Linux Distros Unpatched Vulnerability : CVE-2026-13573

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

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  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 vulnerability was found in llvm llvm-project up to 22.1.6. This affects the function
    llvm::StringMap::insert in the library /lib/IR/ValueSymbolTable.cpp of the component ValueSymbolTable
    Module. The manipulation results in stack-based buffer overflow. Attacking locally is a requirement. The
    exploit has been made public and could be used. The project was informed of the problem early through an
    issue report but has not responded yet. (CVE-2026-13573)

Note that Nessus relies on the presence of the package as reported by the vendor.");
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  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/CVE-2026-13573");
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  script_set_attribute(attribute:"exploit_available", value:"false");
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  script_set_attribute(attribute:"vuln_publication_date", value:"2026/06/29");
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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 = {
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    "package_manager": "dpkg-l",
    "constraints": [
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        "release": "13",
        "pkgs": [
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          {"reference": "libllvm-21-ocaml-dev"},
          {"reference": "libllvm-22-ocaml-dev"},
          {"reference": "libllvm19"},
          {"reference": "libllvm21"},
          {"reference": "libllvm22"},
          {"reference": "libllvmlibc-19-dev"},
          {"reference": "libllvmlibc-21-dev"},
          {"reference": "libllvmlibc-22-dev"},
          {"reference": "libmlir-19"},
          {"reference": "libmlir-19-dev"},
          {"reference": "libmlir-21"},
          {"reference": "libmlir-21-dev"},
          {"reference": "libmlir-22"},
          {"reference": "libmlir-22-dev"},
          {"reference": "liboffload-19"},
          {"reference": "liboffload-19-dev"},
          {"reference": "liboffload-21"},
          {"reference": "liboffload-21-dev"},
          {"reference": "liboffload-22"},
          {"reference": "liboffload-22-dev"},
          {"reference": "libomp-19-dev"},
          {"reference": "libomp-19-doc"},
          {"reference": "libomp-21-dev"},
          {"reference": "libomp-21-doc"},
          {"reference": "libomp-22-dev"},
          {"reference": "libomp-22-doc"},
          {"reference": "libomp5"},
          {"reference": "libpolly-19-dev"},
          {"reference": "libpolly-21-dev"},
          {"reference": "libpolly-22-dev"},
          {"reference": "libunwind-19-dev"},
          {"reference": "libunwind-21-dev"},
          {"reference": "libunwind-22-dev"},
          {"reference": "lld-19"},
          {"reference": "lld-21"},
          {"reference": "lld-22"},
          {"reference": "lldb-19"},
          {"reference": "lldb-21"},
          {"reference": "lldb-22"},
          {"reference": "llvm-19"},
          {"reference": "llvm-19-dev"},
          {"reference": "llvm-19-doc"},
          {"reference": "llvm-19-examples"},
          {"reference": "llvm-19-linker-tools"},
          {"reference": "llvm-19-runtime"},
          {"reference": "llvm-19-tools"},
          {"reference": "llvm-21"},
          {"reference": "llvm-21-dev"},
          {"reference": "llvm-21-doc"},
          {"reference": "llvm-21-examples"},
          {"reference": "llvm-21-linker-tools"},
          {"reference": "llvm-21-runtime"},
          {"reference": "llvm-21-tools"},
          {"reference": "llvm-22"},
          {"reference": "llvm-22-dev"},
          {"reference": "llvm-22-doc"},
          {"reference": "llvm-22-examples"},
          {"reference": "llvm-22-linker-tools"},
          {"reference": "llvm-22-runtime"},
          {"reference": "llvm-22-tools"},
          {"reference": "llvm-libunwind1"},
          {"reference": "mlir-19-tools"},
          {"reference": "mlir-21-tools"},
          {"reference": "mlir-22-tools"},
          {"reference": "python3-clang-19"},
          {"reference": "python3-clang-21"},
          {"reference": "python3-clang-22"},
          {"reference": "python3-lldb-19"},
          {"reference": "python3-lldb-21"},
          {"reference": "python3-lldb-22"}
        ]
      }
    ]
  },
  "Ubuntu Linux-20.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "20.04",
        "pkgs": [
          {"reference": "llvm-toolchain-18"}
        ]
      }
    ]
  },
  "Ubuntu Linux-24.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "24.04",
        "pkgs": [
          {"reference": "bolt-18"},
          {"reference": "clang-18"},
          {"reference": "clang-18-doc"},
          {"reference": "clang-18-examples"},
          {"reference": "clang-format-18"},
          {"reference": "clang-tidy-18"},
          {"reference": "clang-tools-18"},
          {"reference": "clangd-18"},
          {"reference": "flang-18"},
          {"reference": "libbolt-18-dev"},
          {"reference": "libc++-18-dev"},
          {"reference": "libc++-18-dev-wasm32"},
          {"reference": "libc++1-18"},
          {"reference": "libc++abi-18-dev"},
          {"reference": "libc++abi-18-dev-wasm32"},
          {"reference": "libc++abi1-18"},
          {"reference": "libclang-18-dev"},
          {"reference": "libclang-common-18-dev"},
          {"reference": "libclang-cpp18"},
          {"reference": "libclang-cpp18-dev"},
          {"reference": "libclang-rt-18-dev"},
          {"reference": "libclang-rt-18-dev-wasm32"},
          {"reference": "libclang-rt-18-dev-wasm64"},
          {"reference": "libclang1-18"},
          {"reference": "libclc-18"},
          {"reference": "libclc-18-dev"},
          {"reference": "libflang-18-dev"},
          {"reference": "libfuzzer-18-dev"},
          {"reference": "liblld-18"},
          {"reference": "liblld-18-dev"},
          {"reference": "liblldb-18"},
          {"reference": "liblldb-18-dev"},
          {"reference": "libllvm-18-ocaml-dev"},
          {"reference": "libllvm18"},
          {"reference": "libllvmlibc-18-dev"},
          {"reference": "libmlir-18"},
          {"reference": "libmlir-18-dev"},
          {"reference": "libomp-18-dev"},
          {"reference": "libomp-18-doc"},
          {"reference": "libomp5-18"},
          {"reference": "libpolly-18-dev"},
          {"reference": "libunwind-18"},
          {"reference": "libunwind-18-dev"},
          {"reference": "lld-18"},
          {"reference": "lldb-18"},
          {"reference": "llvm-18"},
          {"reference": "llvm-18-dev"},
          {"reference": "llvm-18-doc"},
          {"reference": "llvm-18-examples"},
          {"reference": "llvm-18-linker-tools"},
          {"reference": "llvm-18-runtime"},
          {"reference": "llvm-18-tools"},
          {"reference": "llvm-toolchain-19"},
          {"reference": "mlir-18-tools"},
          {"reference": "python3-clang-18"},
          {"reference": "python3-lldb-18"}
        ]
      }
    ]
  },
  "Ubuntu Linux-25.10": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "25.10",
        "pkgs": [
          {"reference": "bolt-19"},
          {"reference": "clang-19"},
          {"reference": "clang-19-doc"},
          {"reference": "clang-19-examples"},
          {"reference": "clang-format-19"},
          {"reference": "clang-tidy-19"},
          {"reference": "clang-tools-19"},
          {"reference": "clangd-19"},
          {"reference": "flang-19"},
          {"reference": "libbolt-19-dev"},
          {"reference": "libc++-19-dev"},
          {"reference": "libc++-19-dev-wasm32"},
          {"reference": "libc++1-19"},
          {"reference": "libc++abi-19-dev"},
          {"reference": "libc++abi-19-dev-wasm32"},
          {"reference": "libc++abi1-19"},
          {"reference": "libclang-19-dev"},
          {"reference": "libclang-common-19-dev"},
          {"reference": "libclang-cpp19"},
          {"reference": "libclang-cpp19-dev"},
          {"reference": "libclang-rt-19-dev"},
          {"reference": "libclang-rt-19-dev-wasm32"},
          {"reference": "libclang-rt-19-dev-wasm64"},
          {"reference": "libclang1-19"},
          {"reference": "libclc-19"},
          {"reference": "libclc-19-dev"},
          {"reference": "libflang-19-dev"},
          {"reference": "libfuzzer-19-dev"},
          {"reference": "liblld-19"},
          {"reference": "liblld-19-dev"},
          {"reference": "liblldb-19"},
          {"reference": "liblldb-19-dev"},
          {"reference": "libllvm-19-ocaml-dev"},
          {"reference": "libllvm19"},
          {"reference": "libllvmlibc-19-dev"},
          {"reference": "libmlir-19"},
          {"reference": "libmlir-19-dev"},
          {"reference": "libomp-19-dev"},
          {"reference": "libomp-19-doc"},
          {"reference": "libomp5-19"},
          {"reference": "libpolly-19-dev"},
          {"reference": "libunwind-19"},
          {"reference": "libunwind-19-dev"},
          {"reference": "lld-19"},
          {"reference": "lldb-19"},
          {"reference": "llvm-19"},
          {"reference": "llvm-19-dev"},
          {"reference": "llvm-19-doc"},
          {"reference": "llvm-19-examples"},
          {"reference": "llvm-19-linker-tools"},
          {"reference": "llvm-19-runtime"},
          {"reference": "llvm-19-tools"},
          {"reference": "llvm-toolchain-18"},
          {"reference": "llvm-toolchain-21"},
          {"reference": "mlir-19-tools"},
          {"reference": "python3-clang-19"},
          {"reference": "python3-lldb-19"}
        ]
      }
    ]
  },
  "Ubuntu Linux-26.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "26.04",
        "pkgs": [
          {"reference": "bolt-21"},
          {"reference": "clang-21"},
          {"reference": "clang-21-doc"},
          {"reference": "clang-21-examples"},
          {"reference": "clang-format-21"},
          {"reference": "clang-tidy-21"},
          {"reference": "clang-tools-21"},
          {"reference": "clangd-21"},
          {"reference": "flang-21"},
          {"reference": "libbolt-21-dev"},
          {"reference": "libc++-21-dev"},
          {"reference": "libc++-21-dev-wasm32"},
          {"reference": "libc++abi-21-dev"},
          {"reference": "libc++abi-21-dev-wasm32"},
          {"reference": "libclang-21-dev"},
          {"reference": "libclang-common-21-dev"},
          {"reference": "libclang-cpp21"},
          {"reference": "libclang-cpp21-dev"},
          {"reference": "libclang-rt-21-dev"},
          {"reference": "libclang-rt-21-dev-wasm32"},
          {"reference": "libclang-rt-21-dev-wasm64"},
          {"reference": "libclang-rt-21-dev-win"},
          {"reference": "libclang1-21"},
          {"reference": "libclc-21"},
          {"reference": "libclc-21-dev"},
          {"reference": "libflang-21-dev"},
          {"reference": "libfuzzer-21-dev"},
          {"reference": "liblld-21"},
          {"reference": "liblld-21-dev"},
          {"reference": "liblldb-21"},
          {"reference": "liblldb-21-dev"},
          {"reference": "libllvm-21-ocaml-dev"},
          {"reference": "libllvm21"},
          {"reference": "libllvmlibc-21-dev"},
          {"reference": "libmlir-21"},
          {"reference": "libmlir-21-dev"},
          {"reference": "liboffload-21"},
          {"reference": "liboffload-21-dev"},
          {"reference": "libomp-21-dev"},
          {"reference": "libomp-21-doc"},
          {"reference": "libpolly-21-dev"},
          {"reference": "libunwind-21-dev"},
          {"reference": "lld-21"},
          {"reference": "lldb-21"},
          {"reference": "llvm-21"},
          {"reference": "llvm-21-dev"},
          {"reference": "llvm-21-doc"},
          {"reference": "llvm-21-examples"},
          {"reference": "llvm-21-linker-tools"},
          {"reference": "llvm-21-runtime"},
          {"reference": "llvm-21-tools"},
          {"reference": "llvm-toolchain-18"},
          {"reference": "llvm-toolchain-19"},
          {"reference": "llvm-toolchain-22"},
          {"reference": "mlir-21-tools"},
          {"reference": "python3-clang-21"},
          {"reference": "python3-lldb-21"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-10": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "10",
        "pkgs": [
          {"reference": "clang"},
          {"reference": "clang-analyzer"},
          {"reference": "clang-devel"},
          {"reference": "clang-libs"},
          {"reference": "clang-resource-filesystem"},
          {"reference": "clang-tools-extra"},
          {"reference": "compiler-rt"},
          {"reference": "git-clang-format"},
          {"reference": "libomp"},
          {"reference": "libomp-devel"},
          {"reference": "lld"},
          {"reference": "lld-devel"},
          {"reference": "lld-libs"},
          {"reference": "lldb"},
          {"reference": "lldb-devel"},
          {"reference": "llvm"},
          {"reference": "llvm-devel"},
          {"reference": "llvm-doc"},
          {"reference": "llvm-filesystem"},
          {"reference": "llvm-googletest"},
          {"reference": "llvm-libs"},
          {"reference": "llvm-static"},
          {"reference": "llvm-test"},
          {"reference": "llvm-toolset"},
          {"reference": "python3-clang"},
          {"reference": "python3-lit"},
          {"reference": "python3-lldb"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-9": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "9",
        "pkgs": [
          {"reference": "clang"},
          {"reference": "clang-analyzer"},
          {"reference": "clang-devel"},
          {"reference": "clang-libs"},
          {"reference": "clang-resource-filesystem"},
          {"reference": "clang-tools-extra"},
          {"reference": "compiler-rt"},
          {"reference": "git-clang-format"},
          {"reference": "libomp"},
          {"reference": "libomp-devel"},
          {"reference": "lld"},
          {"reference": "lld-devel"},
          {"reference": "lld-libs"},
          {"reference": "lldb"},
          {"reference": "lldb-devel"},
          {"reference": "llvm"},
          {"reference": "llvm-devel"},
          {"reference": "llvm-doc"},
          {"reference": "llvm-filesystem"},
          {"reference": "llvm-googletest"},
          {"reference": "llvm-libs"},
          {"reference": "llvm-static"},
          {"reference": "llvm-test"},
          {"reference": "llvm-toolset"},
          {"reference": "python3-clang"},
          {"reference": "python3-lit"},
          {"reference": "python3-lldb"}
        ]
      }
    ]
  },
  "CentOS Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "clang"},
          {"reference": "clang-analyzer"},
          {"reference": "clang-devel"},
          {"reference": "clang-libs"},
          {"reference": "clang-resource-filesystem"},
          {"reference": "clang-tools-extra"},
          {"reference": "git-clang-format"},
          {"reference": "llvm"},
          {"reference": "llvm-devel"},
          {"reference": "llvm-doc"},
          {"reference": "llvm-googletest"},
          {"reference": "llvm-libs"},
          {"reference": "llvm-static"},
          {"reference": "llvm-test"},
          {"reference": "python3-clang"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "clang"},
          {"reference": "clang-analyzer"},
          {"reference": "clang-devel"},
          {"reference": "clang-libs"},
          {"reference": "clang-resource-filesystem"},
          {"reference": "clang-tools-extra"},
          {"reference": "git-clang-format"},
          {"reference": "llvm"},
          {"reference": "llvm-devel"},
          {"reference": "llvm-doc"},
          {"reference": "llvm-googletest"},
          {"reference": "llvm-libs"},
          {"reference": "llvm-static"},
          {"reference": "llvm-test"},
          {"reference": "python3-clang"}
        ]
      }
    ]
  }
};

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');
}