Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: kernel (UTSA-2025-399525)

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

include('compat.inc');

if (description)
{
  script_id(267862);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/10/15");

  script_cve_id("CVE-2024-26695");

  script_name(english:"Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: kernel (UTSA-2025-399525)");

  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-2025-399525 advisory.

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

    crypto: ccp - Fix null pointer dereference in __sev_platform_shutdown_locked

    The SEV platform device can be shutdown with a null psp_master,
    e.g., using DEBUG_TEST_DRIVER_REMOVE.  Found using KASAN:

    [  137.148210] ccp 0000:23:00.1: enabling device (0000 -> 0002)
    [  137.162647] ccp 0000:23:00.1: no command queues available
    [  137.170598] ccp 0000:23:00.1: sev enabled
    [  137.174645] ccp 0000:23:00.1: psp enabled
    [  137.178890] general protection fault, probably for non-canonical address 0xdffffc000000001e: 0000 [#1]
    PREEMPT SMP DEBUG_PAGEALLOC KASAN NOPTI
    [  137.182693] KASAN: null-ptr-deref in range [0x00000000000000f0-0x00000000000000f7]
    [  137.182693] CPU: 93 PID: 1 Comm: swapper/0 Not tainted 6.8.0-rc1+ #311
    [  137.182693] RIP: 0010:__sev_platform_shutdown_locked+0x51/0x180
    [  137.182693] Code: 08 80 3c 08 00 0f 85 0e 01 00 00 48 8b 1d 67 b6 01 08 48 b8 00 00 00 00 00 fc ff df
    48 8d bb f0 00 00 00 48 89 f9 48 c1 e9 03 <80> 3c 01 00 0f 85 fe 00 00 00 48 8b 9b f0 00 00 00 48 85 db 74
    2c
    [  137.182693] RSP: 0018:ffffc900000cf9b0 EFLAGS: 00010216
    [  137.182693] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 000000000000001e
    [  137.182693] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 00000000000000f0
    [  137.182693] RBP: ffffc900000cf9c8 R08: 0000000000000000 R09: fffffbfff58f5a66
    [  137.182693] R10: ffffc900000cf9c8 R11: ffffffffac7ad32f R12: ffff8881e5052c28
    [  137.182693] R13: ffff8881e5052c28 R14: ffff8881758e43e8 R15: ffffffffac64abf8
    [  137.182693] FS:  0000000000000000(0000) GS:ffff889de7000000(0000) knlGS:0000000000000000
    [  137.182693] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
    [  137.182693] CR2: 0000000000000000 CR3: 0000001cf7c7e000 CR4: 0000000000350ef0
    [  137.182693] Call Trace:
    [  137.182693]  <TASK>
    [  137.182693]  ? show_regs+0x6c/0x80
    [  137.182693]  ? __die_body+0x24/0x70
    [  137.182693]  ? die_addr+0x4b/0x80
    [  137.182693]  ? exc_general_protection+0x126/0x230
    [  137.182693]  ? asm_exc_general_protection+0x2b/0x30
    [  137.182693]  ? __sev_platform_shutdown_locked+0x51/0x180
    [  137.182693]  sev_firmware_shutdown.isra.0+0x1e/0x80
    [  137.182693]  sev_dev_destroy+0x49/0x100
    [  137.182693]  psp_dev_destroy+0x47/0xb0
    [  137.182693]  sp_destroy+0xbb/0x240
    [  137.182693]  sp_pci_remove+0x45/0x60
    [  137.182693]  pci_device_remove+0xaa/0x1d0
    [  137.182693]  device_remove+0xc7/0x170
    [  137.182693]  really_probe+0x374/0xbe0
    [  137.182693]  ? srso_return_thunk+0x5/0x5f
    [  137.182693]  __driver_probe_device+0x199/0x460
    [  137.182693]  driver_probe_device+0x4e/0xd0
    [  137.182693]  __driver_attach+0x191/0x3d0
    [  137.182693]  ? __pfx___driver_attach+0x10/0x10
    [  137.182693]  bus_for_each_dev+0x100/0x190
    [  137.182693]  ? __pfx_bus_for_each_dev+0x10/0x10
    [  137.182693]  ? __kasan_check_read+0x15/0x20
    [  137.182693]  ? srso_return_thunk+0x5/0x5f
    [  137.182693]  ? _raw_spin_unlock+0x27/0x50
    [  137.182693]  driver_attach+0x41/0x60
    [  137.182693]  bus_add_driver+0x2a8/0x580
    [  137.182693]  driver_register+0x141/0x480
    [  137.182693]  __pci_register_driver+0x1d6/0x2a0
    [  137.182693]  ? srso_return_thunk+0x5/0x5f
    [  137.182693]  ? esrt_sysfs_init+0x1cd/0x5d0
    [  137.182693]  ? __pfx_sp_mod_init+0x10/0x10
    [  137.182693]  sp_pci_init+0x22/0x30
    [  137.182693]  sp_mod_init+0x14/0x30
    [  137.182693]  ? __pfx_sp_mod_init+0x10/0x10
    [  137.182693]  do_one_initcall+0xd1/0x470
    [  137.182693]  ? __pfx_do_one_initcall+0x10/0x10
    [  137.182693]  ? parameq+0x80/0xf0
    [  137.182693]  ? srso_return_thunk+0x5/0x5f
    [  137.182693]  ? __kmalloc+0x3b0/0x4e0
    [  137.182693]  ? kernel_init_freeable+0x92d/0x1050
    [  137.182693]  ? kasan_populate_vmalloc_pte+0x171/0x190
    [  137.182693]  ? srso_return_thunk+0x5/0x5f
    [  137.182693]  kernel_init_freeable+0xa64/0x1050
    [  137.182693]  ? __pfx_kernel_init+0x10/0x10
    [  137.182693]  kernel_init+0x24/0x160
    [  137.182693]  ? __switch_to_asm+0x3e/0x70
    [  137.182693]  ret_from_fork+0x40/0x80
    [  137.182693]  ? __pfx_kernel_init+0x1
    ---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-2025-399525
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?fbea2823");
  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2024-26695");
  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-2024-26695");

  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:"2024/04/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/07/08");
  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:"^20.1050a|20.1060a|20.1070a([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'UOS Server 20.1050a / 20.1060a / 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': '1050a',
    'pkgs': [
      {'reference':'kernel-5.10.0-27.2', 'sp':'1050a', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-27.2', 'sp':'1050a', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-27.2', 'sp':'1050a', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE}
    ]
  },
  {
    'release': '20',
    'sp': '1060a',
    'pkgs': [
      {'reference':'kernel-5.10.0-46.34', 'sp':'1060a', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-46.34', 'sp':'1060a', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-46.34', 'sp':'1060a', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE}
    ]
  },
  {
    'release': '20',
    'sp': '1070a',
    'pkgs': [
      {'reference':'kernel-5.10.0-74.12', 'sp':'1070a', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-74.12', 'sp':'1070a', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-74.12', 'sp':'1070a', 'cpu':'loongarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-74.12', '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');
}