Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000970)

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

include('compat.inc');

if (description)
{
  script_id(291071);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/01/16");

  script_cve_id("CVE-2016-1583");

  script_name(english:"Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000970)");

  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-2026-000970 advisory.

    The ecryptfs_privileged_open function in fs/ecryptfs/kthread.c in the Linux kernel before 4.6.3 allows
    local users to gain privileges or cause a denial of service (stack memory consumption) via vectors
    involving crafted mmap calls for /proc pathnames, leading to recursive pagefault handling.

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-2026-000970
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?59b73ec6");
  # http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2f36db71009304b3f0b95afacd8eba1f9f046b87
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?60b2830f");
  # http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f5364c150aa645b3d7daa21b5c0b9feaa1c9cd6d
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?6e512bc5");
  # http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00027.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?6232ada5");
  # http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00044.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9e754eed");
  # http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00052.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5673d37e");
  # http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00056.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?dd2d5df5");
  # http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f038b32a");
  # http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00003.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?fb21a1dc");
  # http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00007.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?dd0aec87");
  # http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00008.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?7c6551a4");
  # http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00009.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?63543baf");
  # http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00014.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?aa5695a5");
  # http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00016.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5ec8e3dd");
  # http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00018.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?eaf5c24a");
  # http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00019.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?ee73029a");
  # http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00020.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?8ac2d837");
  # http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00021.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?ab01c8dc");
  # http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00022.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d2748b1a");
  # http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00026.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?0dcf7931");
  # http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00044.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?781faab0");
  # http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00055.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?ff3f6632");
  # http://packetstormsecurity.com/files/137560/Linux-ecryptfs-Stack-Overflow.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?99ff8ed8");
  script_set_attribute(attribute:"see_also", value:"http://rhn.redhat.com/errata/RHSA-2016-2124.html");
  script_set_attribute(attribute:"see_also", value:"http://rhn.redhat.com/errata/RHSA-2016-2766.html");
  script_set_attribute(attribute:"see_also", value:"http://www.debian.org/security/2016/dsa-3607");
  script_set_attribute(attribute:"see_also", value:"http://www.openwall.com/lists/oss-security/2016/06/10/8");
  script_set_attribute(attribute:"see_also", value:"http://www.openwall.com/lists/oss-security/2016/06/22/1");
  script_set_attribute(attribute:"see_also", value:"http://www.securityfocus.com/bid/91157");
  script_set_attribute(attribute:"see_also", value:"http://www.securitytracker.com/id/1036763");
  script_set_attribute(attribute:"see_also", value:"http://www.ubuntu.com/usn/USN-2996-1");
  script_set_attribute(attribute:"see_also", value:"http://www.ubuntu.com/usn/USN-2997-1");
  script_set_attribute(attribute:"see_also", value:"http://www.ubuntu.com/usn/USN-2998-1");
  script_set_attribute(attribute:"see_also", value:"http://www.ubuntu.com/usn/USN-2999-1");
  script_set_attribute(attribute:"see_also", value:"http://www.ubuntu.com/usn/USN-3000-1");
  script_set_attribute(attribute:"see_also", value:"http://www.ubuntu.com/usn/USN-3001-1");
  script_set_attribute(attribute:"see_also", value:"http://www.ubuntu.com/usn/USN-3002-1");
  script_set_attribute(attribute:"see_also", value:"http://www.ubuntu.com/usn/USN-3003-1");
  script_set_attribute(attribute:"see_also", value:"http://www.ubuntu.com/usn/USN-3004-1");
  script_set_attribute(attribute:"see_also", value:"http://www.ubuntu.com/usn/USN-3005-1");
  script_set_attribute(attribute:"see_also", value:"http://www.ubuntu.com/usn/USN-3006-1");
  script_set_attribute(attribute:"see_also", value:"http://www.ubuntu.com/usn/USN-3007-1");
  script_set_attribute(attribute:"see_also", value:"http://www.ubuntu.com/usn/USN-3008-1");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2017:2760");
  script_set_attribute(attribute:"see_also", value:"https://bugs.chromium.org/p/project-zero/issues/detail?id=836");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1344721");
  # https://github.com/torvalds/linux/commit/2f36db71009304b3f0b95afacd8eba1f9f046b87
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?270315c8");
  # https://github.com/torvalds/linux/commit/f0fe970df3838c202ef6c07a4c2b36838ef0a88b
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?043e24f2");
  # https://github.com/torvalds/linux/commit/f5364c150aa645b3d7daa21b5c0b9feaa1c9cd6d
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?98b55b9f");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2016-1583");
  script_set_attribute(attribute:"see_also", value:"https://www.exploit-db.com/exploits/39992/");
  script_set_attribute(attribute:"see_also", value:"https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.3");
  script_set_attribute(attribute:"solution", value:
"Update the affected kernel package.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/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:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2016-1583");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/06/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/01/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/01/16");

  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:"^20.1050e|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-4.19.90-2211.5.0.0178.45', 'sp':'1050e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2211.5.0.0178.45', 'sp':'1050e', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2211.5.0.0178.45', 'sp':'1050e', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE}
    ]
  },
  {
    'release': '20',
    'sp': '1060e',
    'pkgs': [
      {'reference':'kernel-4.19.90-2305.1.0.0199.102', 'sp':'1060e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2305.1.0.0199.102', 'sp':'1060e', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2305.1.0.0199.102', 'sp':'1060e', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE}
    ]
  },
  {
    'release': '20',
    'sp': '1070e',
    'pkgs': [
      {'reference':'kernel-4.19.90-2409.6.0.0297.103.005', 'sp':'1070e', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2409.6.0.0297.103.005', 'sp':'1070e', 'cpu':'amd64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2409.6.0.0297.103.005', 'sp':'1070e', 'cpu':'sw_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'kernel-4.19.90-2409.6.0.0297.103.005', '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_HOLE,
      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');
}