Linux Distros Unpatched Vulnerability : CVE-2026-22740

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

include('compat.inc');

if (description)
{
  script_id(312216);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/05/22");

  script_cve_id("CVE-2026-22740");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2026-22740");

  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 WebFlux server application that processes multipart requests creates temp files for parts larger than 10
    K. Under some circumstances, temp files may remain not deleted after the request is fully processed. This
    allows an attacker to consume available disk space. Older, unsupported versions are also affected.
    (CVE-2026-22740)

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-2026-22740");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/CVE-2026-22740");
  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:N/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:L/UI:N/S:U/C:N/I:N/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-2026-22740");

  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:"2026/04/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/05/05");

  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:25.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:11.0");
  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:libspring-java");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libspring-java");
  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-11", "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-25.10");

  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-11": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "11",
        "pkgs": [
          {"reference": "libspring-aop-java"},
          {"reference": "libspring-beans-java"},
          {"reference": "libspring-context-java"},
          {"reference": "libspring-context-support-java"},
          {"reference": "libspring-core-java"},
          {"reference": "libspring-expression-java"},
          {"reference": "libspring-instrument-java"},
          {"reference": "libspring-jdbc-java"},
          {"reference": "libspring-jms-java"},
          {"reference": "libspring-messaging-java"},
          {"reference": "libspring-orm-java"},
          {"reference": "libspring-oxm-java"},
          {"reference": "libspring-test-java"},
          {"reference": "libspring-transaction-java"},
          {"reference": "libspring-web-java"},
          {"reference": "libspring-web-portlet-java"},
          {"reference": "libspring-web-servlet-java"}
        ]
      }
    ]
  },
  "Debian Linux-12": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "12",
        "pkgs": [
          {"reference": "libspring-aop-java"},
          {"reference": "libspring-beans-java"},
          {"reference": "libspring-context-java"},
          {"reference": "libspring-context-support-java"},
          {"reference": "libspring-core-java"},
          {"reference": "libspring-expression-java"},
          {"reference": "libspring-instrument-java"},
          {"reference": "libspring-jdbc-java"},
          {"reference": "libspring-jms-java"},
          {"reference": "libspring-messaging-java"},
          {"reference": "libspring-orm-java"},
          {"reference": "libspring-oxm-java"},
          {"reference": "libspring-test-java"},
          {"reference": "libspring-transaction-java"},
          {"reference": "libspring-web-java"},
          {"reference": "libspring-web-portlet-java"},
          {"reference": "libspring-web-servlet-java"}
        ]
      }
    ]
  },
  "Debian Linux-13": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "13",
        "pkgs": [
          {"reference": "libspring-aop-java"},
          {"reference": "libspring-beans-java"},
          {"reference": "libspring-context-java"},
          {"reference": "libspring-context-support-java"},
          {"reference": "libspring-core-java"},
          {"reference": "libspring-expression-java"},
          {"reference": "libspring-instrument-java"},
          {"reference": "libspring-jdbc-java"},
          {"reference": "libspring-jms-java"},
          {"reference": "libspring-messaging-java"},
          {"reference": "libspring-orm-java"},
          {"reference": "libspring-oxm-java"},
          {"reference": "libspring-test-java"},
          {"reference": "libspring-transaction-java"},
          {"reference": "libspring-web-java"},
          {"reference": "libspring-web-portlet-java"},
          {"reference": "libspring-web-servlet-java"}
        ]
      }
    ]
  },
  "Debian Linux-14": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "14",
        "pkgs": [
          {"reference": "libspring-aop-java"},
          {"reference": "libspring-beans-java"},
          {"reference": "libspring-context-java"},
          {"reference": "libspring-context-support-java"},
          {"reference": "libspring-core-java"},
          {"reference": "libspring-expression-java"},
          {"reference": "libspring-instrument-java"},
          {"reference": "libspring-jdbc-java"},
          {"reference": "libspring-jms-java"},
          {"reference": "libspring-messaging-java"},
          {"reference": "libspring-orm-java"},
          {"reference": "libspring-oxm-java"},
          {"reference": "libspring-test-java"},
          {"reference": "libspring-transaction-java"},
          {"reference": "libspring-web-java"},
          {"reference": "libspring-web-portlet-java"},
          {"reference": "libspring-web-servlet-java"}
        ]
      }
    ]
  },
  "Ubuntu Linux-14.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "14.04",
        "pkgs": [
          {"reference": "libspring-java"}
        ]
      }
    ]
  },
  "Ubuntu Linux-16.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "16.04",
        "pkgs": [
          {"reference": "libspring-java"}
        ]
      }
    ]
  },
  "Ubuntu Linux-18.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "18.04",
        "pkgs": [
          {"reference": "libspring-java"}
        ]
      }
    ]
  },
  "Ubuntu Linux-20.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "20.04",
        "pkgs": [
          {"reference": "libspring-java"}
        ]
      }
    ]
  },
  "Ubuntu Linux-22.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "22.04",
        "pkgs": [
          {"reference": "libspring-java"}
        ]
      }
    ]
  },
  "Ubuntu Linux-24.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "24.04",
        "pkgs": [
          {"reference": "libspring-java"}
        ]
      }
    ]
  },
  "Ubuntu Linux-25.10": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "25.10",
        "pkgs": [
          {"reference": "libspring-java"}
        ]
      }
    ]
  }
};

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');
}