Unity Linux 20.1070e Security Update: kernel (UTSA-2026-131778)

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

include('compat.inc');

if (description)
{
  script_id(366574);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/16");

  script_cve_id("CVE-2022-48916");

  script_name(english:"Unity Linux 20.1070e Security Update: kernel (UTSA-2026-131778)");

  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-2026-131778 advisory.

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

    iommu/vt-d: Fix double list_add when enabling VMD in scalable mode

    When enabling VMD and IOMMU scalable mode, the following kernel panic
    call trace/kernel log is shown in Eagle Stream platform (Sapphire Rapids
    CPU) during booting:

    pci 0000:59:00.5: Adding to iommu group 42
    ...
    vmd 0000:59:00.5: PCI host bridge to bus 10000:80
    pci 10000:80:01.0: [8086:352a] type 01 class 0x060400
    pci 10000:80:01.0: reg 0x10: [mem 0x00000000-0x0001ffff 64bit]
    pci 10000:80:01.0: enabling Extended Tags
    pci 10000:80:01.0: PME# supported from D0 D3hot D3cold
    pci 10000:80:01.0: DMAR: Setup RID2PASID failed
    pci 10000:80:01.0: Failed to add to iommu group 42: -16
    pci 10000:80:03.0: [8086:352b] type 01 class 0x060400
    pci 10000:80:03.0: reg 0x10: [mem 0x00000000-0x0001ffff 64bit]
    pci 10000:80:03.0: enabling Extended Tags
    pci 10000:80:03.0: PME# supported from D0 D3hot D3cold
    ------------[ cut here ]------------
    kernel BUG at lib/list_debug.c:29!
    invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
    CPU: 0 PID: 7 Comm: kworker/0:1 Not tainted 5.17.0-rc3+ #7
    Hardware name: Lenovo ThinkSystem SR650V3/SB27A86647, BIOS ESE101Y-1.00 01/13/2022
    Workqueue: events work_for_cpu_fn
    RIP: 0010:__list_add_valid.cold+0x26/0x3f
    Code: 9a 4a ab ff 4c 89 c1 48 c7 c7 40 0c d9 9e e8 b9 b1 fe ff 0f
          0b 48 89 f2 4c 89 c1 48 89 fe 48 c7 c7 f0 0c d9 9e e8 a2 b1
          fe ff <0f> 0b 48 89 d1 4c 89 c6 4c 89 ca 48 c7 c7 98 0c d9
          9e e8 8b b1 fe
    RSP: 0000:ff5ad434865b3a40 EFLAGS: 00010246
    RAX: 0000000000000058 RBX: ff4d61160b74b880 RCX: ff4d61255e1fffa8
    RDX: 0000000000000000 RSI: 00000000fffeffff RDI: ffffffff9fd34f20
    RBP: ff4d611d8e245c00 R08: 0000000000000000 R09: ff5ad434865b3888
    R10: ff5ad434865b3880 R11: ff4d61257fdc6fe8 R12: ff4d61160b74b8a0
    R13: ff4d61160b74b8a0 R14: ff4d611d8e245c10 R15: ff4d611d8001ba70
    FS:  0000000000000000(0000) GS:ff4d611d5ea00000(0000) knlGS:0000000000000000
    CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
    CR2: ff4d611fa1401000 CR3: 0000000aa0210001 CR4: 0000000000771ef0
    DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
    DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400
    PKRU: 55555554
    Call Trace:
     <TASK>
     intel_pasid_alloc_table+0x9c/0x1d0
     dmar_insert_one_dev_info+0x423/0x540
     ? device_to_iommu+0x12d/0x2f0
     intel_iommu_attach_device+0x116/0x290
     __iommu_attach_device+0x1a/0x90
     iommu_group_add_device+0x190/0x2c0
     __iommu_probe_device+0x13e/0x250
     iommu_probe_device+0x24/0x150
     iommu_bus_notifier+0x69/0x90
     blocking_notifier_call_chain+0x5a/0x80
     device_add+0x3db/0x7b0
     ? arch_memremap_can_ram_remap+0x19/0x50
     ? memremap+0x75/0x140
     pci_device_add+0x193/0x1d0
     pci_scan_single_device+0xb9/0xf0
     pci_scan_slot+0x4c/0x110
     pci_scan_child_bus_extend+0x3a/0x290
     vmd_enable_domain.constprop.0+0x63e/0x820
     vmd_probe+0x163/0x190
     local_pci_probe+0x42/0x80
     work_for_cpu_fn+0x13/0x20
     process_one_work+0x1e2/0x3b0
     worker_thread+0x1c4/0x3a0
     ? rescuer_thread+0x370/0x370
     kthread+0xc7/0xf0
     ? kthread_complete_and_exit+0x20/0x20
     ret_from_fork+0x1f/0x30
     </TASK>
    Modules linked in:
    ---[ end trace 0000000000000000 ]---
    ...
    Kernel panic - not syncing: Fatal exception
    Kernel Offset: 0x1ca00000 from 0xffffffff81000000 (relocation range:
    0xffffffff80000000-0xffffffffbfffffff)
    ---[ end Kernel panic - not syncing: Fatal exception ]---

    The following 'lspci' output shows devices '10000:80:*' are subdevices of
    the VMD device 0000:59:00.5:

      $ lspci
      ...
      0000:59:00.5 RAID bus controller: Intel Corporation Volume Management Device NVMe RAID Controller (rev
    20)
      ...
      10000:80:01.0 PCI bridge: Intel Corporation Device 352a (rev 03)
      10000:80:03.0 PCI bridge: Intel Corporation Device 352b (rev 03)
      10000:80:05.0 PCI bridge: Intel Corporation Device 352c (rev 03)
      10000:80:07.0 PCI bridge: Intel Corporation Device 352d (rev 03)
      10000:81:00.0 Non-Volatile memory controller: Intel Corporation NVMe Datacenter SSD [3DNAND, Beta Rock
    Controller]
      10000:82:00
    ---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-2026-131778
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?517e6f23");
  # https://lore.kernel.org/linux-cve-announce/2024082216-CVE-2022-48916-8734@gregkh
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?349cb030");
  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2022-48916");
  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-2022-48916");

  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:"2024/08/22");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/10/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/16");

  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:"^(20.1070e)([^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 && 'sw_64' >!< cpu && 'x86_64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'UOS Server', cpu);


var constraints = [
  {
    'release': '20',
    'sp': '1070e',
    'pkgs': [
      {'reference':'kernel-5.10.0-79.26.uel20', 'sp':'1070e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-79.26.uel20', 'sp':'1070e', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-79.26.uel20', 'sp':'1070e', 'cpu':'sw_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-79.26.uel20', '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');
}