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Response snapshot Oct 27, 2026, 06:57 UTC

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VulnerabilityCVE-2026-111441

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...

在 openGauss-server 的 src/gausskernel/cbb/utils/hll/hll.

At a glance

Exploited
Not known
Severity
8.1 High (CVSS 3.1)
Chance of exploitation
0.4% in the next 30 days
Sources
1 source

What to do

Check the vendor advisory for affected versions and fixes.

Read NVD CVE-2026-111441 (opens a new tab)

What happened

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 。

Scores and how they were measured

CVSS base severity

8.1

Version 3.1As of

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Measurement source (opens a new tab)

How bad it is if exploited. Not a prediction of exploitation or proof you are exposed.

EPSS probability

0.4%

Scored Percentile 34.5%

Model and measurement source (opens a new tab)

A model's estimate of exploitation in the next 30 days, not certainty or your own risk.

Sources

  1. Primary source

    NVD CVE-2026-111441 (opens a new tab)

    NVD record: description, CVSS (the CNA score is preferred), affected products, and publication date. Not evidence of exploitation.

    Published Checked

  2. Primary source

    NVD CVE API 2.0 (opens a new tab)

    The NVD API page that supplied this CVE record.

    Published Date not suppliedChecked

  3. Primary source

    FIRST measured EPSS score (opens a new tab)

    Measured EPSS probability and percentile for CVE-2026-111441, scored 2026-10-26. This is a model estimate, not proof of exposure.

    Published Checked

Cite this record

For factual claims, cite the primary sources above; cite KEVWire for its compilation, dates, and classifications.

APA

KEVWire. (2026, October 19). 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... (CVE-2026-111441). https://kevwire.com/record/CVE-2026-111441

MLA

"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... (CVE-2026-111441)." KEVWire, 19 Oct. 2026, kevwire.com/record/CVE-2026-111441.

Chicago

KEVWire. "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... (CVE-2026-111441)." Last modified October 19, 2026. https://kevwire.com/record/CVE-2026-111441.

Evidence summary (plain text)

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... (Oct 19, 2026).
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 。
CVSS 8.1 (version 3.1; evidence as of Oct 19, 2026; https://nvd.nist.gov/vuln/detail/CVE-2026-111441).
EPSS 0.4% for the following 30 days, scored Oct 26, 2026 (https://api.first.org/data/v1/epss?cve=CVE-2026-111441&date=2026-10-26).
Sources:
NVD CVE-2026-111441: https://nvd.nist.gov/vuln/detail/CVE-2026-111441
NVD CVE API 2.0: https://services.nvd.nist.gov/rest/json/cves/2.0?pubStartDate=2026-10-12T13:35:55.142Z&pubEndDate=2026-10-26T13:35:55.142Z&resultsPerPage=500&startIndex=5000
FIRST measured EPSS score: https://api.first.org/data/v1/epss?cve=CVE-2026-111441&date=2026-10-26
Record ID: CVE-2026-111441.
Record origin: Ingested record.
AI evidence: Not assessed.
Known exploitation: Not assessed.
Zero-day status: Not assessed. KEV membership alone does not establish zero-day status.
About this data

This record was ingested from a data source. Retrieved: Oct 27, 2026, 01:40 UTC. Ingestion is not an independent editorial investigation.

NVD status: Deferred. Publication in the NVD is not evidence of exploitation.

A CISA KEV listing documents known exploitation, not necessarily a zero-day; absence from the catalog does not prove a vulnerability has never been exploited.

Technology tags indicate possible relevance, not verified exposure. Confirm the affected product, version, and configuration against your own inventory; KEVWire does not scan your systems.

A personal reading checklist on this device, not verified remediation.

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