FKIE_CVE-2026-111441

Vulnerability from fkie_nvd - Published: 2026-10-19 03:16 - Updated: 2026-10-19 20:56
Severity
8.1 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Summary
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 。
References
a1a479f7-907b-4ae8-a999-9148cadc9224https://gitcode.com/opengauss/openGauss-server/pull/9380
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://opengauss.org/zh/download/archive/?version=7.0.0%20(LTS)",
          "defaultStatus": "unaffected",
          "platforms": [
            "openEuler Centos"
          ],
          "product": "openGauss-server",
          "vendor": "openGauss-server",
          "versions": [
            {
              "status": "unaffected",
              "version": "7.0.0-LTS"
            }
          ]
        },
        {
          "collectionURL": "https://opengauss.org/zh/download/archive/?version=7.0.0-RC3",
          "defaultStatus": "unaffected",
          "platforms": [
            "openEuler Centos"
          ],
          "product": "openGauss-server",
          "vendor": "openGauss-server",
          "versions": [
            {
              "status": "affected",
              "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"
            }
          ]
        }
      ],
      "source": "a1a479f7-907b-4ae8-a999-9148cadc9224"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "\u5728 openGauss-server \u7684 src/gausskernel/cbb/utils/hll/hll.cpp \u4e2d\uff0c\u5185\u7f6e\u51fd\u6570 HllObjectUnpack() \u5b58\u5728\u957f\u5ea6\u6821\u9a8c\u7f3a\u9677\u3002\u8be5\u51fd\u6570\u4ece\u7528\u6237\u63d0\u4f9b\u7684 packed HLL \u89e3\u6790 lenUsed \u4e0e lenTotal \u540e\uff0c\u4ec5\u68c0\u67e5\u8f93\u5165\u957f\u5ea6\u8db3\u4ee5\u8986\u76d6 HLL_HEAD_SIZE + lenUsed\uff0c\u968f\u540e\u6309 lenTotal \u5206\u914d\u7f13\u51b2\u533a\u3001\u6309 lenUsed \u8c03\u7528 memcpy_s() \u62f7\u8d1d\u8f93\u5165\uff0c\u65e2\u672a\u6821\u9a8c lenTotal \u003e= lenUsed\uff0c\u4e5f\u5c06 memcpy_s() \u76ee\u6807\u5927\u5c0f\u5199\u6210 lenUsed \u800c\u975e\u5b9e\u9645\u5206\u914d\u7684 lenTotal\uff0c\u5bfc\u81f4\u5b89\u5168\u62f7\u8d1d\u65e0\u6cd5\u62e6\u622a\u8d8a\u754c\u5199\u3002hll_in()\u3001hll_print()\u3001hll_cardinality() \u7b49 SQL \u5165\u53e3\u4f1a\u8d70\u540c\u4e00\u89e3\u5305\u8def\u5f84\u3002\u56e0\u6b64\uff0c\u666e\u901a\u6570\u636e\u5e93\u8fde\u63a5\u7528\u6237\u53ea\u9700\u6784\u9020 lenTotal \u5c0f\u4e8e lenUsed \u7684\u7578\u5f62 packed HLL\uff08\u4f8b\u5982\u7ecf ::hll \u8fdb\u5165 hll_in()\uff09\uff0c\u5373\u53ef\u89e6\u53d1\u670d\u52a1\u7aef\u5806\u8d8a\u754c\u5199\uff0c\u5b58\u5728\u5185\u5b58\u7834\u574f\u98ce\u9669\u3002\u6b64\u95ee\u9898\u968f packed HLL \u89e3\u5305\u51fd\u6570 HllObjectUnpack() \u8fdb\u5165\u4ee3\u7801\uff0cv2.1.0 \u8d77\u5373\u5b58\u5728\u3002\u53d7\u5f71\u54cd\u7248\u672c\u5305\u62ec 2.1.0\u30013.0.x\u30013.1.x\u30015.0.x\u30015.1.0\u30016.0.x\uff0c\u4ee5\u53ca 7.0.0-RC1\u30017.0.0-RC2\u30017.0.0-RC3\u3002\u8be5\u95ee\u9898\u5df2\u5728 7.0.0-LTS \u7248\u672c\u4fee\u590d\uff0c\u901a\u8fc7\u5728 HllObjectUnpack() \u4e2d\u8865\u9f50 lenUsed \u003c= lenTotal \u6821\u9a8c\uff0c\u5e76\u5c06 memcpy_s() \u7684\u76ee\u6807\u5927\u5c0f\u6539\u4e3a\u5b9e\u9645\u5206\u914d\u7684 lenTotal\u3002\u4fee\u590d PR \u89c1 https://gitcode.com/opengauss/openGauss-server/pull/9380 \u3002"
    }
  ],
  "id": "CVE-2026-111441",
  "lastModified": "2026-10-19T20:56:36.663",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.2,
        "source": "a1a479f7-907b-4ae8-a999-9148cadc9224",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-111441",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-10-19T17:42:18.566832Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-10-19T03:16:58.543",
  "references": [
    {
      "source": "a1a479f7-907b-4ae8-a999-9148cadc9224",
      "url": "https://gitcode.com/opengauss/openGauss-server/pull/9380"
    }
  ],
  "sourceIdentifier": "a1a479f7-907b-4ae8-a999-9148cadc9224",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-122"
        }
      ],
      "source": "a1a479f7-907b-4ae8-a999-9148cadc9224",
      "type": "Secondary"
    }
  ]
}



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