethtool_set_channels+0x140/0x250
    [47200.389772]  dev_ethtool+0x714/0x23d0
    [47200.394440]  dev_ioctl+0x4cc/0x640
    [47200.399277]  sock_do_ioctl+0x100/0x2a0
    [47200.404574]  sock_ioctl+0x28c/0x470
    [47200.409079]  __arm64_sys_ioctl+0xb4/0x100
    [47200.415217]  el0_svc_common.constprop.0+0x84/0x210
    [47200.422088]  do_el0_svc+0x28/0x34
    [47200.426387]  el0_svc+0x28/0x70
    [47200.431308]  el0_sync_handler+0x1a4/0x1b0
    [47200.436477]  el0_sync+0x174/0x180
    [47200.441562] Code: 11000405 79000c45 f8247861 d65f03c0 (d4210000)
    [47200.448869] ---[ end trace a01efe4ce42e5f34 ]---

    The process is like below:
    excuting hns3_client_init
    |
    register_netdev()
    |                           hns3_set_channels()
    |                           |
    hns3_set_rx_cpu_rmap()      hns3_reset_notify_uninit_enet()
    |                               |
    |                            quit without calling function
    |                            hns3_free_rx_cpu_rmap for flag
    |                            HNS3_NIC_STATE_INITED is unset.
    |                           |
    |                           hns3_reset_notify_init_enet()
    |                               |
    set HNS3_NIC_STATE_INITED    call hns3_set_rx_cpu_rmap()-- crash

    Fix it by calling register_netdev() at the end of function
    hns3_client_init().

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://src.uniontech.com/#/security_advisory_detail?utsa_id=UTSA-2026-007462
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?792c0774");
  # https://lore.kernel.org/linux-cve-announce/2024032557-CVE-2021-47139-994d@gregkh
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?bc35ae31");
  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2021-47139");
  script_set_attribute(attribute:"solution", value:
"Update the affected kernel package.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-47139");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2024/03/25");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/04/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/04/17");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Unity Linux Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info2.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/UOS-Server/release", "Host/UOS-Server/rpm-list", "Host/cpu");

  exit(0);
}
include('rpm2.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_product = get_kb_item('installed_os/local/SSH/0/product');
if (isnull(os_product) || 'UOS Server' >!< os_product) audit(AUDIT_OS_NOT, 'UOS Server');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'UOS Server');
if (! preg(pattern:"^20.1050e|20.1060e|20.1070e([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'UOS Server 20.1050e / 20.1060e / 20.1070e', 'UOS Server ' + os_version);

if (!get_kb_item('Host/UOS-Server/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('aarch64' >!< cpu && 'amd64' >!< cpu && 'sw_64' >!< cpu && 'x86_64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'UOS Server', cpu);


var constraints = [
  {
    'release': '20',
    'sp': '1050e',
    'pkgs': [
      {'reference':'kernel-4.19.90-2106.1.0', 'sp':'1050e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2106.1.0', 'sp':'1050e', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2106.1.0', 'sp':'1050e', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE}
    ]
  },
  {
    'release': '20',
    'sp': '1060e',
    'pkgs': [
      {'reference':'kernel-4.19.90-2106.1.0', 'sp':'1060e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2106.1.0', 'sp':'1060e', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2106.1.0', 'sp':'1060e', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE}
    ]
  },
  {
    'release': '20',
    'sp': '1070e',
    'pkgs': [
      {'reference':'kernel-4.19.90-2106.1.0', 'sp':'1070e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2106.1.0', 'sp':'1070e', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2106.1.0', 'sp':'1070e', 'cpu':'sw_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2106.1.0', 'sp':'1070e', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE}
    ]
  }
];

var os_release = get_one_kb_item('installed_os/local/SSH/0/release');
var os_sp = get_one_kb_item('Host/*/minor_release');

var flag = 0;
var reference;
var sp;
var _cpu;
var el_string;
var rpm_spec_vers_cmp;
var epoch;
var allowmaj;
var exists_check;
var cves;
foreach var constraint ( constraints ) {
  # Check that the target release is equal to the affected release
  if (!empty_or_null(constraint['release'])){
    if (constraint['release'] != os_release) continue;
  }
  if (!empty_or_null(constraint['sp'])){
    if (constraint['sp'] != os_sp) continue;
  }
  foreach var pkg ( constraint['pkgs'] ) {
    reference = NULL;
    sp = NULL;
    _cpu = NULL;
    el_string = NULL;
    rpm_spec_vers_cmp = NULL;
    epoch = NULL;
    allowmaj = NULL;
    exists_check = NULL;
    cves = NULL;
    if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];
    if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
    if (!empty_or_null(pkg['cpu'])) _cpu = pkg['cpu'];
    if (!empty_or_null(pkg['el_string'])) el_string = pkg['el_string'];
    if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
    if (!empty_or_null(pkg['epoch'])) epoch = pkg['epoch'];
    if (!empty_or_null(pkg['allowmaj'])) allowmaj = pkg['allowmaj'];
    if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
    if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
    if (reference &&
        ## (no known rpm to check OR known rpm_exists)
        (!exists_check || rpm_exists(rpm:exists_check)) &&
        rpm_check(sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj, cves:cves)) flag++;
  }
}


if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'kernel');
}