CVE-2026-111441
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
HLL 反序列化 lenTotal/lenUsed 校验缺失导致堆越界写
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 。
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
openGauss-server
- Vendor
- openGauss-server
- Product
- openGauss-server
- Platforms
- openEuler Centos
- Default status
unaffected- Package collection
- https://opengauss.org/zh/download/archive/?version=7.0.0%20(LTS)
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 7.0.0-LTS | unaffected | Unavailable | Unavailable | Unavailable | None listed |
openGauss-server
- Vendor
- openGauss-server
- Product
- openGauss-server
- Platforms
- openEuler Centos
- Default status
unaffected- Package collection
- https://opengauss.org/zh/download/archive/?version=7.0.0-RC3
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 7.0.0-RC1, 7.0.0-RC2 7.0.0-RC3 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 2.1.0 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 3.0.0-3.0.6 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 3.1.0 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 5.0.0-5.0.5 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 6.0.0-6.0.6 | affected | Unavailable | Unavailable | Unavailable | None listed |