CVE-2026-111441

{
  "id": "CVE-2026-111441",
  "sourceIdentifier": "a1a479f7-907b-4ae8-a999-9148cadc9224",
  "published": "2026-10-19T03:16:58.543",
  "lastModified": "2026-10-19T20:56:36.663",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "在 openGauss-server 的 src/gausskernel/cbb/utils/hll/hll.cpp 中，内置函数 HllObjectUnpack() 存在长度校验缺陷。该函数从用户提供的 packed HLL 解析 lenUsed 与 lenTotal 后，仅检查输入长度足以覆盖 HLL_HEAD_SIZE + lenUsed，随后按 lenTotal 分配缓冲区、按 lenUsed 调用 memcpy_s() 拷贝输入，既未校验 lenTotal >= lenUsed，也将 memcpy_s() 目标大小写成 lenUsed 而非实际分配的 lenTotal，导致安全拷贝无法拦截越界写。hll_in()、hll_print()、hll_cardinality() 等 SQL 入口会走同一解包路径。因此，普通数据库连接用户只需构造 lenTotal 小于 lenUsed 的畸形 packed HLL（例如经 ::hll 进入 hll_in()），即可触发服务端堆越界写，存在内存破坏风险。此问题随 packed HLL 解包函数 HllObjectUnpack() 进入代码，v2.1.0 起即存在。受影响版本包括 2.1.0、3.0.x、3.1.x、5.0.x、5.1.0、6.0.x，以及 7.0.0-RC1、7.0.0-RC2、7.0.0-RC3。该问题已在 7.0.0-LTS 版本修复，通过在 HllObjectUnpack() 中补齐 lenUsed <= lenTotal 校验，并将 memcpy_s() 的目标大小改为实际分配的 lenTotal。修复 PR 见 https://gitcode.com/opengauss/openGauss-server/pull/9380 。"
    }
  ],
  "affected": [
    {
      "source": "a1a479f7-907b-4ae8-a999-9148cadc9224",
      "affectedData": [
        {
          "vendor": "openGauss-server",
          "product": "openGauss-server",
          "defaultStatus": "unaffected",
          "collectionURL": "https://opengauss.org/zh/download/archive/?version=7.0.0%20(LTS)",
          "platforms": [
            "openEuler Centos"
          ],
          "versions": [
            {
              "version": "7.0.0-LTS",
              "status": "unaffected"
            }
          ]
        },
        {
          "vendor": "openGauss-server",
          "product": "openGauss-server",
          "defaultStatus": "unaffected",
          "collectionURL": "https://opengauss.org/zh/download/archive/?version=7.0.0-RC3",
          "platforms": [
            "openEuler Centos"
          ],
          "versions": [
            {
              "version": "7.0.0-RC1, 7.0.0-RC2 7.0.0-RC3",
              "status": "affected"
            },
            {
              "version": "2.1.0",
              "status": "affected"
            },
            {
              "version": "3.0.0-3.0.6",
              "status": "affected"
            },
            {
              "version": "3.1.0",
              "status": "affected"
            },
            {
              "version": "5.0.0-5.0.5",
              "status": "affected"
            },
            {
              "version": "6.0.0-6.0.6",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "a1a479f7-907b-4ae8-a999-9148cadc9224",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
          "baseScore": 8.1,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.2
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-10-19T17:42:18.566832Z",
          "id": "CVE-2026-111441",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "a1a479f7-907b-4ae8-a999-9148cadc9224",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-122"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://gitcode.com/opengauss/openGauss-server/pull/9380",
      "source": "a1a479f7-907b-4ae8-a999-9148cadc9224"
    }
  ]
}