Linux Distros Unpatched Vulnerability : CVE-2026-1484

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

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{
  script_id(296776);
  script_version("1.11");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/05/16");

  script_cve_id("CVE-2026-1484");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2026-1484");

  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 flaw was found in the GLib Base64 encoding routine when processing very large input data. Due to
    incorrect use of integer types during length calculation, the library may miscalculate buffer boundaries.
    This can cause memory writes outside the allocated buffer. Applications that process untrusted or
    extremely large Base64 input using GLib may crash or behave unpredictably. (CVE-2026-1484)

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-2026-1484");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/CVE-2026-1484");
  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:L/Au:N/C:N/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:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:U/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-1484");

  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:"plugin_publication_date", value:"2026/01/27");

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  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/CentOS Linux-7", "Host/OS/CentOS Linux-8", "Host/OS/Red Hat Enterprise Linux-10", "Host/OS/Red Hat Enterprise Linux-6", "Host/OS/Red Hat Enterprise Linux-7", "Host/OS/Red Hat Enterprise Linux-8", "Host/OS/Red Hat Enterprise Linux-9", "Host/OS/Ubuntu Linux-14.04", "Host/OS/Ubuntu Linux-16.04", "Host/OS/Ubuntu Linux-18.04", "Host/OS/Ubuntu Linux-20.04");

  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/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 = {
  "Ubuntu Linux-14.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "14.04",
        "pkgs": [
          {"reference": "libgio-fam"},
          {"reference": "libglib2.0-0"},
          {"reference": "libglib2.0-0-dbg"},
          {"reference": "libglib2.0-0-refdbg"},
          {"reference": "libglib2.0-bin"},
          {"reference": "libglib2.0-data"},
          {"reference": "libglib2.0-dev"},
          {"reference": "libglib2.0-doc"},
          {"reference": "libglib2.0-tests"},
          {"reference": "libglib2.0-udeb"}
        ]
      }
    ]
  },
  "Ubuntu Linux-16.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "16.04",
        "pkgs": [
          {"reference": "libgio-fam"},
          {"reference": "libglib2.0-0"},
          {"reference": "libglib2.0-0-dbg"},
          {"reference": "libglib2.0-0-refdbg"},
          {"reference": "libglib2.0-bin"},
          {"reference": "libglib2.0-data"},
          {"reference": "libglib2.0-dev"},
          {"reference": "libglib2.0-doc"},
          {"reference": "libglib2.0-tests"},
          {"reference": "libglib2.0-udeb"}
        ]
      }
    ]
  },
  "Ubuntu Linux-18.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "18.04",
        "pkgs": [
          {"reference": "libgio-fam"},
          {"reference": "libglib2.0-0"},
          {"reference": "libglib2.0-bin"},
          {"reference": "libglib2.0-data"},
          {"reference": "libglib2.0-dev"},
          {"reference": "libglib2.0-dev-bin"},
          {"reference": "libglib2.0-doc"},
          {"reference": "libglib2.0-tests"},
          {"reference": "libglib2.0-udeb"}
        ]
      }
    ]
  },
  "Ubuntu Linux-20.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "20.04",
        "pkgs": [
          {"reference": "libgio-fam"},
          {"reference": "libglib2.0-0"},
          {"reference": "libglib2.0-bin"},
          {"reference": "libglib2.0-data"},
          {"reference": "libglib2.0-dev"},
          {"reference": "libglib2.0-dev-bin"},
          {"reference": "libglib2.0-doc"},
          {"reference": "libglib2.0-tests"},
          {"reference": "libglib2.0-udeb"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-10": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "10",
        "pkgs": [
          {"reference": "bootc"},
          {"reference": "glib2"},
          {"reference": "glib2-devel"},
          {"reference": "glib2-doc"},
          {"reference": "glib2-static"},
          {"reference": "glib2-tests"},
          {"reference": "glycin-loaders"},
          {"reference": "loupe"},
          {"reference": "mingw32-glib2"},
          {"reference": "mingw32-glib2-static"},
          {"reference": "mingw64-glib2"},
          {"reference": "mingw64-glib2-static"},
          {"reference": "papers"},
          {"reference": "papers-devel"},
          {"reference": "papers-libs"},
          {"reference": "papers-nautilus"},
          {"reference": "papers-previewer"},
          {"reference": "papers-thumbnailer"},
          {"reference": "rpm-ostree"},
          {"reference": "rpm-ostree-libs"},
          {"reference": "system-reinstall-bootc"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-6": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "6",
        "pkgs": [
          {"reference": "glib2"},
          {"reference": "glib2-devel"},
          {"reference": "glib2-doc"},
          {"reference": "glib2-static"}
        ]
      }
    ]
  },
  "CentOS Linux-7": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "7",
        "pkgs": [
          {"reference": "glib2"},
          {"reference": "glib2-devel"},
          {"reference": "glib2-doc"},
          {"reference": "glib2-fam"},
          {"reference": "glib2-static"},
          {"reference": "glib2-tests"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-7": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "7",
        "pkgs": [
          {"reference": "glib2"},
          {"reference": "glib2-devel"},
          {"reference": "glib2-doc"},
          {"reference": "glib2-fam"},
          {"reference": "glib2-static"},
          {"reference": "glib2-tests"}
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      }
    ]
  },
  "CentOS Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "glib2"},
          {"reference": "glib2-devel"},
          {"reference": "glib2-doc"},
          {"reference": "glib2-fam"},
          {"reference": "glib2-static"},
          {"reference": "glib2-tests"},
          {"reference": "librsvg2"},
          {"reference": "librsvg2-devel"},
          {"reference": "librsvg2-tools"},
          {"reference": "mingw-glib2"},
          {"reference": "mingw32-glib2"},
          {"reference": "mingw32-glib2-static"},
          {"reference": "mingw64-glib2"},
          {"reference": "mingw64-glib2-static"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "glib2"},
          {"reference": "glib2-devel"},
          {"reference": "glib2-doc"},
          {"reference": "glib2-fam"},
          {"reference": "glib2-static"},
          {"reference": "glib2-tests"},
          {"reference": "librsvg2"},
          {"reference": "librsvg2-devel"},
          {"reference": "librsvg2-tools"},
          {"reference": "mingw-glib2"},
          {"reference": "mingw32-glib2"},
          {"reference": "mingw32-glib2-static"},
          {"reference": "mingw64-glib2"},
          {"reference": "mingw64-glib2-static"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-9": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "9",
        "pkgs": [
          {"reference": "bootc"},
          {"reference": "glib2"},
          {"reference": "glib2-devel"},
          {"reference": "glib2-doc"},
          {"reference": "glib2-static"},
          {"reference": "glib2-tests"},
          {"reference": "librsvg2"},
          {"reference": "librsvg2-devel"},
          {"reference": "librsvg2-tools"},
          {"reference": "mingw-glib2"},
          {"reference": "mingw32-glib2"},
          {"reference": "mingw32-glib2-static"},
          {"reference": "mingw64-glib2"},
          {"reference": "mingw64-glib2-static"},
          {"reference": "system-reinstall-bootc"}
        ]
      }
    ]
  }
};

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');
}