Linux Distros Unpatched Vulnerability : CVE-2026-86922

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

include('compat.inc');

if (description)
{
  script_id(367674);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/20");

  script_cve_id("CVE-2026-86922");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2026-86922");

  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 type confusion issue was addressed with improved state management. This issue is fixed in Safari 27, iOS
    27 and iPadOS 27, macOS Golden Gate 27, visionOS 27. Processing maliciously crafted web content may lead
    to arbitrary code execution. (CVE-2026-86922)

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-2026-86922");
  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: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:N/AC:L/PR:N/UI:N/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:"cvss_score_source", value:"CVE-2026-86922");

  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:"2026/10/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/20");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:7");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:6");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:libwebkit2gtk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:webkitgtk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:webkitgtk-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:webkitgtk-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:webkitgtk3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:webkitgtk3-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:webkitgtk3-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:webkitgtk4");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:webkitgtk4-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:webkitgtk4-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:webkitgtk4-jsc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:webkitgtk4-jsc-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:webkitgtk4-plugin-process-gtk2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libwebkit2gtk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:webkitgtk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:webkitgtk-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:webkitgtk-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:webkitgtk3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:webkitgtk3-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:webkitgtk3-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:webkitgtk4");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:webkitgtk4-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:webkitgtk4-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:webkitgtk4-jsc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:webkitgtk4-jsc-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:webkitgtk4-plugin-process-gtk2");
  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/CentOS Linux-7", "Host/OS/Red Hat Enterprise Linux-6", "Host/OS/Red Hat Enterprise Linux-7");

  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/RedHat/rpm-list"))) audit(AUDIT_PACKAGE_LIST_MISSING);

include('linux_unpatched.inc');

var distro_constraints_array = {
  "Red Hat Enterprise Linux-6": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "6",
        "pkgs": [
          {"reference": "webkitgtk"},
          {"reference": "webkitgtk-devel"},
          {"reference": "webkitgtk-doc"}
        ]
      }
    ]
  },
  "CentOS Linux-7": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "7",
        "pkgs": [
          {"reference": "libwebkit2gtk"},
          {"reference": "webkitgtk3"},
          {"reference": "webkitgtk3-devel"},
          {"reference": "webkitgtk3-doc"},
          {"reference": "webkitgtk4"},
          {"reference": "webkitgtk4-devel"},
          {"reference": "webkitgtk4-doc"},
          {"reference": "webkitgtk4-jsc"},
          {"reference": "webkitgtk4-jsc-devel"},
          {"reference": "webkitgtk4-plugin-process-gtk2"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-7": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "7",
        "pkgs": [
          {"reference": "libwebkit2gtk"},
          {"reference": "webkitgtk3"},
          {"reference": "webkitgtk3-devel"},
          {"reference": "webkitgtk3-doc"},
          {"reference": "webkitgtk4"},
          {"reference": "webkitgtk4-devel"},
          {"reference": "webkitgtk4-doc"},
          {"reference": "webkitgtk4-jsc"},
          {"reference": "webkitgtk4-jsc-devel"},
          {"reference": "webkitgtk4-plugin-process-gtk2"}
        ]
      }
    ]
  }
};

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');
}