Unity Linux 20.1070a Security Update: kernel (UTSA-2025-990361)

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

include('compat.inc');

if (description)
{
  script_id(272318);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/11/05");

  script_cve_id("CVE-2024-43098");

  script_name(english:"Unity Linux 20.1070a Security Update: kernel (UTSA-2025-990361)");

  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-2025-990361 advisory.

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

    i3c: Use i3cdev->desc->info instead of calling i3c_device_get_info() to avoid deadlock

    A deadlock may happen since the i3c_master_register() acquires
    &i3cbus->lock twice. See the log below.
    Use i3cdev->desc->info instead of calling i3c_device_info() to
    avoid acquiring the lock twice.

    v2:
      - Modified the title and commit message

    ============================================
    WARNING: possible recursive locking detected
    6.11.0-mainline
    --------------------------------------------
    init/1 is trying to acquire lock:
    f1ffff80a6a40dc0 (&i3cbus->lock){++++}-{3:3}, at: i3c_bus_normaluse_lock

    but task is already holding lock:
    f1ffff80a6a40dc0 (&i3cbus->lock){++++}-{3:3}, at: i3c_master_register

    other info that might help us debug this:
     Possible unsafe locking scenario:

           CPU0
           ----
      lock(&i3cbus->lock);
      lock(&i3cbus->lock);

     *** DEADLOCK ***

     May be due to missing lock nesting notation

    2 locks held by init/1:
     #0: fcffff809b6798f8 (&dev->mutex){....}-{3:3}, at: __driver_attach
     #1: f1ffff80a6a40dc0 (&i3cbus->lock){++++}-{3:3}, at: i3c_master_register

    stack backtrace:
    CPU: 6 UID: 0 PID: 1 Comm: init
    Call trace:
     dump_backtrace+0xfc/0x17c
     show_stack+0x18/0x28
     dump_stack_lvl+0x40/0xc0
     dump_stack+0x18/0x24
     print_deadlock_bug+0x388/0x390
     __lock_acquire+0x18bc/0x32ec
     lock_acquire+0x134/0x2b0
     down_read+0x50/0x19c
     i3c_bus_normaluse_lock+0x14/0x24
     i3c_device_get_info+0x24/0x58
     i3c_device_uevent+0x34/0xa4
     dev_uevent+0x310/0x384
     kobject_uevent_env+0x244/0x414
     kobject_uevent+0x14/0x20
     device_add+0x278/0x460
     device_register+0x20/0x34
     i3c_master_register_new_i3c_devs+0x78/0x154
     i3c_master_register+0x6a0/0x6d4
     mtk_i3c_master_probe+0x3b8/0x4d8
     platform_probe+0xa0/0xe0
     really_probe+0x114/0x454
     __driver_probe_device+0xa0/0x15c
     driver_probe_device+0x3c/0x1ac
     __driver_attach+0xc4/0x1f0
     bus_for_each_dev+0x104/0x160
     driver_attach+0x24/0x34
     bus_add_driver+0x14c/0x294
     driver_register+0x68/0x104
     __platform_driver_register+0x20/0x30
     init_module+0x20/0xfe4
     do_one_initcall+0x184/0x464
     do_init_module+0x58/0x1ec
     load_module+0xefc/0x10c8
     __arm64_sys_finit_module+0x238/0x33c
     invoke_syscall+0x58/0x10c
     el0_svc_common+0xa8/0xdc
     do_el0_svc+0x1c/0x28
     el0_svc+0x50/0xac
     el0t_64_sync_handler+0x70/0xbc
     el0t_64_sync+0x1a8/0x1ac

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-2025-990361
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?24866db8");
  # https://lore.kernel.org/linux-cve-announce/2025011118-CVE-2024-43098-e732@gregkh
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3d942da6");
  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2024-43098");
  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-2024-43098");

  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:"2025/01/11");
  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');
}