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Critical

Improper handling of non-optional LDFLAGS in go command with cgo in cmd/go

Type: advisorySources: OSV

The go command may execute arbitrary code at build time when using cgo. This may occur when running "go get" on a malicious module, or when running any other command which builds untrusted code. This is can by triggered by linker flags, specified via a "#cgo LDFLAGS" directive. The arguments for a number of flags which are non-optional are incorrectly considered optional, allowing disallowed flags to be smuggled through the LDFLAGS sanitization. This affects usage of both the gc and gccgo compilers.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2023-29404
Confirmed fixed CVEs
Not specified
Updated in this feed
3 Nov 2026, 11:29 UTC · Revision 1

Source evidence

Improper handling of non-optional LDFLAGS in go command with cgo in cmd/go

core-osv · Original source

Published 8 Jun 2023, 20:19 UTC

The go command may execute arbitrary code at build time when using cgo. This may occur when running "go get" on a malicious module, or when running any other command which builds untrusted code. This is can by triggered by linker flags, specified via a "#cgo LDFLAGS" directive. The arguments for a number of flags which are non-optional are incorrectly considered optional, allowing disallowed flags to be smuggled through the LDFLAGS sanitization. This affects usage of both the gc and gccgo compilers.

osv:CVE-2023-29404
Complete source record
{
  "id": "92d2c7704c12beca358adcddce3a24af4ed44080fb522f323d970782658ae704",
  "url": "https://osv.dev/vulnerability/CVE-2023-29404",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Improper handling of non-optional LDFLAGS in go command with cgo in cmd/go",
    "summary": "The go command may execute arbitrary code at build time when using cgo. This may occur when running \"go get\" on a malicious module, or when running any other command which builds untrusted code. This is can by triggered by linker flags, specified via a \"#cgo LDFLAGS\" directive. The arguments for a number of flags which are non-optional are incorrectly considered optional, allowing disallowed flags to be smuggled through the LDFLAGS sanitization. This affects usage of both the gc and gccgo compilers.",
    "evidence": "osv:CVE-2023-29404",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2023-29404",
      "aliases": [
        "BIT-golang-2023-29404",
        "CVE-2023-29404",
        "GO-2023-1841"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/golang/go",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
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                {
                  "fixed": "7fe60b5df764f5a16a2c40e4412b5ed60f709192"
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                {
                  "fixed": "e827d41c0a2ea392c117a790cdfed0022e419424"
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              "database_specific": {
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                    "cpe": "cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*",
                    "range": [
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                        "introduced": "0"
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                    "source": "CPE_RANGE"
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                  {
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                    "range": [
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                        "introduced": "1.20.0"
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                    "source": "CPE_RANGE"
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-29404.json"
          }
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      ],
      "modified": "2026-10-28T02:30:28.190664461Z",
      "provider": "osv",
      "references": [
        "https://go.dev/cl/501225",
        "https://go.dev/issue/60305",
        "https://groups.google.com/g/golang-announce/c/q5135a9d924/m/j0ZoAJOHAwAJ",
        "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NZ2O6YCO2IZMZJELQGZYR2WAUNEDLYV6/",
        "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XBS3IIK6ADV24C5ULQU55QLT2UE762ZX/",
        "https://pkg.go.dev",
        "https://pkg.go.dev/vuln/GO-2023-1841",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/29xxx/CVE-2023-29404.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-29404",
        "https://security.gentoo.org/glsa/202311-09",
        "https://security.netapp.com/advisory/ntap-20241115-0009/"
      ],
      "provider_metadata": {
        "cna_assigner": "Go",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
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                  },
                  {
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                  }
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                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
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        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/29xxx/CVE-2023-29404.json"
      }
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    "related_cves": [
      {
        "value": "CVE-2023-29404",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 494953,
  "published_at": "2023-06-08T20:19:17.548+00:00"
}