Unity Linux 20.1070e Security Update: kernel (UTSA-2025-987386)

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

include('compat.inc');

if (description)
{
  script_id(268326);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/10/15");

  script_cve_id("CVE-2022-48675");

  script_name(english:"Unity Linux 20.1070e Security Update: kernel (UTSA-2025-987386)");

  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-2025-987386 advisory.

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

    IB/core: Fix a nested dead lock as part of ODP flow

    Fix a nested dead lock as part of ODP flow by using mmput_async().

    From the below call trace [1] can see that calling mmput() once we have
    the umem_odp->umem_mutex locked as required by
    ib_umem_odp_map_dma_and_lock() might trigger in the same task the
    exit_mmap()->__mmu_notifier_release()->mlx5_ib_invalidate_range() which
    may dead lock when trying to lock the same mutex.

    Moving to use mmput_async() will solve the problem as the above
    exit_mmap() flow will be called in other task and will be executed once
    the lock will be available.

    [1]
    [64843.077665] task:kworker/u133:2  state:D stack:    0 pid:80906 ppid:
    2 flags:0x00004000
    [64843.077672] Workqueue: mlx5_ib_page_fault mlx5_ib_eqe_pf_action [mlx5_ib]
    [64843.077719] Call Trace:
    [64843.077722]  <TASK>
    [64843.077724]  __schedule+0x23d/0x590
    [64843.077729]  schedule+0x4e/0xb0
    [64843.077735]  schedule_preempt_disabled+0xe/0x10
    [64843.077740]  __mutex_lock.constprop.0+0x263/0x490
    [64843.077747]  __mutex_lock_slowpath+0x13/0x20
    [64843.077752]  mutex_lock+0x34/0x40
    [64843.077758]  mlx5_ib_invalidate_range+0x48/0x270 [mlx5_ib]
    [64843.077808]  __mmu_notifier_release+0x1a4/0x200
    [64843.077816]  exit_mmap+0x1bc/0x200
    [64843.077822]  ? walk_page_range+0x9c/0x120
    [64843.077828]  ? __cond_resched+0x1a/0x50
    [64843.077833]  ? mutex_lock+0x13/0x40
    [64843.077839]  ? uprobe_clear_state+0xac/0x120
    [64843.077860]  mmput+0x5f/0x140
    [64843.077867]  ib_umem_odp_map_dma_and_lock+0x21b/0x580 [ib_core]
    [64843.077931]  pagefault_real_mr+0x9a/0x140 [mlx5_ib]
    [64843.077962]  pagefault_mr+0xb4/0x550 [mlx5_ib]
    [64843.077992]  pagefault_single_data_segment.constprop.0+0x2ac/0x560
    [mlx5_ib]
    [64843.078022]  mlx5_ib_eqe_pf_action+0x528/0x780 [mlx5_ib]
    [64843.078051]  process_one_work+0x22b/0x3d0
    [64843.078059]  worker_thread+0x53/0x410
    [64843.078065]  ? process_one_work+0x3d0/0x3d0
    [64843.078073]  kthread+0x12a/0x150
    [64843.078079]  ? set_kthread_struct+0x50/0x50
    [64843.078085]  ret_from_fork+0x22/0x30
    [64843.078093]  </TASK>

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-2025-987386
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?7c0c16ca");
  # https://lore.kernel.org/linux-cve-announce/2024050319-CVE-2022-48675-6ff4@gregkh
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?dee328c7");
  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2022-48675");
  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-2022-48675");

  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:"2021/07/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/09/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/10/07");

  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:"^20.1070e([^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 && 'x86_64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'UOS Server', cpu);


var constraints = [
  {
    'release': '20',
    'sp': '1070e',
    'pkgs': [
      {'reference':'kernel-5.10.0-74.16', 'sp':'1070e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-74.16', 'sp':'1070e', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-74.16', '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');
}