Linux Distros Unpatched Vulnerability : CVE-2026-22185

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

include('compat.inc');

if (description)
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  script_id(282442);
  script_version("1.11");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/05/22");

  script_cve_id("CVE-2026-22185");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2026-22185");

  script_set_attribute(attribute:"synopsis", value:
"The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be
patched.");
  script_set_attribute(attribute:"description", value:
"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied
patch available.

  - OpenLDAP Lightning Memory-Mapped Database (LMDB) versions up to and including 0.9.14, prior to commit
    8e1fda8, contain a heap buffer underflow in the readline() function of mdb_load. When processing malformed
    input containing an embedded NUL byte, an unsigned offset calculation can underflow and cause an out-of-
    bounds read of one byte before the allocated heap buffer. This can cause mdb_load to crash, leading to a
    limited denial-of-service condition. (CVE-2026-22185)

Note that Nessus relies on the presence of the package as reported by the vendor.");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2026-22185");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-22185");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/CVE-2026-22185");
  script_set_attribute(attribute:"solution", value:
"There is no known solution at this time.");
  script_set_attribute(attribute:"agent", value:"unix");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:U/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:U/RC:C");
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  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-22185");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_set_attribute(attribute:"vendor_unpatched", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/01/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/01/08");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:lts");
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  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:22.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:24.04:-:lts");
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  script_dependencies("ssh_get_info2.nasl", "set_linux_os_id.nasl");
  script_require_keys("Host/cpu", "Host/local_checks_enabled", "global_settings/vendor_unpatched", "Host/OS/identifier");
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if (!get_kb_item("global_settings/vendor_unpatched")) exit(0, "Unpatched Vulnerabilities Detection not active.");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (empty_or_null(get_one_kb_item("Host/CentOS/rpm-list")) && empty_or_null(get_one_kb_item("Host/Debian/dpkg-l")) && empty_or_null(get_one_kb_item("Host/RedHat/rpm-list"))) audit(AUDIT_PACKAGE_LIST_MISSING);

include('linux_unpatched.inc');

var distro_constraints_array = {
  "Debian Linux-12": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "12",
        "pkgs": [
          {"reference": "ldap-utils"},
          {"reference": "libldap-2.5-0"},
          {"reference": "libldap-common"},
          {"reference": "libldap-dev"},
          {"reference": "libldap2-dev"},
          {"reference": "liblmdb-dev"},
          {"reference": "liblmdb0"},
          {"reference": "lmdb-doc"},
          {"reference": "lmdb-utils"},
          {"reference": "slapd"},
          {"reference": "slapd-contrib"},
          {"reference": "slapd-smbk5pwd"},
          {"reference": "slapi-dev"}
        ]
      }
    ]
  },
  "Debian Linux-11": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "11",
        "pkgs": [
          {"reference": "ldap-utils"},
          {"reference": "libldap-2.4-2"},
          {"reference": "libldap-common"},
          {"reference": "libldap2-dev"},
          {"reference": "liblmdb-dev"},
          {"reference": "liblmdb0"},
          {"reference": "lmdb-doc"},
          {"reference": "lmdb-utils"},
          {"reference": "slapd"},
          {"reference": "slapd-contrib"},
          {"reference": "slapd-smbk5pwd"},
          {"reference": "slapi-dev"}
        ]
      }
    ]
  },
  "Debian Linux-13": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "13",
        "pkgs": [
          {"reference": "ldap-utils"},
          {"reference": "libldap-common"},
          {"reference": "libldap-dev"},
          {"reference": "libldap2"},
          {"reference": "libldap2-dev"},
          {"reference": "liblmdb-dev"},
          {"reference": "liblmdb0"},
          {"reference": "lmdb-doc"},
          {"reference": "lmdb-utils"},
          {"reference": "slapd"},
          {"reference": "slapd-contrib"},
          {"reference": "slapi-dev"}
        ]
      }
    ]
  },
  "Debian Linux-14": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "14",
        "pkgs": [
          {"reference": "ldap-utils"},
          {"reference": "libldap-common"},
          {"reference": "libldap-dev"},
          {"reference": "libldap2"},
          {"reference": "libldap2-dev"},
          {"reference": "liblmdb-dev"},
          {"reference": "liblmdb0"},
          {"reference": "lmdb-doc"},
          {"reference": "lmdb-utils"},
          {"reference": "slapd"},
          {"reference": "slapd-contrib"},
          {"reference": "slapi-dev"}
        ]
      }
    ]
  },
  "Ubuntu Linux-16.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "16.04",
        "pkgs": [
          {"reference": "lmdb"}
        ]
      }
    ]
  },
  "Ubuntu Linux-18.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "18.04",
        "pkgs": [
          {"reference": "lmdb"}
        ]
      }
    ]
  },
  "Ubuntu Linux-20.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "20.04",
        "pkgs": [
          {"reference": "liblmdb-dev"},
          {"reference": "liblmdb0"},
          {"reference": "lmdb-doc"},
          {"reference": "lmdb-utils"}
        ]
      }
    ]
  },
  "Ubuntu Linux-22.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "22.04",
        "pkgs": [
          {"reference": "liblmdb-dev"},
          {"reference": "liblmdb0"},
          {"reference": "lmdb-doc"},
          {"reference": "lmdb-utils"}
        ]
      }
    ]
  },
  "Ubuntu Linux-24.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "24.04",
        "pkgs": [
          {"reference": "liblmdb-dev"},
          {"reference": "liblmdb0"},
          {"reference": "lmdb-doc"},
          {"reference": "lmdb-utils"}
        ]
      }
    ]
  },
  "Ubuntu Linux-25.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "25.04",
        "pkgs": [
          {"reference": "liblmdb-dev"},
          {"reference": "liblmdb0"},
          {"reference": "lmdb-doc"},
          {"reference": "lmdb-utils"}
        ]
      }
    ]
  },
  "Ubuntu Linux-25.10": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "25.10",
        "pkgs": [
          {"reference": "liblmdb-dev"},
          {"reference": "liblmdb0"},
          {"reference": "lmdb-doc"},
          {"reference": "lmdb-utils"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-10": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "10",
        "pkgs": [
          {"reference": "openldap"},
          {"reference": "openldap-clients"},
          {"reference": "openldap-compat"},
          {"reference": "openldap-devel"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-9": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "9",
        "pkgs": [
          {"reference": "openldap"},
          {"reference": "openldap-clients"},
          {"reference": "openldap-compat"},
          {"reference": "openldap-devel"}
        ]
      }
    ]
  },
  "CentOS Linux-7": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "7",
        "pkgs": [
          {"reference": "compat-openldap"},
          {"reference": "openldap"},
          {"reference": "openldap-clients"},
          {"reference": "openldap-devel"},
          {"reference": "openldap-servers"},
          {"reference": "openldap-servers-sql"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-6": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "6",
        "pkgs": [
          {"reference": "compat-openldap"},
          {"reference": "openldap"},
          {"reference": "openldap-clients"},
          {"reference": "openldap-devel"},
          {"reference": "openldap-servers"},
          {"reference": "openldap-servers-sql"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-7": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "7",
        "pkgs": [
          {"reference": "compat-openldap"},
          {"reference": "openldap"},
          {"reference": "openldap-clients"},
          {"reference": "openldap-devel"},
          {"reference": "openldap-servers"},
          {"reference": "openldap-servers-sql"}
        ]
      }
    ]
  },
  "CentOS Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "openldap"},
          {"reference": "openldap-clients"},
          {"reference": "openldap-devel"},
          {"reference": "openldap-servers"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "openldap"},
          {"reference": "openldap-clients"},
          {"reference": "openldap-devel"},
          {"reference": "openldap-servers"}
        ]
      }
    ]
  }
};

var distro_constraints_values = linux_unpatched::get_distro_constraints(distro_constraints_arr:distro_constraints_array);
if (empty_or_null(distro_constraints_values)) audit(AUDIT_HOST_NOT, 'affected');
var report = linux_unpatched::check_unpatched_constraints(distro_constraints_values:distro_constraints_values);

if (!empty_or_null(report))
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : report
  );
  exit(0);
}
else
{
  audit(AUDIT_HOST_NOT, 'affected');
}