Unity Linux 20.1070a Security Update: kernel (UTSA-2025-990574)

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

include('compat.inc');

if (description)
{
  script_id(274152);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/11/06");

  script_cve_id("CVE-2022-49175");

  script_name(english:"Unity Linux 20.1070a Security Update: kernel (UTSA-2025-990574)");

  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-2025-990574 advisory.

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

    PM: core: keep irq flags in device_pm_check_callbacks()

    The function device_pm_check_callbacks() can be called under the spin
    lock (in the reported case it happens from genpd_add_device() ->
    dev_pm_domain_set(), when the genpd uses spinlocks rather than mutexes.

    However this function uncoditionally uses spin_lock_irq() /
    spin_unlock_irq(), thus not preserving the CPU flags. Use the
    irqsave/irqrestore instead.

    The backtrace for the reference:
    [    2.752010] ------------[ cut here ]------------
    [    2.756769] raw_local_irq_restore() called with IRQs enabled
    [    2.762596] WARNING: CPU: 4 PID: 1 at kernel/locking/irqflag-debug.c:10
    warn_bogus_irq_restore+0x34/0x50
    [    2.772338] Modules linked in:
    [    2.775487] CPU: 4 PID: 1 Comm: swapper/0 Tainted: G S                5.17.0-rc6-00384-ge330d0d82eff-
    dirty #684
    [    2.781384] Freeing initrd memory: 46024K
    [    2.785839] pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
    [    2.785841] pc : warn_bogus_irq_restore+0x34/0x50
    [    2.785844] lr : warn_bogus_irq_restore+0x34/0x50
    [    2.785846] sp : ffff80000805b7d0
    [    2.785847] x29: ffff80000805b7d0 x28: 0000000000000000 x27: 0000000000000002
    [    2.785850] x26: ffffd40e80930b18 x25: ffff7ee2329192b8 x24: ffff7edfc9f60800
    [    2.785853] x23: ffffd40e80930b18 x22: ffffd40e80930d30 x21: ffff7edfc0dffa00
    [    2.785856] x20: ffff7edfc09e3768 x19: 0000000000000000 x18: ffffffffffffffff
    [    2.845775] x17: 6572206f74206465 x16: 6c696166203a3030 x15: ffff80008805b4f7
    [    2.853108] x14: 0000000000000000 x13: ffffd40e809550b0 x12: 00000000000003d8
    [    2.860441] x11: 0000000000000148 x10: ffffd40e809550b0 x9 : ffffd40e809550b0
    [    2.867774] x8 : 00000000ffffefff x7 : ffffd40e809ad0b0 x6 : ffffd40e809ad0b0
    [    2.875107] x5 : 000000000000bff4 x4 : 0000000000000000 x3 : 0000000000000000
    [    2.882440] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff7edfc03a8000
    [    2.889774] Call trace:
    [    2.892290]  warn_bogus_irq_restore+0x34/0x50
    [    2.896770]  _raw_spin_unlock_irqrestore+0x94/0xa0
    [    2.901690]  genpd_unlock_spin+0x20/0x30
    [    2.905724]  genpd_add_device+0x100/0x2d0
    [    2.909850]  __genpd_dev_pm_attach+0xa8/0x23c
    [    2.914329]  genpd_dev_pm_attach_by_id+0xc4/0x190
    [    2.919167]  genpd_dev_pm_attach_by_name+0x3c/0xd0
    [    2.924086]  dev_pm_domain_attach_by_name+0x24/0x30
    [    2.929102]  psci_dt_attach_cpu+0x24/0x90
    [    2.933230]  psci_cpuidle_probe+0x2d4/0x46c
    [    2.937534]  platform_probe+0x68/0xe0
    [    2.941304]  really_probe.part.0+0x9c/0x2fc
    [    2.945605]  __driver_probe_device+0x98/0x144
    [    2.950085]  driver_probe_device+0x44/0x15c
    [    2.954385]  __device_attach_driver+0xb8/0x120
    [    2.958950]  bus_for_each_drv+0x78/0xd0
    [    2.962896]  __device_attach+0xd8/0x180
    [    2.966843]  device_initial_probe+0x14/0x20
    [    2.971144]  bus_probe_device+0x9c/0xa4
    [    2.975092]  device_add+0x380/0x88c
    [    2.978679]  platform_device_add+0x114/0x234
    [    2.983067]  platform_device_register_full+0x100/0x190
    [    2.988344]  psci_idle_init+0x6c/0xb0
    [    2.992113]  do_one_initcall+0x74/0x3a0
    [    2.996060]  kernel_init_freeable+0x2fc/0x384
    [    3.000543]  kernel_init+0x28/0x130
    [    3.004132]  ret_from_fork+0x10/0x20
    [    3.007817] irq event stamp: 319826
    [    3.011404] hardirqs last  enabled at (319825): [<ffffd40e7eda0268>] __up_console_sem+0x78/0x84
    [    3.020332] hardirqs last disabled at (319826): [<ffffd40e7fd6d9d8>] el1_dbg+0x24/0x8c
    [    3.028458] softirqs last  enabled at (318312): [<ffffd40e7ec90410>] _stext+0x410/0x588
    [    3.036678] softirqs last disabled at (318299): [<ffffd40e7ed1bf68>] __irq_exit_rcu+0x158/0x174
    [    3.045607] ---[ end trace 0000000000000000 ]---

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-2025-990574
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d62bdab4");
  # https://lore.kernel.org/linux-cve-announce/2025022613-CVE-2022-49175-1b88@gregkh
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?1e074940");
  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2022-49175");
  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-2022-49175");

  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:"2022/11/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/11/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/11/06");

  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) 2025 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:"^20.1070a([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'UOS Server 20.1070a', '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 && 'loongarch64' >!< cpu && 'x86_64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'UOS Server', cpu);


var constraints = [
  {
    'release': '20',
    'sp': '1070a',
    'pkgs': [
      {'reference':'kernel-4.19.0-91.82.190.003', 'sp':'1070a', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.0-91.82.190.003', 'sp':'1070a', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.0-91.82.190.003', 'sp':'1070a', 'cpu':'loongarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.0-91.82.190.003', 'sp':'1070a', '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');
}