Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-013172)

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

include('compat.inc');

if (description)
{
  script_id(308037);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/04/21");

  script_cve_id("CVE-2023-52975");

  script_name(english:"Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-013172)");

  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-2026-013172 advisory.

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

    scsi: iscsi_tcp: Fix UAF during logout when accessing the shost ipaddress

    Bug report and analysis from Ding Hui.

    During iSCSI session logout, if another task accesses the shost ipaddress
    attr, we can get a KASAN UAF report like this:

    [  276.942144] BUG: KASAN: use-after-free in _raw_spin_lock_bh+0x78/0xe0
    [  276.942535] Write of size 4 at addr ffff8881053b45b8 by task cat/4088
    [  276.943511] CPU: 2 PID: 4088 Comm: cat Tainted: G            E      6.1.0-rc8+ #3
    [  276.943997] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS
    6.00 11/12/2020
    [  276.944470] Call Trace:
    [  276.944943]  <TASK>
    [  276.945397]  dump_stack_lvl+0x34/0x48
    [  276.945887]  print_address_description.constprop.0+0x86/0x1e7
    [  276.946421]  print_report+0x36/0x4f
    [  276.947358]  kasan_report+0xad/0x130
    [  276.948234]  kasan_check_range+0x35/0x1c0
    [  276.948674]  _raw_spin_lock_bh+0x78/0xe0
    [  276.949989]  iscsi_sw_tcp_host_get_param+0xad/0x2e0 [iscsi_tcp]
    [  276.951765]  show_host_param_ISCSI_HOST_PARAM_IPADDRESS+0xe9/0x130 [scsi_transport_iscsi]
    [  276.952185]  dev_attr_show+0x3f/0x80
    [  276.953005]  sysfs_kf_seq_show+0x1fb/0x3e0
    [  276.953401]  seq_read_iter+0x402/0x1020
    [  276.954260]  vfs_read+0x532/0x7b0
    [  276.955113]  ksys_read+0xed/0x1c0
    [  276.955952]  do_syscall_64+0x38/0x90
    [  276.956347]  entry_SYSCALL_64_after_hwframe+0x63/0xcd
    [  276.956769] RIP: 0033:0x7f5d3a679222
    [  276.957161] Code: c0 e9 b2 fe ff ff 50 48 8d 3d 32 c0 0b 00 e8 a5 fe 01 00 0f 1f 44 00 00 f3 0f 1e fa
    64 8b 04 25 18 00 00 00 85 c0 75 10 0f 05 <48> 3d 00 f0 ff ff 77 56 c3 0f 1f 44 00 00 48 83 ec 28 48 89 54
    24
    [  276.958009] RSP: 002b:00007ffc864d16a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
    [  276.958431] RAX: ffffffffffffffda RBX: 0000000000020000 RCX: 00007f5d3a679222
    [  276.958857] RDX: 0000000000020000 RSI: 00007f5d3a4fe000 RDI: 0000000000000003
    [  276.959281] RBP: 00007f5d3a4fe000 R08: 00000000ffffffff R09: 0000000000000000
    [  276.959682] R10: 0000000000000022 R11: 0000000000000246 R12: 0000000000020000
    [  276.960126] R13: 0000000000000003 R14: 0000000000000000 R15: 0000557a26dada58
    [  276.960536]  </TASK>
    [  276.961357] Allocated by task 2209:
    [  276.961756]  kasan_save_stack+0x1e/0x40
    [  276.962170]  kasan_set_track+0x21/0x30
    [  276.962557]  __kasan_kmalloc+0x7e/0x90
    [  276.962923]  __kmalloc+0x5b/0x140
    [  276.963308]  iscsi_alloc_session+0x28/0x840 [scsi_transport_iscsi]
    [  276.963712]  iscsi_session_setup+0xda/0xba0 [libiscsi]
    [  276.964078]  iscsi_sw_tcp_session_create+0x1fd/0x330 [iscsi_tcp]
    [  276.964431]  iscsi_if_create_session.isra.0+0x50/0x260 [scsi_transport_iscsi]
    [  276.964793]  iscsi_if_recv_msg+0xc5a/0x2660 [scsi_transport_iscsi]
    [  276.965153]  iscsi_if_rx+0x198/0x4b0 [scsi_transport_iscsi]
    [  276.965546]  netlink_unicast+0x4d5/0x7b0
    [  276.965905]  netlink_sendmsg+0x78d/0xc30
    [  276.966236]  sock_sendmsg+0xe5/0x120
    [  276.966576]  ____sys_sendmsg+0x5fe/0x860
    [  276.966923]  ___sys_sendmsg+0xe0/0x170
    [  276.967300]  __sys_sendmsg+0xc8/0x170
    [  276.967666]  do_syscall_64+0x38/0x90
    [  276.968028]  entry_SYSCALL_64_after_hwframe+0x63/0xcd
    [  276.968773] Freed by task 2209:
    [  276.969111]  kasan_save_stack+0x1e/0x40
    [  276.969449]  kasan_set_track+0x21/0x30
    [  276.969789]  kasan_save_free_info+0x2a/0x50
    [  276.970146]  __kasan_slab_free+0x106/0x190
    [  276.970470]  __kmem_cache_free+0x133/0x270
    [  276.970816]  device_release+0x98/0x210
    [  276.971145]  kobject_cleanup+0x101/0x360
    [  276.971462]  iscsi_session_teardown+0x3fb/0x530 [libiscsi]
    [  276.971775]  iscsi_sw_tcp_session_destroy+0xd8/0x130 [iscsi_tcp]
    [  276.972143]  iscsi_if_recv_msg+0x1bf1/0x2660 [scsi_transport_iscsi]
    [  276.972485]  iscsi_if_rx+0x198/0x4b0 [scsi_transport_iscsi]
    [  276.972808]  netlink_unicast+0x4d5/0x7b0
    [  276.973201]  netlink_sendmsg+0x78d/0xc30
    [  276.973544]  sock_sendmsg+0xe5/0x120
    [  276.973864]  ____sys_sendmsg+0x5fe/0x860
    [  276.974248]  ___sys_
    ---truncated---

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-2026-013172
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d8a8d2e7");
  # https://lore.kernel.org/linux-cve-announce/2025032704-CVE-2023-52975-155c@gregkh
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9a6869cb");
  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2023-52975");
  script_set_attribute(attribute:"solution", value:
"Update the affected kernel package.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/C:C/I:C/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:H/I:H/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-2023-52975");

  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:"2024/01/30");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/04/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/04/21");

  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) 2026 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:"^20.1060e|20.1070e([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'UOS Server 20.1060e / 20.1070e', '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 && 'sw_64' >!< cpu && 'x86_64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'UOS Server', cpu);


var constraints = [
  {
    'release': '20',
    'sp': '1060e',
    'pkgs': [
      {'reference':'kernel-4.19.90-2302.5.0', 'sp':'1060e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2302.5.0', 'sp':'1060e', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2302.5.0', 'sp':'1060e', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE}
    ]
  },
  {
    'release': '20',
    'sp': '1070e',
    'pkgs': [
      {'reference':'kernel-4.19.90-2302.5.0', 'sp':'1070e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2302.5.0', 'sp':'1070e', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2302.5.0', 'sp':'1070e', 'cpu':'sw_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2302.5.0', 'sp':'1070e', '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');
}