fix: Add input validation to model load #404
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mattwittwer
changed the title
mattwittwer
changed the title
yinggeh
reviewed
Jul 18, 2025
yinggeh
approved these changes
Jul 21, 2025
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Pull Request Overview
This PR improves the security and reliability of the Python backend stub launcher by replacing shell-based command execution with direct process execution and adding input validation. The changes eliminate shell injection vulnerabilities and add safeguards against malicious input.
- Replaces
bash -cshell execution with directexecv/execvecalls - Adds input validation for model names and shared memory region names
- Implements custom environment handling for Python virtual environments
Reviewed Changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated 6 comments.
| File | Description |
|---|---|
| src/stub_launcher.cc | Refactored stub process launching to use direct execution instead of shell commands, added input validation |
| src/pb_utils.h | Added utility function declarations for input validation and environment handling |
| src/pb_utils.cc | Implemented input validation and environment parsing utilities |
kthui
approved these changes
Aug 12, 2025
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What does the PR do?
Simplify the model load command by invoking the python backend stub without shell interpretation. Additionally add checks for invalid characters in provided model names
Checklist
<commit_type>: <Title>Commit Type:
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Related PRs:
Tests for these changes have been added here: triton-inference-server/server#8276
Where should the reviewer start?
The majority of the changes are in the src/stub_launcher.cc
Review the updated flow for building the model load command.
Test plan:
Added testing to: triton-inference-server/server#8276
31707450
Caveats:
Background
Related Issues: (use one of the action keywords Closes / Fixes / Resolves / Relates to)