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Linux Distros Unpatched Vulnerability : CVE-2023-29935

🗓️ 27 Aug 2025 00:00:00Reported by TenableType 
nessus
 nessus🔗 www.tenable.com👁 3 Views

Linux hosts have an unpatched vulnerability in llvm-project commit a0138390 (CVE-2023-29935).

Related
Refs
Code
ReporterTitlePublishedViews
Family
CBLMariner		CVE-2023-29935 affecting package clang16 for versions less than 16.0.0-2
28 Mar 202518:18
–cbl_mariner
CBLMariner		CVE-2023-29935 affecting package rust for versions less than 1.72.0-1
11 Oct 202301:41
–cbl_mariner
Circl		CVE-2023-29935
5 May 202318:25
–circl
CNNVD		LLVM project 安全漏洞
5 May 202300:00
–cnnvd
CVE		CVE-2023-29935
5 May 202300:00
–cve
Cvelist		CVE-2023-29935
5 May 202300:00
–cvelist
Debian CVE		CVE-2023-29935
5 May 202300:00
–debiancve
EUVD		EUVD-2023-33465
3 Oct 202520:07
–euvd
Tenable Nessus		CBL Mariner 2.0 Security Update: clang16 (CVE-2023-29935)
29 Mar 202500:00
–nessus
Microsoft CVE		llvm-project commit a0138390 was discovered to contain an assertion failure at !replacements.count(op) && "operation was already replaced.
28 Mar 202507:00
–mscve
Rows per page
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(256731);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/01/30");

  script_cve_id("CVE-2023-29935");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2023-29935");

  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.

  - llvm-project commit a0138390 was discovered to contain an assertion failure at !replacements.count(op) &&
    operation was already replaced. (CVE-2023-29935)

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-2023-29935");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/CVE-2023-29935");
  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:L/AC:L/PR:N/UI:R/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-2023-29935");

  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:"2023/05/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/08/27");

  script_set_attribute(attribute:"plugin_type", value:"local");
  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:25.04");
  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:"p-cpe:/a:canonical:ubuntu_linux:llvm-toolchain-13");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:llvm-toolchain-14");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:llvm-toolchain-15");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:llvm-toolchain-13");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:llvm-toolchain-14");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:llvm-toolchain-15");
  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) 2025-2026 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/Ubuntu Linux-22.04", "Host/OS/Ubuntu Linux-24.04", "Host/OS/Ubuntu Linux-25.04", "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-12": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "12",
        "pkgs": [
          {"reference": "bolt-15"},
          {"reference": "clang-13"},
          {"reference": "clang-13-doc"},
          {"reference": "clang-13-examples"},
          {"reference": "clang-14"},
          {"reference": "clang-14-doc"},
          {"reference": "clang-14-examples"},
          {"reference": "clang-15"},
          {"reference": "clang-15-doc"},
          {"reference": "clang-15-examples"},
          {"reference": "clang-format-13"},
          {"reference": "clang-format-14"},
          {"reference": "clang-format-15"},
          {"reference": "clang-tidy-13"},
          {"reference": "clang-tidy-14"},
          {"reference": "clang-tidy-15"},
          {"reference": "clang-tools-13"},
          {"reference": "clang-tools-14"},
          {"reference": "clang-tools-15"},
          {"reference": "clangd-13"},
          {"reference": "clangd-14"},
          {"reference": "clangd-15"},
          {"reference": "libbolt-15-dev"},
          {"reference": "libc++-13-dev"},
          {"reference": "libc++-14-dev"},
          {"reference": "libc++-14-dev-wasm32"},
          {"reference": "libc++-15-dev"},
          {"reference": "libc++1-13"},
          {"reference": "libc++1-14"},
          {"reference": "libc++1-15"},
          {"reference": "libc++abi-13-dev"},
          {"reference": "libc++abi-14-dev"},
          {"reference": "libc++abi-14-dev-wasm32"},
          {"reference": "libc++abi-15-dev"},
          {"reference": "libc++abi1-13"},
          {"reference": "libc++abi1-14"},
          {"reference": "libc++abi1-15"},
          {"reference": "libclang-13-dev"},
          {"reference": "libclang-14-dev"},
          {"reference": "libclang-15-dev"},
          {"reference": "libclang-common-13-dev"},
          {"reference": "libclang-common-14-dev"},
          {"reference": "libclang-common-15-dev"},
          {"reference": "libclang-cpp13"},
          {"reference": "libclang-cpp13-dev"},
          {"reference": "libclang-cpp14"},
          {"reference": "libclang-cpp14-dev"},
          {"reference": "libclang-cpp15"},
          {"reference": "libclang-cpp15-dev"},
          {"reference": "libclang-rt-14-dev"},
          {"reference": "libclang-rt-14-dev-wasm32"},
          {"reference": "libclang-rt-14-dev-wasm64"},
          {"reference": "libclang1-13"},
          {"reference": "libclang1-14"},
          {"reference": "libclang1-15"},
          {"reference": "libclc-13"},
          {"reference": "libclc-13-dev"},
          {"reference": "libclc-14"},
          {"reference": "libclc-14-dev"},
          {"reference": "libclc-15"},
          {"reference": "libclc-15-dev"},
          {"reference": "libfuzzer-13-dev"},
          {"reference": "libfuzzer-14-dev"},
          {"reference": "libfuzzer-15-dev"},
          {"reference": "liblld-13"},
          {"reference": "liblld-13-dev"},
          {"reference": "liblld-14"},
          {"reference": "liblld-14-dev"},
          {"reference": "liblld-15"},
          {"reference": "liblld-15-dev"},
          {"reference": "liblldb-13"},
          {"reference": "liblldb-13-dev"},
          {"reference": "liblldb-14"},
          {"reference": "liblldb-14-dev"},
          {"reference": "liblldb-15"},
          {"reference": "liblldb-15-dev"},
          {"reference": "libllvm-13-ocaml-dev"},
          {"reference": "libllvm-14-ocaml-dev"},
          {"reference": "libllvm-15-ocaml-dev"},
          {"reference": "libllvm13"},
          {"reference": "libllvm14"},
          {"reference": "libllvm15"},
          {"reference": "libmlir-13"},
          {"reference": "libmlir-13-dev"},
          {"reference": "libmlir-14"},
          {"reference": "libmlir-14-dev"},
          {"reference": "libmlir-15"},
          {"reference": "libmlir-15-dev"},
          {"reference": "libomp-13-dev"},
          {"reference": "libomp-13-doc"},
          {"reference": "libomp-14-dev"},
          {"reference": "libomp-14-doc"},
          {"reference": "libomp-15-dev"},
          {"reference": "libomp-15-doc"},
          {"reference": "libomp5-13"},
          {"reference": "libomp5-14"},
          {"reference": "libomp5-15"},
          {"reference": "libpolly-14-dev"},
          {"reference": "libunwind-13"},
          {"reference": "libunwind-13-dev"},
          {"reference": "libunwind-14"},
          {"reference": "libunwind-14-dev"},
          {"reference": "libunwind-15"},
          {"reference": "libunwind-15-dev"},
          {"reference": "lld-13"},
          {"reference": "lld-14"},
          {"reference": "lld-15"},
          {"reference": "lldb-13"},
          {"reference": "lldb-14"},
          {"reference": "lldb-15"},
          {"reference": "llvm-13"},
          {"reference": "llvm-13-dev"},
          {"reference": "llvm-13-doc"},
          {"reference": "llvm-13-examples"},
          {"reference": "llvm-13-linker-tools"},
          {"reference": "llvm-13-runtime"},
          {"reference": "llvm-13-tools"},
          {"reference": "llvm-14"},
          {"reference": "llvm-14-dev"},
          {"reference": "llvm-14-doc"},
          {"reference": "llvm-14-examples"},
          {"reference": "llvm-14-linker-tools"},
          {"reference": "llvm-14-runtime"},
          {"reference": "llvm-14-tools"},
          {"reference": "llvm-15"},
          {"reference": "llvm-15-dev"},
          {"reference": "llvm-15-doc"},
          {"reference": "llvm-15-examples"},
          {"reference": "llvm-15-linker-tools"},
          {"reference": "llvm-15-runtime"},
          {"reference": "llvm-15-tools"},
          {"reference": "mlir-13-tools"},
          {"reference": "mlir-14-tools"},
          {"reference": "mlir-15-tools"},
          {"reference": "python3-clang-13"},
          {"reference": "python3-clang-14"},
          {"reference": "python3-clang-15"},
          {"reference": "python3-lldb-13"},
          {"reference": "python3-lldb-14"},
          {"reference": "python3-lldb-15"}
        ]
      }
    ]
  },
  "Debian Linux-11": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "11",
        "pkgs": [
          {"reference": "clang-13"},
          {"reference": "clang-13-doc"},
          {"reference": "clang-13-examples"},
          {"reference": "clang-format-13"},
          {"reference": "clang-tidy-13"},
          {"reference": "clang-tools-13"},
          {"reference": "clangd-13"},
          {"reference": "libc++-13-dev"},
          {"reference": "libc++1-13"},
          {"reference": "libc++abi-13-dev"},
          {"reference": "libc++abi1-13"},
          {"reference": "libclang-13-dev"},
          {"reference": "libclang-common-13-dev"},
          {"reference": "libclang-cpp13"},
          {"reference": "libclang-cpp13-dev"},
          {"reference": "libclang1-13"},
          {"reference": "libclc-13"},
          {"reference": "libclc-13-dev"},
          {"reference": "libfuzzer-13-dev"},
          {"reference": "liblld-13"},
          {"reference": "liblld-13-dev"},
          {"reference": "liblldb-13"},
          {"reference": "liblldb-13-dev"},
          {"reference": "libllvm-13-ocaml-dev"},
          {"reference": "libllvm13"},
          {"reference": "libmlir-13"},
          {"reference": "libmlir-13-dev"},
          {"reference": "libomp-13-dev"},
          {"reference": "libomp-13-doc"},
          {"reference": "libomp5-13"},
          {"reference": "libunwind-13"},
          {"reference": "libunwind-13-dev"},
          {"reference": "lld-13"},
          {"reference": "lldb-13"},
          {"reference": "llvm-13"},
          {"reference": "llvm-13-dev"},
          {"reference": "llvm-13-doc"},
          {"reference": "llvm-13-examples"},
          {"reference": "llvm-13-linker-tools"},
          {"reference": "llvm-13-runtime"},
          {"reference": "llvm-13-tools"},
          {"reference": "mlir-13-tools"},
          {"reference": "python3-clang-13"},
          {"reference": "python3-lldb-13"}
        ]
      }
    ]
  },
  "Ubuntu Linux-22.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "22.04",
        "pkgs": [
          {"reference": "clang-13"},
          {"reference": "clang-13-doc"},
          {"reference": "clang-13-examples"},
          {"reference": "clang-14"},
          {"reference": "clang-14-doc"},
          {"reference": "clang-14-examples"},
          {"reference": "clang-format-13"},
          {"reference": "clang-format-14"},
          {"reference": "clang-tidy-13"},
          {"reference": "clang-tidy-14"},
          {"reference": "clang-tools-13"},
          {"reference": "clang-tools-14"},
          {"reference": "clangd-13"},
          {"reference": "clangd-14"},
          {"reference": "libc++-13-dev"},
          {"reference": "libc++-14-dev"},
          {"reference": "libc++1-13"},
          {"reference": "libc++1-14"},
          {"reference": "libc++abi-13-dev"},
          {"reference": "libc++abi-14-dev"},
          {"reference": "libc++abi1-13"},
          {"reference": "libc++abi1-14"},
          {"reference": "libclang-13-dev"},
          {"reference": "libclang-14-dev"},
          {"reference": "libclang-common-13-dev"},
          {"reference": "libclang-common-14-dev"},
          {"reference": "libclang-cpp13"},
          {"reference": "libclang-cpp13-dev"},
          {"reference": "libclang-cpp14"},
          {"reference": "libclang-cpp14-dev"},
          {"reference": "libclang1-13"},
          {"reference": "libclang1-14"},
          {"reference": "libclc-13"},
          {"reference": "libclc-13-dev"},
          {"reference": "libclc-14"},
          {"reference": "libclc-14-dev"},
          {"reference": "libfuzzer-13-dev"},
          {"reference": "libfuzzer-14-dev"},
          {"reference": "liblld-13"},
          {"reference": "liblld-13-dev"},
          {"reference": "liblld-14"},
          {"reference": "liblld-14-dev"},
          {"reference": "liblldb-13"},
          {"reference": "liblldb-13-dev"},
          {"reference": "liblldb-14"},
          {"reference": "liblldb-14-dev"},
          {"reference": "libllvm-13-ocaml-dev"},
          {"reference": "libllvm-14-ocaml-dev"},
          {"reference": "libllvm13"},
          {"reference": "libllvm14"},
          {"reference": "libmlir-13"},
          {"reference": "libmlir-13-dev"},
          {"reference": "libmlir-14"},
          {"reference": "libmlir-14-dev"},
          {"reference": "libomp-13-dev"},
          {"reference": "libomp-13-doc"},
          {"reference": "libomp-14-dev"},
          {"reference": "libomp-14-doc"},
          {"reference": "libomp5-13"},
          {"reference": "libomp5-14"},
          {"reference": "libunwind-13"},
          {"reference": "libunwind-13-dev"},
          {"reference": "libunwind-14"},
          {"reference": "libunwind-14-dev"},
          {"reference": "lld-13"},
          {"reference": "lld-14"},
          {"reference": "lldb-13"},
          {"reference": "lldb-14"},
          {"reference": "llvm-13"},
          {"reference": "llvm-13-dev"},
          {"reference": "llvm-13-doc"},
          {"reference": "llvm-13-examples"},
          {"reference": "llvm-13-linker-tools"},
          {"reference": "llvm-13-runtime"},
          {"reference": "llvm-13-tools"},
          {"reference": "llvm-14"},
          {"reference": "llvm-14-dev"},
          {"reference": "llvm-14-doc"},
          {"reference": "llvm-14-examples"},
          {"reference": "llvm-14-linker-tools"},
          {"reference": "llvm-14-runtime"},
          {"reference": "llvm-14-tools"},
          {"reference": "llvm-toolchain-15"},
          {"reference": "mlir-13-tools"},
          {"reference": "mlir-14-tools"},
          {"reference": "python3-clang-13"},
          {"reference": "python3-clang-14"},
          {"reference": "python3-lldb-13"},
          {"reference": "python3-lldb-14"}
        ]
      }
    ]
  },
  "Ubuntu Linux-24.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "24.04",
        "pkgs": [
          {"reference": "llvm-toolchain-14"},
          {"reference": "llvm-toolchain-15"}
        ]
      }
    ]
  },
  "Ubuntu Linux-25.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "25.04",
        "pkgs": [
          {"reference": "llvm-toolchain-14"},
          {"reference": "llvm-toolchain-15"}
        ]
      }
    ]
  },
  "Ubuntu Linux-25.10": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "25.10",
        "pkgs": [
          {"reference": "llvm-toolchain-14"}
        ]
      }
    ]
  }
};

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');
}

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30 Jan 2026 00:00Current
6.4Medium risk
Vulners AI Score6.4
CVSS 3.15.5
EPSS0.0004
SSVC
linux vulnerabilityunpatchedllvm projectcve-2023-29935assertion failure
3