{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-111441",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-111441",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-10-19T02:31:01.069Z",
    "updatedAt": "2026-10-19T17:42:42.026Z",
    "importedAt": "2026-10-24T01:57:50.502Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "HLL 反序列化 lenTotal/lenUsed 校验缺失导致堆越界写",
      "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 。",
      "affected": [
        {
          "vendor": "openGauss-server",
          "product": "openGauss-server",
          "collectionURL": "https://opengauss.org/zh/download/archive/?version=7.0.0%20(LTS)",
          "platforms": [
            "openEuler Centos"
          ],
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "7.0.0-LTS",
              "status": "unaffected"
            }
          ]
        },
        {
          "vendor": "openGauss-server",
          "product": "openGauss-server",
          "collectionURL": "https://opengauss.org/zh/download/archive/?version=7.0.0-RC3",
          "platforms": [
            "openEuler Centos"
          ],
          "defaultStatus": "unaffected",
          "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"
            }
          ]
        }
      ]
    }
  }
}