Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-010977)

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

include('compat.inc');

if (description)
{
  script_id(308748);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/04/22");

  script_cve_id("CVE-2022-50560");

  script_name(english:"Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-010977)");

  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-2026-010977 advisory.

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

    drm/meson: explicitly remove aggregate driver at module unload time

    Because component_master_del wasn't being called when unloading the
    meson_drm module, the aggregate device would linger forever in the global
    aggregate_devices list. That means when unloading and reloading the
    meson_dw_hdmi module, component_add would call into
    try_to_bring_up_aggregate_device and find the unbound meson_drm aggregate
    device.

    This would in turn dereference some of the aggregate_device's struct
    entries which point to memory automatically freed by the devres API when
    unbinding the aggregate device from meson_drv_unbind, and trigger an
    use-after-free bug:

    [  +0.000014] =============================================================
    [  +0.000007] BUG: KASAN: use-after-free in find_components+0x468/0x500
    [  +0.000017] Read of size 8 at addr ffff000006731688 by task modprobe/2536
    [  +0.000018] CPU: 4 PID: 2536 Comm: modprobe Tainted: G         C O      5.19.0-rc6-lrmbkasan+ #1
    [  +0.000010] Hardware name: Hardkernel ODROID-N2Plus (DT)
    [  +0.000008] Call trace:
    [  +0.000005]  dump_backtrace+0x1ec/0x280
    [  +0.000011]  show_stack+0x24/0x80
    [  +0.000007]  dump_stack_lvl+0x98/0xd4
    [  +0.000010]  print_address_description.constprop.0+0x80/0x520
    [  +0.000011]  print_report+0x128/0x260
    [  +0.000007]  kasan_report+0xb8/0xfc
    [  +0.000007]  __asan_report_load8_noabort+0x3c/0x50
    [  +0.000009]  find_components+0x468/0x500
    [  +0.000008]  try_to_bring_up_aggregate_device+0x64/0x390
    [  +0.000009]  __component_add+0x1dc/0x49c
    [  +0.000009]  component_add+0x20/0x30
    [  +0.000008]  meson_dw_hdmi_probe+0x28/0x34 [meson_dw_hdmi]
    [  +0.000013]  platform_probe+0xd0/0x220
    [  +0.000008]  really_probe+0x3ac/0xa80
    [  +0.000008]  __driver_probe_device+0x1f8/0x400
    [  +0.000008]  driver_probe_device+0x68/0x1b0
    [  +0.000008]  __driver_attach+0x20c/0x480
    [  +0.000009]  bus_for_each_dev+0x114/0x1b0
    [  +0.000007]  driver_attach+0x48/0x64
    [  +0.000009]  bus_add_driver+0x390/0x564
    [  +0.000007]  driver_register+0x1a8/0x3e4
    [  +0.000009]  __platform_driver_register+0x6c/0x94
    [  +0.000007]  meson_dw_hdmi_platform_driver_init+0x30/0x1000 [meson_dw_hdmi]
    [  +0.000014]  do_one_initcall+0xc4/0x2b0
    [  +0.000008]  do_init_module+0x154/0x570
    [  +0.000010]  load_module+0x1a78/0x1ea4
    [  +0.000008]  __do_sys_init_module+0x184/0x1cc
    [  +0.000008]  __arm64_sys_init_module+0x78/0xb0
    [  +0.000008]  invoke_syscall+0x74/0x260
    [  +0.000008]  el0_svc_common.constprop.0+0xcc/0x260
    [  +0.000009]  do_el0_svc+0x50/0x70
    [  +0.000008]  el0_svc+0x68/0x1a0
    [  +0.000009]  el0t_64_sync_handler+0x11c/0x150
    [  +0.000009]  el0t_64_sync+0x18c/0x190

    [  +0.000014] Allocated by task 902:
    [  +0.000007]  kasan_save_stack+0x2c/0x5c
    [  +0.000009]  __kasan_kmalloc+0x90/0xd0
    [  +0.000007]  __kmalloc_node+0x240/0x580
    [  +0.000010]  memcg_alloc_slab_cgroups+0xa4/0x1ac
    [  +0.000010]  memcg_slab_post_alloc_hook+0xbc/0x4c0
    [  +0.000008]  kmem_cache_alloc_node+0x1d0/0x490
    [  +0.000009]  __alloc_skb+0x1d4/0x310
    [  +0.000010]  alloc_skb_with_frags+0x8c/0x620
    [  +0.000008]  sock_alloc_send_pskb+0x5ac/0x6d0
    [  +0.000010]  unix_dgram_sendmsg+0x2e0/0x12f0
    [  +0.000010]  sock_sendmsg+0xcc/0x110
    [  +0.000007]  sock_write_iter+0x1d0/0x304
    [  +0.000008]  new_sync_write+0x364/0x460
    [  +0.000007]  vfs_write+0x420/0x5ac
    [  +0.000008]  ksys_write+0x19c/0x1f0
    [  +0.000008]  __arm64_sys_write+0x78/0xb0
    [  +0.000007]  invoke_syscall+0x74/0x260
    [  +0.000008]  el0_svc_common.constprop.0+0x1a8/0x260
    [  +0.000009]  do_el0_svc+0x50/0x70
    [  +0.000007]  el0_svc+0x68/0x1a0
    [  +0.000008]  el0t_64_sync_handler+0x11c/0x150
    [  +0.000008]  el0t_64_sync+0x18c/0x190

    [  +0.000013] Freed by task 2509:
    [  +0.000008]  kasan_save_stack+0x2c/0x5c
    [  +0.000007]  kasan_set_track+0x2c/0x40
    [  +0.000008]  kasan_set_free_info+0x28/0x50
    [  +0.000008]  ____kasan_slab_free+0x128/0x1d4
    [  +0.000008]  __kasan_slab_free+0x18/0x24
    [  +0.000007]  slab_free_freelist_hook+0x108/0x230
    [  +0.000010]
    ---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-2026-010977
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?a5bf7459");
  # https://lore.kernel.org/linux-cve-announce/2025102206-CVE-2022-50560-bf0d@gregkh
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?1b01dac0");
  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2022-50560");
  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-2022-50560");

  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:"2021/07/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/04/20");
  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:"^20.1050e|20.1060e|20.1070e([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'UOS Server 20.1050e / 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': '1050e',
    'pkgs': [
      {'reference':'kernel-5.10.0-26', 'sp':'1050e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-26', 'sp':'1050e', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-26', 'sp':'1050e', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE}
    ]
  },
  {
    'release': '20',
    'sp': '1060e',
    'pkgs': [
      {'reference':'kernel-5.10.0-26', 'sp':'1060e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-26', 'sp':'1060e', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-26', 'sp':'1060e', 'cpu':'sw_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-26', 'sp':'1060e', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE}
    ]
  },
  {
    'release': '20',
    'sp': '1070e',
    'pkgs': [
      {'reference':'kernel-5.10.0-26', 'sp':'1070e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-26', 'sp':'1070e', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-26', 'sp':'1070e', 'cpu':'sw_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-26', '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');
}