Unity Linux 20.1070e Security Update: kernel (UTSA-2025-989735)

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

include('compat.inc');

if (description)
{
  script_id(273842);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/11/05");

  script_cve_id("CVE-2022-49217");

  script_name(english:"Unity Linux 20.1070e Security Update: kernel (UTSA-2025-989735)");

  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-2025-989735 advisory.

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

    scsi: pm8001: Fix abort all task initialization

    In pm80xx_send_abort_all(), the n_elem field of the ccb used is not
    initialized to 0. This missing initialization sometimes lead to the task
    completion path seeing the ccb with a non-zero n_elem resulting in the
    execution of invalid dma_unmap_sg() calls in pm8001_ccb_task_free(),
    causing a crash such as:

    [  197.676341] RIP: 0010:iommu_dma_unmap_sg+0x6d/0x280
    [  197.700204] RSP: 0018:ffff889bbcf89c88 EFLAGS: 00010012
    [  197.705485] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff83d0bda0
    [  197.712687] RDX: 0000000000000002 RSI: 0000000000000000 RDI: ffff88810dffc0d0
    [  197.719887] RBP: 0000000000000000 R08: 0000000000000000 R09: ffff8881c790098b
    [  197.727089] R10: ffffed1038f20131 R11: 0000000000000001 R12: 0000000000000000
    [  197.734296] R13: ffff88810dffc0d0 R14: 0000000000000010 R15: 0000000000000000
    [  197.741493] FS:  0000000000000000(0000) GS:ffff889bbcf80000(0000) knlGS:0000000000000000
    [  197.749659] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
    [  197.755459] CR2: 00007f16c1b42734 CR3: 0000000004814000 CR4: 0000000000350ee0
    [  197.762656] Call Trace:
    [  197.765127]  <IRQ>
    [  197.767162]  pm8001_ccb_task_free+0x5f1/0x820 [pm80xx]
    [  197.772364]  ? do_raw_spin_unlock+0x54/0x220
    [  197.776680]  pm8001_mpi_task_abort_resp+0x2ce/0x4f0 [pm80xx]
    [  197.782406]  process_oq+0xe85/0x7890 [pm80xx]
    [  197.786817]  ? lock_acquire+0x194/0x490
    [  197.790697]  ? handle_irq_event+0x10e/0x1b0
    [  197.794920]  ? mpi_sata_completion+0x2d70/0x2d70 [pm80xx]
    [  197.800378]  ? __wake_up_bit+0x100/0x100
    [  197.804340]  ? lock_is_held_type+0x98/0x110
    [  197.808565]  pm80xx_chip_isr+0x94/0x130 [pm80xx]
    [  197.813243]  tasklet_action_common.constprop.0+0x24b/0x2f0
    [  197.818785]  __do_softirq+0x1b5/0x82d
    [  197.822485]  ? do_raw_spin_unlock+0x54/0x220
    [  197.826799]  __irq_exit_rcu+0x17e/0x1e0
    [  197.830678]  irq_exit_rcu+0xa/0x20
    [  197.834114]  common_interrupt+0x78/0x90
    [  197.840051]  </IRQ>
    [  197.844236]  <TASK>
    [  197.848397]  asm_common_interrupt+0x1e/0x40

    Avoid this issue by always initializing the ccb n_elem field to 0 in
    pm8001_send_abort_all(), pm8001_send_read_log() and
    pm80xx_send_abort_all().

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-2025-989735
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?51837127");
  # https://lore.kernel.org/linux-cve-announce/2025022620-CVE-2022-49217-1e82@gregkh
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5cfce4cd");
  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2022-49217");
  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-2022-49217");

  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:"2025/02/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/11/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/11/05");

  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-5.10.0-79.4.2', 'sp':'1070e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-79.4.2', 'sp':'1070e', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-79.4.2', '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');
}