CVE-2026-27144 (GCVE-0-2026-27144)

Vulnerability from cvelistv5 – Published: 2026-04-08 01:06 – Updated: 2026-04-08 01:06
VLAI?
Title
Miscompilation allows memory corruption via CONVNOP-wrapped array copy in cmd/compile
Summary
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.
Severity ?
No CVSS data available.
CWE
  • CWE-440 - Expected Behavior Violation
Assigner
Go
References
Impacted products
Vendor Product Version
Go toolchain cmd/compile Affected: 0 , < 1.25.9 (semver)
Affected: 1.26.0-0 , < 1.26.2 (semver)
Create a notification for this product.
Credits
Jakub Ciolek - https://ciolek.dev/
Show details on NVD website
To clipboard 

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        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "cmd/compile",
          "product": "cmd/compile",
          "vendor": "Go toolchain",
          "versions": [
            {
              "lessThan": "1.25.9",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "1.26.2",
              "status": "affected",
              "version": "1.26.0-0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Jakub Ciolek - https://ciolek.dev/"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
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        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-440: Expected Behavior Violation",
              "lang": "en"
            }
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-08T01:06:56.908Z",
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
        "shortName": "Go"
      },
      "references": [
        {
          "url": "https://go.dev/cl/763764"
        },
        {
          "url": "https://go.dev/issue/78371"
        },
        {
          "url": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-4867"
        }
      ],
      "title": "Miscompilation allows memory corruption via CONVNOP-wrapped array copy in cmd/compile"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
    "assignerShortName": "Go",
    "cveId": "CVE-2026-27144",
    "datePublished": "2026-04-08T01:06:56.908Z",
    "dateReserved": "2026-02-17T19:57:28.435Z",
    "dateUpdated": "2026-04-08T01:06:56.908Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-27144\",\"sourceIdentifier\":\"security@golang.org\",\"published\":\"2026-04-08T02:16:03.130\",\"lastModified\":\"2026-04-08T21:26:35.910\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://go.dev/cl/763764\",\"source\":\"security@golang.org\"},{\"url\":\"https://go.dev/issue/78371\",\"source\":\"security@golang.org\"},{\"url\":\"https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU\",\"source\":\"security@golang.org\"},{\"url\":\"https://pkg.go.dev/vuln/GO-2026-4867\",\"source\":\"security@golang.org\"}]}}"
  }
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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