
以色列安全公司 Lava 在一批没设认证的 GPU 监控端口后面,认出 32 颗被禁对华销售的英伟达 B300,地址指向中国电信的骨干网;这篇把发现方法、数量层级,以及「中国电信的网络」到底指什么逐层拆开。
:9400/metrics,让 Prometheus 这类监控系统来抓。3UUID 还有个副产品:同一张卡换主机名、换地址之后,仍能被对上,观察者由此可以沿着同一个编号追踪它出现在哪里。3/debug/pprof/ 调试接口一起露在外面,攻击者只要并发请求足够多,就能把监控进程的内存吃光、让它崩掉。英伟达给了编号 CVE-2026-47483,严重度 8.2,4.8.2 版本修好。3


"Israeli security firm Lava said it found 32 Nvidia Blackwell Ultra B300 chips through monitoring systems linked to the network of China Telecom, a state-owned telecommunications company."1
"The B300 is one of Nvidia's most powerful data-center chips and is barred from being sold to China by U.S. export controls."1
"It is important to note that IP geolocation is not definitive: a proxy, VPN, or tunnel could relay traffic through an address in China while the hardware itself is physically located elsewhere."2
"The discovery raises questions about the location and supply chain of the reported hardware, although it does not establish that any export-control violation occurred."2
| 已证实 | 依据 |
|---|---|
| Lava 在全球约 2,100 个暴露端点后认出 12,000 多张 GPU,其中地址定位中国的 4,724 张、B300 32 张 | 报告原文与截图2 |
| AS4134 的注册维护方为中国电信 | APNIC 注册信息5 |
| B300 的总 DRAM 带宽在 6,500 GB/s 门槛之上,适用推定拒绝 | BIS 终局规则原文10 |
| CVE-2026-47483 存在、CVSS 8.2、4.8.2 版本修复 | Lava 报告与英伟达公告3 |
| 仍是推断 | 为什么还不能定 |
|---|---|
| 这批机器在中国境内 | 报告自己写明 IP 定位可被代理与隧道干扰2 |
| 这些芯片与某个具体买家、出资方有关 | 报告里没有任何采购、合同或财务信息2 |
| 32 颗就是全部 | 统计只覆盖没设认证、暴露在公网的端点,露不出来的看不到3 |
| 中国相关的总数是 4,724 张 | 两周前同一家公司的数字是 1,967 张,差额成因未说明3 |
nvidia.com
rdap.apnic.net
media.defense.gov
developer.nvidia.com
nvidia.com
federalregister.gov
uk.investing.com
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