Unity Linux 20.1070e Security Update: kernel (UTSA-2026-005495)

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

include('compat.inc');

if (description)
{
  script_id(300759);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/03/04");

  script_cve_id("CVE-2024-50040");

  script_name(english:"Unity Linux 20.1070e Security Update: kernel (UTSA-2026-005495)");

  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-2026-005495 advisory.

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

    igb: Do not bring the device up after non-fatal error

    Commit 004d25060c78 (igb: Fix igb_down hung on surprise removal)
    changed igb_io_error_detected() to ignore non-fatal pcie errors in order
    to avoid hung task that can happen when igb_down() is called multiple
    times. This caused an issue when processing transient non-fatal errors.
    igb_io_resume(), which is called after igb_io_error_detected(), assumes
    that device is brought down by igb_io_error_detected() if the interface
    is up. This resulted in panic with stacktrace below.

    [ T3256] igb 0000:09:00.0 haeth0: igb: haeth0 NIC Link is Down
    [  T292] pcieport 0000:00:1c.5: AER: Uncorrected (Non-Fatal) error received: 0000:09:00.0
    [  T292] igb 0000:09:00.0: PCIe Bus Error: severity=Uncorrected (Non-Fatal), type=Transaction Layer,
    (Requester ID)
    [  T292] igb 0000:09:00.0:   device [8086:1537] error status/mask=00004000/00000000
    [  T292] igb 0000:09:00.0:    [14] CmpltTO [  200.105524,009][  T292] igb 0000:09:00.0: AER:   TLP Header:
    00000000 00000000 00000000 00000000
    [  T292] pcieport 0000:00:1c.5: AER: broadcast error_detected message
    [  T292] igb 0000:09:00.0: Non-correctable non-fatal error reported.
    [  T292] pcieport 0000:00:1c.5: AER: broadcast mmio_enabled message
    [  T292] pcieport 0000:00:1c.5: AER: broadcast resume message
    [  T292] ------------[ cut here ]------------
    [  T292] kernel BUG at net/core/dev.c:6539!
    [  T292] invalid opcode: 0000 [#1] PREEMPT SMP
    [  T292] RIP: 0010:napi_enable+0x37/0x40
    [  T292] Call Trace:
    [  T292]  <TASK>
    [  T292]  ? die+0x33/0x90
    [  T292]  ? do_trap+0xdc/0x110
    [  T292]  ? napi_enable+0x37/0x40
    [  T292]  ? do_error_trap+0x70/0xb0
    [  T292]  ? napi_enable+0x37/0x40
    [  T292]  ? napi_enable+0x37/0x40
    [  T292]  ? exc_invalid_op+0x4e/0x70
    [  T292]  ? napi_enable+0x37/0x40
    [  T292]  ? asm_exc_invalid_op+0x16/0x20
    [  T292]  ? napi_enable+0x37/0x40
    [  T292]  igb_up+0x41/0x150
    [  T292]  igb_io_resume+0x25/0x70
    [  T292]  report_resume+0x54/0x70
    [  T292]  ? report_frozen_detected+0x20/0x20
    [  T292]  pci_walk_bus+0x6c/0x90
    [  T292]  ? aer_print_port_info+0xa0/0xa0
    [  T292]  pcie_do_recovery+0x22f/0x380
    [  T292]  aer_process_err_devices+0x110/0x160
    [  T292]  aer_isr+0x1c1/0x1e0
    [  T292]  ? disable_irq_nosync+0x10/0x10
    [  T292]  irq_thread_fn+0x1a/0x60
    [  T292]  irq_thread+0xe3/0x1a0
    [  T292]  ? irq_set_affinity_notifier+0x120/0x120
    [  T292]  ? irq_affinity_notify+0x100/0x100
    [  T292]  kthread+0xe2/0x110
    [  T292]  ? kthread_complete_and_exit+0x20/0x20
    [  T292]  ret_from_fork+0x2d/0x50
    [  T292]  ? kthread_complete_and_exit+0x20/0x20
    [  T292]  ret_from_fork_asm+0x11/0x20
    [  T292]  </TASK>

    To fix this issue igb_io_resume() checks if the interface is running and
    the device is not down this means igb_io_error_detected() did not bring
    the device down and there is no need to bring it up.

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-2026-005495
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5084d08e");
  # https://lore.kernel.org/linux-cve-announce/2024102132-CVE-2024-50040-f156@gregkh
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?eb404347");
  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2024-50040");
  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-2024-50040");

  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:"2023/12/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/03/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/03/04");

  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:"^20.1070e([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'UOS Server 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': '1070e',
    'pkgs': [
      {'reference':'kernel-4.19.90-2601.1.0.0002', 'sp':'1070e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2601.1.0.0002', 'sp':'1070e', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2601.1.0.0002', 'sp':'1070e', 'cpu':'sw_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2601.1.0.0002', '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');
}