Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002265)

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

include('compat.inc');

if (description)
{
  script_id(287024);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/02/10");

  script_cve_id("CVE-2014-0196");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2023/06/02");

  script_name(english:"Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002265)");

  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-2026-002265 advisory.

    The n_tty_write function in drivers/tty/n_tty.c in the Linux kernel through 3.14.3 does not properly
    manage tty driver access in the LECHO & !OPOST case, which allows local users to cause a denial of
    service (memory corruption and system crash) or gain privileges by triggering a race condition involving
    read and write operations with long strings.

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-2026-002265
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f7ecad3f");
  script_set_attribute(attribute:"see_also", value:"http://bugzilla.novell.com/show_bug.cgi?id=875690");
  # http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=4291086b1f081b869c6d79e5b7441633dc3ace00
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f3b9b756");
  script_set_attribute(attribute:"see_also", value:"http://linux.oracle.com/errata/ELSA-2014-0771.html");
  # http://lists.opensuse.org/opensuse-security-announce/2014-05/msg00007.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?608f2a36");
  # http://lists.opensuse.org/opensuse-security-announce/2014-05/msg00012.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?e4775e55");
  script_set_attribute(attribute:"see_also", value:"http://pastebin.com/raw.php?i=yTSFUBgZ");
  script_set_attribute(attribute:"see_also", value:"http://rhn.redhat.com/errata/RHSA-2014-0512.html");
  script_set_attribute(attribute:"see_also", value:"http://secunia.com/advisories/59218");
  script_set_attribute(attribute:"see_also", value:"http://secunia.com/advisories/59262");
  script_set_attribute(attribute:"see_also", value:"http://secunia.com/advisories/59599");
  script_set_attribute(attribute:"see_also", value:"http://source.android.com/security/bulletin/2016-07-01.html");
  # http://support.f5.com/kb/en-us/solutions/public/15000/300/sol15319.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b2b3aac5");
  script_set_attribute(attribute:"see_also", value:"http://www.debian.org/security/2014/dsa-2926");
  script_set_attribute(attribute:"see_also", value:"http://www.debian.org/security/2014/dsa-2928");
  script_set_attribute(attribute:"see_also", value:"http://www.exploit-db.com/exploits/33516");
  script_set_attribute(attribute:"see_also", value:"http://www.openwall.com/lists/oss-security/2014/05/05/6");
  script_set_attribute(attribute:"see_also", value:"http://www.osvdb.org/106646");
  script_set_attribute(attribute:"see_also", value:"http://www.ubuntu.com/usn/USN-2196-1");
  script_set_attribute(attribute:"see_also", value:"http://www.ubuntu.com/usn/USN-2197-1");
  script_set_attribute(attribute:"see_also", value:"http://www.ubuntu.com/usn/USN-2198-1");
  script_set_attribute(attribute:"see_also", value:"http://www.ubuntu.com/usn/USN-2199-1");
  script_set_attribute(attribute:"see_also", value:"http://www.ubuntu.com/usn/USN-2200-1");
  script_set_attribute(attribute:"see_also", value:"http://www.ubuntu.com/usn/USN-2201-1");
  script_set_attribute(attribute:"see_also", value:"http://www.ubuntu.com/usn/USN-2202-1");
  script_set_attribute(attribute:"see_also", value:"http://www.ubuntu.com/usn/USN-2203-1");
  script_set_attribute(attribute:"see_also", value:"http://www.ubuntu.com/usn/USN-2204-1");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1094232");
  # https://github.com/torvalds/linux/commit/4291086b1f081b869c6d79e5b7441633dc3ace00
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?95b12ada");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2014-0196");
  # https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2014-0196
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?da9517a6");
  script_set_attribute(attribute:"solution", value:
"Update the affected kernel package.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:H/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:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2014-0196");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");
  script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
  script_set_attribute(attribute:"canvas_package", value:"CANVAS");

  script_set_attribute(attribute:"vuln_publication_date", value:"2013/04/23");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/01/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/01/15");

  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:"^20.1060a|20.1070a([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'UOS Server 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': '1060a',
    'pkgs': [
      {'reference':'kernel-5.10.0-46.38', 'sp':'1060a', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-46.38', 'sp':'1060a', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-46.38', 'sp':'1060a', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE}
    ]
  },
  {
    'release': '20',
    'sp': '1070a',
    'pkgs': [
      {'reference':'kernel-5.10.0-79.5', 'sp':'1070a', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-79.5', 'sp':'1070a', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-79.5', 'sp':'1070a', 'cpu':'loongarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-5.10.0-79.5', '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');
}