Unity Linux 20.1070e Security Update: kernel (UTSA-2025-986491)

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

include('compat.inc');

if (description)
{
  script_id(268448);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/10/15");

  script_cve_id("CVE-2023-52899");

  script_name(english:"Unity Linux 20.1070e Security Update: kernel (UTSA-2025-986491)");

  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-2025-986491 advisory.

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

    Add exception protection processing for vd in axi_chan_handle_err function

    Since there is no protection for vd, a kernel panic will be
    triggered here in exceptional cases.

    You can refer to the processing of axi_chan_block_xfer_complete function

    The triggered kernel panic is as follows:

    [   67.848444] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000060
    [   67.848447] Mem abort info:
    [   67.848449]   ESR = 0x96000004
    [   67.848451]   EC = 0x25: DABT (current EL), IL = 32 bits
    [   67.848454]   SET = 0, FnV = 0
    [   67.848456]   EA = 0, S1PTW = 0
    [   67.848458] Data abort info:
    [   67.848460]   ISV = 0, ISS = 0x00000004
    [   67.848462]   CM = 0, WnR = 0
    [   67.848465] user pgtable: 4k pages, 48-bit VAs, pgdp=00000800c4c0b000
    [   67.848468] [0000000000000060] pgd=0000000000000000, p4d=0000000000000000
    [   67.848472] Internal error: Oops: 96000004 [#1] SMP
    [   67.848475] Modules linked in: dmatest
    [   67.848479] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.10.100-emu_x2rc+ #11
    [   67.848483] pstate: 62000085 (nZCv daIf -PAN -UAO +TCO BTYPE=--)
    [   67.848487] pc : axi_chan_handle_err+0xc4/0x230
    [   67.848491] lr : axi_chan_handle_err+0x30/0x230
    [   67.848493] sp : ffff0803fe55ae50
    [   67.848495] x29: ffff0803fe55ae50 x28: ffff800011212200
    [   67.848500] x27: ffff0800c42c0080 x26: ffff0800c097c080
    [   67.848504] x25: ffff800010d33880 x24: ffff80001139d850
    [   67.848508] x23: ffff0800c097c168 x22: 0000000000000000
    [   67.848512] x21: 0000000000000080 x20: 0000000000002000
    [   67.848517] x19: ffff0800c097c080 x18: 0000000000000000
    [   67.848521] x17: 0000000000000000 x16: 0000000000000000
    [   67.848525] x15: 0000000000000000 x14: 0000000000000000
    [   67.848529] x13: 0000000000000000 x12: 0000000000000040
    [   67.848533] x11: ffff0800c0400248 x10: ffff0800c040024a
    [   67.848538] x9 : ffff800010576cd4 x8 : ffff0800c0400270
    [   67.848542] x7 : 0000000000000000 x6 : ffff0800c04003e0
    [   67.848546] x5 : ffff0800c0400248 x4 : ffff0800c4294480
    [   67.848550] x3 : dead000000000100 x2 : dead000000000122
    [   67.848555] x1 : 0000000000000100 x0 : ffff0800c097c168
    [   67.848559] Call trace:
    [   67.848562]  axi_chan_handle_err+0xc4/0x230
    [   67.848566]  dw_axi_dma_interrupt+0xf4/0x590
    [   67.848569]  __handle_irq_event_percpu+0x60/0x220
    [   67.848573]  handle_irq_event+0x64/0x120
    [   67.848576]  handle_fasteoi_irq+0xc4/0x220
    [   67.848580]  __handle_domain_irq+0x80/0xe0
    [   67.848583]  gic_handle_irq+0xc0/0x138
    [   67.848585]  el1_irq+0xc8/0x180
    [   67.848588]  arch_cpu_idle+0x14/0x2c
    [   67.848591]  default_idle_call+0x40/0x16c
    [   67.848594]  do_idle+0x1f0/0x250
    [   67.848597]  cpu_startup_entry+0x2c/0x60
    [   67.848600]  rest_init+0xc0/0xcc
    [   67.848603]  arch_call_rest_init+0x14/0x1c
    [   67.848606]  start_kernel+0x4cc/0x500
    [   67.848610] Code: eb0002ff 9a9f12d6 f2fbd5a2 f2fbd5a3 (a94602c1)
    [   67.848613] ---[ end trace 585a97036f88203a ]---

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-2025-986491
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?6068fa9b");
  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2023-52899");
  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-2023-52899");

  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:"2024/08/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/09/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/10/07");

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


var constraints = [
  {
    'release': '20',
    'sp': '1070e',
    'pkgs': [
      {'reference':'kernel-4.19.90-2403.3.0.0270.103.002', 'sp':'1070e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2403.3.0.0270.103.002', 'sp':'1070e', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2403.3.0.0270.103.002', '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');
}