data/osv/GO-2026-4867.json

{
  "schema_version": "1.3.1",
  "id": "GO-2026-4867",
  "modified": "0001-01-01T00:00:00Z",
  "published": "0001-01-01T00:00:00Z",
  "aliases": [
    "CVE-2026-27144"
  ],
  "summary": "Miscompilation allows memory corruption via CONVNOP-wrapped array copy in cmd/compile",
  "details": "The compiler is meant to unwrap pointers which are the operands of a memory move; a no-op interface conversion prevented the compiler from making the correct determination about non-overlapping moves, potentially leading to memory corruption at runtime.",
  "affected": [
    {
      "package": {
        "name": "toolchain",
        "ecosystem": "Go"
      },
      "ranges": [
        {
          "type": "SEMVER",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.25.9"
            },
            {
              "introduced": "1.26.0-0"
            },
            {
              "fixed": "1.26.2"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "imports": [
          {
            "path": "cmd/compile"
          }
        ]
      }
    }
  ],
  "references": [
    {
      "type": "FIX",
      "url": "https://go.dev/cl/763764"
    },
    {
      "type": "REPORT",
      "url": "https://go.dev/issue/78371"
    },
    {
      "type": "WEB",
      "url": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU"
    }
  ],
  "credits": [
    {
      "name": "Jakub Ciolek - https://ciolek.dev/"
    }
  ],
  "database_specific": {
    "url": "https://pkg.go.dev/vuln/GO-2026-4867",
    "review_status": "REVIEWED"
  }
}