Unity Linux 20.1070a Security Update: kernel (UTSA-2025-990265)

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

include('compat.inc');

if (description)
{
  script_id(272671);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/11/05");

  script_cve_id("CVE-2024-53184");

  script_name(english:"Unity Linux 20.1070a Security Update: kernel (UTSA-2025-990265)");

  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-2025-990265 advisory.

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

    um: ubd: Do not use drvdata in release

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

    RIP: 0033:blk_mq_free_tag_set+0x1f/0xba
    RSP: 00000000e2083bf0  EFLAGS: 00010246
    RAX: 000000006021463a RBX: 0000000000000348 RCX: 0000000062604d00
    RDX: 0000000004208060 RSI: 00000000605241a0 RDI: 0000000000000348
    RBP: 00000000e2083c10 R08: 0000000062414010 R09: 00000000601603f7
    R10: 000000000000133a R11: 000000006038c4bd R12: 0000000000000000
    R13: 0000000060213a5c R14: 0000000062405d20 R15: 00000000604f7aa0
    Kernel panic - not syncing: Segfault with no mm
    CPU: 0 PID: 17 Comm: kworker/0:1 Not tainted 6.8.0-rc3-00107-gba3f67c11638 #1
    Workqueue: events mc_work_proc
    Stack:
     00000000 604f7ef0 62c5d000 62405d20
     e2083c30 6002c776 6002c755 600e47ff
     e2083c60 6025ffe3 04208060 603d36e0
    Call Trace:
     [<6002c776>] ubd_device_release+0x21/0x55
     [<6002c755>] ? ubd_device_release+0x0/0x55
     [<600e47ff>] ? kfree+0x0/0x100
     [<6025ffe3>] device_release+0x70/0xba
     [<60381d6a>] kobject_put+0xb5/0xe2
     [<6026027b>] put_device+0x19/0x1c
     [<6026a036>] platform_device_put+0x26/0x29
     [<6026ac5a>] platform_device_unregister+0x2c/0x2e
     [<6002c52e>] ubd_remove+0xb8/0xd6
     [<6002bb74>] ? mconsole_reply+0x0/0x50
     [<6002b926>] mconsole_remove+0x160/0x1cc
     [<6002bbbc>] ? mconsole_reply+0x48/0x50
     [<6003379c>] ? um_set_signals+0x3b/0x43
     [<60061c55>] ? update_min_vruntime+0x14/0x70
     [<6006251f>] ? dequeue_task_fair+0x164/0x235
     [<600620aa>] ? update_cfs_group+0x0/0x40
     [<603a0e77>] ? __schedule+0x0/0x3ed
     [<60033761>] ? um_set_signals+0x0/0x43
     [<6002af6a>] mc_work_proc+0x77/0x91
     [<600520b4>] process_scheduled_works+0x1af/0x2c3
     [<6004ede3>] ? assign_work+0x0/0x58
     [<600527a1>] worker_thread+0x2f7/0x37a
     [<6004ee3b>] ? set_pf_worker+0x0/0x64
     [<6005765d>] ? arch_local_irq_save+0x0/0x2d
     [<60058e07>] ? kthread_exit+0x0/0x3a
     [<600524aa>] ? worker_thread+0x0/0x37a
     [<60058f9f>] kthread+0x130/0x135
     [<6002068e>] 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-2025-990265
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9642368e");
  # https://lore.kernel.org/linux-cve-announce/2024122720-CVE-2024-53184-1a1c@gregkh
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?754a40a1");
  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2024-53184");
  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-2024-53184");

  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:"^20.1070a([^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');
}