{"id":"CVE-2026-111441","revision":null,"records":[{"revision":"655c57171fe04836b8678cd4902f7b84","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-111441","aliases":[],"title":"HLL 反序列化 lenTotal/lenUsed 校验缺失导致堆越界写","description":"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 。","state":0,"publishedAt":"2026-10-19T02:31:01.069+00:00","modifiedAt":"2026-10-19T17:42:42.026+00:00","affected":[{"ecosystem":"https://opengauss.org/zh/download/archive/?version=7.0.0%20(LTS)","name":"openGauss-server","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"openGauss-server\",\n                    \"product\": \"openGauss-server\",\n                    \"platforms\": [\n                        \"openEuler Centos\"\n                    ],\n                    \"collectionURL\": \"https://opengauss.org/zh/download/archive/?version=7.0.0%20(LTS)\",\n                    \"versions\": [\n                        {\n                            \"status\": \"unaffected\",\n                            \"version\": \"7.0.0-LTS\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"},{"ecosystem":"https://opengauss.org/zh/download/archive/?version=7.0.0-RC3","name":"openGauss-server","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"openGauss-server\",\n                    \"product\": \"openGauss-server\",\n                    \"platforms\": [\n                        \"openEuler Centos\"\n                    ],\n                    \"collectionURL\": \"https://opengauss.org/zh/download/archive/?version=7.0.0-RC3\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"7.0.0-RC1, 7.0.0-RC2 7.0.0-RC3\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"2.1.0\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"3.0.0-3.0.6\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"3.1.0\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"5.0.0-5.0.5\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"6.0.0-6.0.6\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","score":8.1,"severity":"HIGH"}],"references":["https://gitcode.com/opengauss/openGauss-server/pull/9380"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111441","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-111441","identifiers":["CVE-2026-111441"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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