Unity Linux 20.1070a Security Update: kernel (UTSA-2025-990587)

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

include('compat.inc');

if (description)
{
  script_id(274172);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/11/06");

  script_cve_id("CVE-2024-40942");

  script_name(english:"Unity Linux 20.1070a Security Update: kernel (UTSA-2025-990587)");

  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-2025-990587 advisory.

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

    wifi: mac80211: mesh: Fix leak of mesh_preq_queue objects

    The hwmp code use objects of type mesh_preq_queue, added to a list in
    ieee80211_if_mesh, to keep track of mpath we need to resolve. If the mpath
    gets deleted, ex mesh interface is removed, the entries in that list will
    never get cleaned. Fix this by flushing all corresponding items of the
    preq_queue in mesh_path_flush_pending().

    This should take care of KASAN reports like this:

    unreferenced object 0xffff00000668d800 (size 128):
      comm kworker/u8:4, pid 67, jiffies 4295419552 (age 1836.444s)
      hex dump (first 32 bytes):
        00 1f 05 09 00 00 ff ff 00 d5 68 06 00 00 ff ff  ..........h.....
        8e 97 ea eb 3e b8 01 00 00 00 00 00 00 00 00 00  ....>...........
      backtrace:
        [<000000007302a0b6>] __kmem_cache_alloc_node+0x1e0/0x35c
        [<00000000049bd418>] kmalloc_trace+0x34/0x80
        [<0000000000d792bb>] mesh_queue_preq+0x44/0x2a8
        [<00000000c99c3696>] mesh_nexthop_resolve+0x198/0x19c
        [<00000000926bf598>] ieee80211_xmit+0x1d0/0x1f4
        [<00000000fc8c2284>] __ieee80211_subif_start_xmit+0x30c/0x764
        [<000000005926ee38>] ieee80211_subif_start_xmit+0x9c/0x7a4
        [<000000004c86e916>] dev_hard_start_xmit+0x174/0x440
        [<0000000023495647>] __dev_queue_xmit+0xe24/0x111c
        [<00000000cfe9ca78>] batadv_send_skb_packet+0x180/0x1e4
        [<000000007bacc5d5>] batadv_v_elp_periodic_work+0x2f4/0x508
        [<00000000adc3cd94>] process_one_work+0x4b8/0xa1c
        [<00000000b36425d1>] worker_thread+0x9c/0x634
        [<0000000005852dd5>] kthread+0x1bc/0x1c4
        [<000000005fccd770>] ret_from_fork+0x10/0x20
    unreferenced object 0xffff000009051f00 (size 128):
      comm kworker/u8:4, pid 67, jiffies 4295419553 (age 1836.440s)
      hex dump (first 32 bytes):
        90 d6 92 0d 00 00 ff ff 00 d8 68 06 00 00 ff ff  ..........h.....
        36 27 92 e4 02 e0 01 00 00 58 79 06 00 00 ff ff  6'.......Xy.....
      backtrace:
        [<000000007302a0b6>] __kmem_cache_alloc_node+0x1e0/0x35c
        [<00000000049bd418>] kmalloc_trace+0x34/0x80
        [<0000000000d792bb>] mesh_queue_preq+0x44/0x2a8
        [<00000000c99c3696>] mesh_nexthop_resolve+0x198/0x19c
        [<00000000926bf598>] ieee80211_xmit+0x1d0/0x1f4
        [<00000000fc8c2284>] __ieee80211_subif_start_xmit+0x30c/0x764
        [<000000005926ee38>] ieee80211_subif_start_xmit+0x9c/0x7a4
        [<000000004c86e916>] dev_hard_start_xmit+0x174/0x440
        [<0000000023495647>] __dev_queue_xmit+0xe24/0x111c
        [<00000000cfe9ca78>] batadv_send_skb_packet+0x180/0x1e4
        [<000000007bacc5d5>] batadv_v_elp_periodic_work+0x2f4/0x508
        [<00000000adc3cd94>] process_one_work+0x4b8/0xa1c
        [<00000000b36425d1>] worker_thread+0x9c/0x634
        [<0000000005852dd5>] kthread+0x1bc/0x1c4
        [<000000005fccd770>] ret_from_fork+0x10/0x20

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-2025-990587
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b8427897");
  # https://lore.kernel.org/linux-cve-announce/2024071219-CVE-2024-40942-4af1@gregkh
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?93ac51bf");
  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2024-40942");
  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-2024-40942");

  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:"2024/04/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/11/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/11/06");

  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-4.19.0-91.82.190.003', 'sp':'1070a', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.0-91.82.190.003', 'sp':'1070a', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.0-91.82.190.003', 'sp':'1070a', 'cpu':'loongarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.0-91.82.190.003', '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');
}