Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-010882)

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

include('compat.inc');

if (description)
{
  script_id(308711);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/04/21");

  script_cve_id("CVE-2022-50507");

  script_name(english:"Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-010882)");

  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-2026-010882 advisory.

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

    fs/ntfs3: Validate data run offset

    This adds sanity checks for data run offset. We should make sure data
    run offset is legit before trying to unpack them, otherwise we may
    encounter use-after-free or some unexpected memory access behaviors.

    [   82.940342] BUG: KASAN: use-after-free in run_unpack+0x2e3/0x570
    [   82.941180] Read of size 1 at addr ffff888008a8487f by task mount/240
    [   82.941670]
    [   82.942069] CPU: 0 PID: 240 Comm: mount Not tainted 5.19.0+ #15
    [   82.942482] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
    rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
    [   82.943720] Call Trace:
    [   82.944204]  <TASK>
    [   82.944471]  dump_stack_lvl+0x49/0x63
    [   82.944908]  print_report.cold+0xf5/0x67b
    [   82.945141]  ? __wait_on_bit+0x106/0x120
    [   82.945750]  ? run_unpack+0x2e3/0x570
    [   82.946626]  kasan_report+0xa7/0x120
    [   82.947046]  ? run_unpack+0x2e3/0x570
    [   82.947280]  __asan_load1+0x51/0x60
    [   82.947483]  run_unpack+0x2e3/0x570
    [   82.947709]  ? memcpy+0x4e/0x70
    [   82.947927]  ? run_pack+0x7a0/0x7a0
    [   82.948158]  run_unpack_ex+0xad/0x3f0
    [   82.948399]  ? mi_enum_attr+0x14a/0x200
    [   82.948717]  ? run_unpack+0x570/0x570
    [   82.949072]  ? ni_enum_attr_ex+0x1b2/0x1c0
    [   82.949332]  ? ni_fname_type.part.0+0xd0/0xd0
    [   82.949611]  ? mi_read+0x262/0x2c0
    [   82.949970]  ? ntfs_cmp_names_cpu+0x125/0x180
    [   82.950249]  ntfs_iget5+0x632/0x1870
    [   82.950621]  ? ntfs_get_block_bmap+0x70/0x70
    [   82.951192]  ? evict+0x223/0x280
    [   82.951525]  ? iput.part.0+0x286/0x320
    [   82.951969]  ntfs_fill_super+0x1321/0x1e20
    [   82.952436]  ? put_ntfs+0x1d0/0x1d0
    [   82.952822]  ? vsprintf+0x20/0x20
    [   82.953188]  ? mutex_unlock+0x81/0xd0
    [   82.953379]  ? set_blocksize+0x95/0x150
    [   82.954001]  get_tree_bdev+0x232/0x370
    [   82.954438]  ? put_ntfs+0x1d0/0x1d0
    [   82.954700]  ntfs_fs_get_tree+0x15/0x20
    [   82.955049]  vfs_get_tree+0x4c/0x130
    [   82.955292]  path_mount+0x645/0xfd0
    [   82.955615]  ? putname+0x80/0xa0
    [   82.955955]  ? finish_automount+0x2e0/0x2e0
    [   82.956310]  ? kmem_cache_free+0x110/0x390
    [   82.956723]  ? putname+0x80/0xa0
    [   82.957023]  do_mount+0xd6/0xf0
    [   82.957411]  ? path_mount+0xfd0/0xfd0
    [   82.957638]  ? __kasan_check_write+0x14/0x20
    [   82.957948]  __x64_sys_mount+0xca/0x110
    [   82.958310]  do_syscall_64+0x3b/0x90
    [   82.958719]  entry_SYSCALL_64_after_hwframe+0x63/0xcd
    [   82.959341] RIP: 0033:0x7fd0d1ce948a
    [   82.960193] Code: 48 8b 0d 11 fa 2a 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f
    1f 44 00 00 49 89 ca b8 a5 00 00 008
    [   82.961532] RSP: 002b:00007ffe59ff69a8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
    [   82.962527] RAX: ffffffffffffffda RBX: 0000564dcc107060 RCX: 00007fd0d1ce948a
    [   82.963266] RDX: 0000564dcc107260 RSI: 0000564dcc1072e0 RDI: 0000564dcc10fce0
    [   82.963686] RBP: 0000000000000000 R08: 0000564dcc107280 R09: 0000000000000020
    [   82.964272] R10: 00000000c0ed0000 R11: 0000000000000202 R12: 0000564dcc10fce0
    [   82.964785] R13: 0000564dcc107260 R14: 0000000000000000 R15: 00000000ffffffff

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-2026-010882
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?4f31991e");
  # https://lore.kernel.org/linux-cve-announce/2025100423-CVE-2022-50507-9739@gregkh
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?ea9e4a8f");
  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2022-50507");
  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-2022-50507");

  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:"2023/02/08");
  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:"^20.1060e|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-5.10.0-46.6', 'sp':'1060e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-46.6', 'sp':'1060e', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-46.6', 'sp':'1060e', 'cpu':'sw_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-46.6', 'sp':'1060e', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE}
    ]
  },
  {
    'release': '20',
    'sp': '1070e',
    'pkgs': [
      {'reference':'kernel-5.10.0-52', 'sp':'1070e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-52', 'sp':'1070e', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-52', 'sp':'1070e', 'cpu':'sw_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-52', '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');
}