Unity Linux 20.1070e Security Update: kernel (UTSA-2025-987157)

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

include('compat.inc');

if (description)
{
  script_id(268486);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/10/15");

  script_cve_id("CVE-2021-47268");

  script_name(english:"Unity Linux 20.1070e Security Update: kernel (UTSA-2025-987157)");

  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-2025-987157 advisory.

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

    usb: typec: tcpm: cancel vdm and state machine hrtimer when unregister tcpm port

    A pending hrtimer may expire after the kthread_worker of tcpm port
    is destroyed, see below kernel dump when do module unload, fix it
    by cancel the 2 hrtimers.

    [  111.517018] Unable to handle kernel paging request at virtual address ffff8000118cb880
    [  111.518786] blk_update_request: I/O error, dev sda, sector 60061185 op 0x0:(READ) flags 0x0 phys_seg 1
    prio class 0
    [  111.526594] Mem abort info:
    [  111.526597]   ESR = 0x96000047
    [  111.526600]   EC = 0x25: DABT (current EL), IL = 32 bits
    [  111.526604]   SET = 0, FnV = 0
    [  111.526607]   EA = 0, S1PTW = 0
    [  111.526610] Data abort info:
    [  111.526612]   ISV = 0, ISS = 0x00000047
    [  111.526615]   CM = 0, WnR = 1
    [  111.526619] swapper pgtable: 4k pages, 48-bit VAs, pgdp=0000000041d75000
    [  111.526623] [ffff8000118cb880] pgd=10000001bffff003, p4d=10000001bffff003, pud=10000001bfffe003,
    pmd=10000001bfffa003, pte=0000000000000000
    [  111.526642] Internal error: Oops: 96000047 [#1] PREEMPT SMP
    [  111.526647] Modules linked in: dwc3_imx8mp dwc3 phy_fsl_imx8mq_usb [last unloaded: tcpci]
    [  111.526663] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.13.0-rc4-00927-gebbe9dbd802c-dirty #36
    [  111.526670] Hardware name: NXP i.MX8MPlus EVK board (DT)
    [  111.526674] pstate: 800000c5 (Nzcv daIF -PAN -UAO -TCO BTYPE=--)
    [  111.526681] pc : queued_spin_lock_slowpath+0x1a0/0x390
    [  111.526695] lr : _raw_spin_lock_irqsave+0x88/0xb4
    [  111.526703] sp : ffff800010003e20
    [  111.526706] x29: ffff800010003e20 x28: ffff00017f380180
    [  111.537156] buffer_io_error: 6 callbacks suppressed
    [  111.537162] Buffer I/O error on dev sda1, logical block 60040704, async page read
    [  111.539932]  x27: ffff00017f3801c0
    [  111.539938] x26: ffff800010ba2490 x25: 0000000000000000 x24: 0000000000000001
    [  111.543025] blk_update_request: I/O error, dev sda, sector 60061186 op 0x0:(READ) flags 0x0 phys_seg 7
    prio class 0
    [  111.548304]
    [  111.548306] x23: 00000000000000c0 x22: ffff0000c2a9f184 x21: ffff00017f380180
    [  111.551374] Buffer I/O error on dev sda1, logical block 60040705, async page read
    [  111.554499]
    [  111.554503] x20: ffff0000c5f14210 x19: 00000000000000c0 x18: 0000000000000000
    [  111.557391] Buffer I/O error on dev sda1, logical block 60040706, async page read
    [  111.561218]
    [  111.561222] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000
    [  111.564205] Buffer I/O error on dev sda1, logical block 60040707, async page read
    [  111.570887] x14: 00000000000000f5 x13: 0000000000000001 x12: 0000000000000040
    [  111.570902] x11: ffff0000c05ac6d8
    [  111.583420] Buffer I/O error on dev sda1, logical block 60040708, async page read
    [  111.588978]  x10: 0000000000000000 x9 : 0000000000040000
    [  111.588988] x8 : 0000000000000000
    [  111.597173] Buffer I/O error on dev sda1, logical block 60040709, async page read
    [  111.605766]  x7 : ffff00017f384880 x6 : ffff8000118cb880
    [  111.605777] x5 : ffff00017f384880
    [  111.611094] Buffer I/O error on dev sda1, logical block 60040710, async page read
    [  111.617086]  x4 : 0000000000000000 x3 : ffff0000c2a9f184
    [  111.617096] x2 : ffff8000118cb880
    [  111.622242] Buffer I/O error on dev sda1, logical block 60040711, async page read
    [  111.626927]  x1 : ffff8000118cb880 x0 : ffff00017f384888
    [  111.626938] Call trace:
    [  111.626942]  queued_spin_lock_slowpath+0x1a0/0x390
    [  111.795809]  kthread_queue_work+0x30/0xc0
    [  111.799828]  state_machine_timer_handler+0x20/0x30
    [  111.804624]  __hrtimer_run_queues+0x140/0x1e0
    [  111.808990]  hrtimer_interrupt+0xec/0x2c0
    [  111.813004]  arch_timer_handler_phys+0x38/0x50
    [  111.817456]  handle_percpu_devid_irq+0x88/0x150
    [  111.821991]  __handle_domain_irq+0x80/0xe0
    [  111.826093]  gic_handle_irq+0xc0/0x140
    [  111.829848]  el1_irq+0xbc/0x154
    [  111.832991]  arch_cpu_idle+0x1c/0x2c
    [  111.836572]  default_idle_call+0x24/0x6c
    [  111.840497]  do_idle+0x238/0x2ac
    [  1
    ---truncated---

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-2025-987157
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?93d1a7ed");
  # https://lore.kernel.org/linux-cve-announce/2024052149-CVE-2021-47268-8a75@gregkh
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?669fc888");
  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2021-47268");
  script_set_attribute(attribute:"solution", value:
"Update the affected kernel package.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/C:C/I:C/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:H/I:H/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-2021-47268");

  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:"2024/05/21");
  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');
}