Linux Distros Unpatched Vulnerability : CVE-2026-106547

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

include('compat.inc');

if (description)
{
  script_id(371353);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/23");

  script_cve_id("CVE-2026-106547");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2026-106547");

  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.

  - A heap-based buffer overflow in H5VM_array_fill() in src/H5VM.c in HDF5 before 2.2.0 lets a remote
    attacker cause an application crash and possibly execute arbitrary code with a crafted HDF5 file. When a
    dataset's unallocated chunks are read, H5D__fill_init() fills the fill-value buffer from datatype and
    dataspace metadata in the file. If that metadata is inconsistent with the buffer's allocated size, the
    write goes past the end of the buffer. The attacker can control the content written through the fill value
    stored in the file. (CVE-2026-106547)

Note that Nessus relies on the presence of the package as reported by the vendor.");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-106547");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/CVE-2026-106547");
  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:P/I:P/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:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:U/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-106547");

  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:"2026/10/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/23");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
  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");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:26.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:12.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:13.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:14.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:hdf5");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:r-bioc-rhdf5lib");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:hdf5");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  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", "set_linux_os_id.nasl");
  script_require_keys("Host/cpu", "Host/local_checks_enabled", "global_settings/vendor_unpatched", "Host/OS/identifier");
  script_require_ports("Host/OS/Debian Linux-12", "Host/OS/Debian Linux-13", "Host/OS/Debian Linux-14", "Host/OS/Ubuntu Linux-14.04", "Host/OS/Ubuntu Linux-16.04", "Host/OS/Ubuntu Linux-18.04", "Host/OS/Ubuntu Linux-20.04", "Host/OS/Ubuntu Linux-22.04", "Host/OS/Ubuntu Linux-24.04", "Host/OS/Ubuntu Linux-26.04");

  exit(0);
}

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/Debian/dpkg-l"))) 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": "hdf5-helpers"},
          {"reference": "hdf5-tools"},
          {"reference": "libhdf5-103"},
          {"reference": "libhdf5-103-1"},
          {"reference": "libhdf5-cpp-103"},
          {"reference": "libhdf5-cpp-103-1"},
          {"reference": "libhdf5-dev"},
          {"reference": "libhdf5-doc"},
          {"reference": "libhdf5-fortran-102"},
          {"reference": "libhdf5-hl-100"},
          {"reference": "libhdf5-hl-cpp-100"},
          {"reference": "libhdf5-hl-fortran-100"},
          {"reference": "libhdf5-java"},
          {"reference": "libhdf5-jni"},
          {"reference": "libhdf5-mpi-dev"},
          {"reference": "libhdf5-mpich-103"},
          {"reference": "libhdf5-mpich-103-1"},
          {"reference": "libhdf5-mpich-cpp-103-1"},
          {"reference": "libhdf5-mpich-dev"},
          {"reference": "libhdf5-mpich-fortran-102"},
          {"reference": "libhdf5-mpich-hl-100"},
          {"reference": "libhdf5-mpich-hl-cpp-100"},
          {"reference": "libhdf5-mpich-hl-fortran-100"},
          {"reference": "libhdf5-openmpi-103"},
          {"reference": "libhdf5-openmpi-103-1"},
          {"reference": "libhdf5-openmpi-cpp-103-1"},
          {"reference": "libhdf5-openmpi-dev"},
          {"reference": "libhdf5-openmpi-fortran-102"},
          {"reference": "libhdf5-openmpi-hl-100"},
          {"reference": "libhdf5-openmpi-hl-cpp-100"},
          {"reference": "libhdf5-openmpi-hl-fortran-100"}
        ]
      }
    ]
  },
  "Debian Linux-14": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "14",
        "pkgs": [
          {"reference": "hdf5-helpers"},
          {"reference": "hdf5-tools"},
          {"reference": "libhdf5-320"},
          {"reference": "libhdf5-cpp-320"},
          {"reference": "libhdf5-dev"},
          {"reference": "libhdf5-doc"},
          {"reference": "libhdf5-fortran-320"},
          {"reference": "libhdf5-hl-320"},
          {"reference": "libhdf5-hl-cpp-320"},
          {"reference": "libhdf5-hl-fortran-320"},
          {"reference": "libhdf5-java"},
          {"reference": "libhdf5-jni"},
          {"reference": "libhdf5-mpi-dev"},
          {"reference": "libhdf5-mpich-320"},
          {"reference": "libhdf5-mpich-cpp-320"},
          {"reference": "libhdf5-mpich-dev"},
          {"reference": "libhdf5-mpich-fortran-320"},
          {"reference": "libhdf5-mpich-hl-320"},
          {"reference": "libhdf5-mpich-hl-cpp-320"},
          {"reference": "libhdf5-mpich-hl-fortran-320"},
          {"reference": "libhdf5-openmpi-320"},
          {"reference": "libhdf5-openmpi-cpp-320"},
          {"reference": "libhdf5-openmpi-dev"},
          {"reference": "libhdf5-openmpi-fortran-320"},
          {"reference": "libhdf5-openmpi-hl-320"},
          {"reference": "libhdf5-openmpi-hl-cpp-320"},
          {"reference": "libhdf5-openmpi-hl-fortran-320"}
        ]
      }
    ]
  },
  "Debian Linux-13": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "13",
        "pkgs": [
          {"reference": "hdf5-helpers"},
          {"reference": "hdf5-tools"},
          {"reference": "libhdf5-310"},
          {"reference": "libhdf5-cpp-310"},
          {"reference": "libhdf5-dev"},
          {"reference": "libhdf5-doc"},
          {"reference": "libhdf5-fortran-310"},
          {"reference": "libhdf5-hl-310"},
          {"reference": "libhdf5-hl-cpp-310"},
          {"reference": "libhdf5-hl-fortran-310"},
          {"reference": "libhdf5-java"},
          {"reference": "libhdf5-jni"},
          {"reference": "libhdf5-mpi-dev"},
          {"reference": "libhdf5-mpich-310"},
          {"reference": "libhdf5-mpich-cpp-310"},
          {"reference": "libhdf5-mpich-dev"},
          {"reference": "libhdf5-mpich-fortran-310"},
          {"reference": "libhdf5-mpich-hl-310"},
          {"reference": "libhdf5-mpich-hl-cpp-310"},
          {"reference": "libhdf5-mpich-hl-fortran-310"},
          {"reference": "libhdf5-openmpi-310"},
          {"reference": "libhdf5-openmpi-cpp-310"},
          {"reference": "libhdf5-openmpi-dev"},
          {"reference": "libhdf5-openmpi-fortran-310"},
          {"reference": "libhdf5-openmpi-hl-310"},
          {"reference": "libhdf5-openmpi-hl-cpp-310"},
          {"reference": "libhdf5-openmpi-hl-fortran-310"}
        ]
      }
    ]
  },
  "Ubuntu Linux-14.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "14.04",
        "pkgs": [
          {"reference": "hdf5"}
        ]
      }
    ]
  },
  "Ubuntu Linux-16.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "16.04",
        "pkgs": [
          {"reference": "hdf5"}
        ]
      }
    ]
  },
  "Ubuntu Linux-18.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "18.04",
        "pkgs": [
          {"reference": "hdf5"}
        ]
      }
    ]
  },
  "Ubuntu Linux-20.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "20.04",
        "pkgs": [
          {"reference": "hdf5"},
          {"reference": "r-bioc-rhdf5lib"}
        ]
      }
    ]
  },
  "Ubuntu Linux-22.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "22.04",
        "pkgs": [
          {"reference": "hdf5"},
          {"reference": "r-bioc-rhdf5lib"}
        ]
      }
    ]
  },
  "Ubuntu Linux-24.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "24.04",
        "pkgs": [
          {"reference": "hdf5"},
          {"reference": "r-bioc-rhdf5lib"}
        ]
      }
    ]
  },
  "Ubuntu Linux-26.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "26.04",
        "pkgs": [
          {"reference": "hdf5"},
          {"reference": "r-bioc-rhdf5lib"}
        ]
      }
    ]
  }
};

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 third_party_support = get_kb_item('Host/OS/extended-third-party');
if (!empty_or_null(third_party_support)) {
    var third_party_vendors = distro_constraints_values['third_party'];
    if (!empty_or_null(third_party_vendors)) {
        var vendor;
        foreach vendor (third_party_vendors) {
            if (vendor == third_party_support) exit(0, 'A third party management patch is available for this vulnerability from ' + vendor + '.\n');
        }
    }
}

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');
}