Oracle Linux 10 : dracut (ELSA-2026-26532)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2026-26532.
##

include('compat.inc');

if (description)
{
  script_id(328810);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/21");

  script_cve_id("CVE-2026-6893");

  script_name(english:"Oracle Linux 10 : dracut (ELSA-2026-26532)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Oracle Linux host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The remote Oracle Linux 10 host has packages installed that are affected by a vulnerability as referenced in the
ELSA-2026-26532 advisory.

    [107-8.0.1]
    - Suppress stderr for btrfs subvolume check [Orabug: 39059254]
    - fips: add logic for /boot subvolume on BTRFS [Orabug: 36028061]
    - Skip unneeded FIPS logic on UEK with special FIPS [Orabug: 38138800] [Orabug: 38709306]
    - Include correct modprobe into squashfs root [Orabug: 38559936]
    - Ship Oracle IMA certificate [Orabug: 35992862]
    - Ship 98-integrity.conf, populating initramfs with Oracle IMA certificate [Orabug: 35992862]
    - Include sys-fs-fuse-connections.mount if needed [Orabug: 35267570]
    - Change installation dir in network legacy module-setup so that file is never missing [Orabug: 33516170]
    - Fix paths in squash module, so that correct modprobe is installed [Orabug: 33514517]
    - Install missing 68-del-part-node.rules [Orabug: 32827579]
    - Fix permission denied error while upgrading from OL8u2 to OL8u3 [Orabug 32160196]
    - dracut-shutdown.service should run before shutdown.target is invoked [Orabug: 29629738]
    - Update list of necessary files after squashfs execution [Orabug: 29864620]
    - Supress iscsidm error output during non-debug PV boot [Orabug: 29846195]
    - Stop block device service in case system is dropped to emergency shell [Orabug: 29851988]
    - Enable booting from block device if netroot=iscsi has failed [Orabug: 29478156]
    - Calculate relative path for kernel and initrd in 51-dracut-rescue.instal [Orabug: 29503293]
    - Increase timeout when waiting for carrier detection on a network interface [Orabug: 24657828]
    ([email protected])
    - add hyperv-keyboard for Hyper-V Gen2 VM [Orabug: 19191303] (Vaughan Cao)

    [107-8]
    - revert: 'feat(i18n): pull 'drm' or 'simpledrm' module unless excluded'

    [107-7]
    - build: rebuild without an obsoleted patch

    [107-6]
    - fix(base): escape arguments in initqueue hook script generation
    - fix(net-lib): warn on suspicious shell metacharacters in hostname file
    - fix(systemd-networkd): escape DHCP lease values in dhcpopts generation
      Related: RHEL-170844

    [107-5]
    - fix(network-legacy): remove network-legacy completely from the codebase
    - fix(iscsi): replace echo writes with printf to prevent variable injection
      Resolves: RHEL-170844

Tenable has extracted the preceding description block directly from the Oracle 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.");
  script_set_attribute(attribute:"see_also", value:"https://linux.oracle.com/errata/ELSA-2026-26532.html");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:L/Au:N/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:A/AC:H/PR:N/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-2026-6893");

  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:"2026/06/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/07/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/07/21");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:10:2:baseos_patch");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:dracut");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:dracut-caps");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:dracut-config-generic");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:dracut-config-rescue");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:dracut-live");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:dracut-network");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:dracut-squash");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:dracut-tools");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Oracle 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_info.nasl");
  script_require_keys("Host/OracleLinux", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/local_checks_enabled");

  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) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:os_product)) audit(AUDIT_OS_NOT, 'Oracle Linux');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'Oracle Linux');
if (! preg(pattern:"^10([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'Oracle Linux 10.x', 'Oracle Linux ' + os_version);

if (!get_kb_item('Host/RedHat/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Oracle Linux', cpu);

var constraints = [
  {
    'release': '10',
    'pkgs': [
      {'reference':'dracut-107-8.0.1.el10_2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'dracut-caps-107-8.0.1.el10_2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'dracut-config-generic-107-8.0.1.el10_2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'dracut-config-rescue-107-8.0.1.el10_2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'dracut-live-107-8.0.1.el10_2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'dracut-network-107-8.0.1.el10_2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'dracut-squash-107-8.0.1.el10_2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'dracut-tools-107-8.0.1.el10_2', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'dracut-107-8.0.1.el10_2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'dracut-caps-107-8.0.1.el10_2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'dracut-config-generic-107-8.0.1.el10_2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'dracut-config-rescue-107-8.0.1.el10_2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'dracut-live-107-8.0.1.el10_2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'dracut-network-107-8.0.1.el10_2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'dracut-squash-107-8.0.1.el10_2', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'dracut-tools-107-8.0.1.el10_2', '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, 'dracut / dracut-caps / dracut-config-generic / etc');
}