Unity Linux 20.1070a Security Update: kernel (UTSA-2025-989937)

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

include('compat.inc');

if (description)
{
  script_id(273269);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/11/05");

  script_cve_id("CVE-2022-48978");

  script_name(english:"Unity Linux 20.1070a Security Update: kernel (UTSA-2025-989937)");

  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-2025-989937 advisory.

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

    HID: core: fix shift-out-of-bounds in hid_report_raw_event

    Syzbot reported shift-out-of-bounds in hid_report_raw_event.

    microsoft 0003:045E:07DA.0001: hid_field_extract() called with n (128) >
    32! (swapper/0)
    ======================================================================
    UBSAN: shift-out-of-bounds in drivers/hid/hid-core.c:1323:20
    shift exponent 127 is too large for 32-bit type 'int'
    CPU: 0 PID: 0 Comm: swapper/0 Not tainted
    6.1.0-rc4-syzkaller-00159-g4bbf3422df78 #0
    Hardware name: Google Compute Engine/Google Compute Engine, BIOS
    Google 10/26/2022
    Call Trace:
     <IRQ>
     __dump_stack lib/dump_stack.c:88 [inline]
     dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
     ubsan_epilogue lib/ubsan.c:151 [inline]
     __ubsan_handle_shift_out_of_bounds+0x3a6/0x420 lib/ubsan.c:322
     snto32 drivers/hid/hid-core.c:1323 [inline]
     hid_input_fetch_field drivers/hid/hid-core.c:1572 [inline]
     hid_process_report drivers/hid/hid-core.c:1665 [inline]
     hid_report_raw_event+0xd56/0x18b0 drivers/hid/hid-core.c:1998
     hid_input_report+0x408/0x4f0 drivers/hid/hid-core.c:2066
     hid_irq_in+0x459/0x690 drivers/hid/usbhid/hid-core.c:284
     __usb_hcd_giveback_urb+0x369/0x530 drivers/usb/core/hcd.c:1671
     dummy_timer+0x86b/0x3110 drivers/usb/gadget/udc/dummy_hcd.c:1988
     call_timer_fn+0xf5/0x210 kernel/time/timer.c:1474
     expire_timers kernel/time/timer.c:1519 [inline]
     __run_timers+0x76a/0x980 kernel/time/timer.c:1790
     run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1803
     __do_softirq+0x277/0x75b kernel/softirq.c:571
     __irq_exit_rcu+0xec/0x170 kernel/softirq.c:650
     irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
     sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1107
    ======================================================================

    If the size of the integer (unsigned n) is bigger than 32 in snto32(),
    shift exponent will be too large for 32-bit type 'int', resulting in a
    shift-out-of-bounds bug.
    Fix this by adding a check on the size of the integer (unsigned n) in
    snto32(). To add support for n greater than 32 bits, set n to 32, if n
    is greater than 32.

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-2025-989937
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?779c4928");
  # https://lore.kernel.org/linux-cve-announce/2024102146-CVE-2022-48978-8a19@gregkh
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?a7aaac26");
  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2022-48978");
  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-2022-48978");

  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:"2023/02/07");
  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:"^20.1070a([^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-5.10.0-79.4.2', 'sp':'1070a', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-79.4.2', 'sp':'1070a', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-79.4.2', 'sp':'1070a', 'cpu':'loongarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-79.4.2', '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');
}