Unity Linux 20.1050e Security Update: kernel (UTSA-2025-989997)

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

include('compat.inc');

if (description)
{
  script_id(273845);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/11/05");

  script_cve_id("CVE-2024-53183");

  script_name(english:"Unity Linux 20.1050e Security Update: kernel (UTSA-2025-989997)");

  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-2025-989997 advisory.

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

    um: net: Do not use drvdata in release

    The drvdata is not available in release. Let's just use container_of()
    to get the uml_net instance. Otherwise, removing a network device will
    result in a crash:

    RIP: 0033:net_device_release+0x10/0x6f
    RSP: 00000000e20c7c40  EFLAGS: 00010206
    RAX: 000000006002e4e7 RBX: 00000000600f1baf RCX: 00000000624074e0
    RDX: 0000000062778000 RSI: 0000000060551c80 RDI: 00000000627af028
    RBP: 00000000e20c7c50 R08: 00000000603ad594 R09: 00000000e20c7b70
    R10: 000000000000135a R11: 00000000603ad422 R12: 0000000000000000
    R13: 0000000062c7af00 R14: 0000000062406d60 R15: 00000000627700b6
    Kernel panic - not syncing: Segfault with no mm
    CPU: 0 UID: 0 PID: 29 Comm: kworker/0:2 Not tainted 6.12.0-rc6-g59b723cd2adb #1
    Workqueue: events mc_work_proc
    Stack:
     627af028 62c7af00 e20c7c80 60276fcd
     62778000 603f5820 627af028 00000000
     e20c7cb0 603a2bcd 627af000 62770010
    Call Trace:
     [<60276fcd>] device_release+0x70/0xba
     [<603a2bcd>] kobject_put+0xba/0xe7
     [<60277265>] put_device+0x19/0x1c
     [<60281266>] platform_device_put+0x26/0x29
     [<60281e5f>] platform_device_unregister+0x2c/0x2e
     [<6002ec9c>] net_remove+0x63/0x69
     [<60031316>] ? mconsole_reply+0x0/0x50
     [<600310c8>] mconsole_remove+0x160/0x1cc
     [<60087d40>] ? __remove_hrtimer+0x38/0x74
     [<60087ff8>] ? hrtimer_try_to_cancel+0x8c/0x98
     [<6006b3cf>] ? dl_server_stop+0x3f/0x48
     [<6006b390>] ? dl_server_stop+0x0/0x48
     [<600672e8>] ? dequeue_entities+0x327/0x390
     [<60038fa6>] ? um_set_signals+0x0/0x43
     [<6003070c>] mc_work_proc+0x77/0x91
     [<60057664>] process_scheduled_works+0x1b3/0x2dd
     [<60055f32>] ? assign_work+0x0/0x58
     [<60057f0a>] worker_thread+0x1e9/0x293
     [<6005406f>] ? set_pf_worker+0x0/0x64
     [<6005d65d>] ? arch_local_irq_save+0x0/0x2d
     [<6005d748>] ? kthread_exit+0x0/0x3a
     [<60057d21>] ? worker_thread+0x0/0x293
     [<6005dbf1>] kthread+0x126/0x12b
     [<600219c5>] new_thread_handler+0x85/0xb6

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-2025-989997
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b90895dd");
  # https://lore.kernel.org/linux-cve-announce/2024122720-CVE-2024-53183-9efa@gregkh
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3c2e6d0e");
  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2024-53183");
  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-2024-53183");

  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:"2024/12/27");
  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:"^20.1050e([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'UOS Server 20.1050e', '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': '1050e',
    'pkgs': [
      {'reference':'kernel-4.19.90-2211.5.0.0178.43', 'sp':'1050e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2211.5.0.0178.43', 'sp':'1050e', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2211.5.0.0178.43', 'sp':'1050e', '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');
}