AIKIDO-2026-560967
numo-narray-alt is vulnerable to Stack-based Buffer Overflow
65
Medium Risk
This Affects:
numo-narray-altTL;DR
The formatting path for Numo::RObject arrays writes each element's to_s output into a fixed 48-byte stack buffer using sprintf. When an element's string representation exceeds 47 bytes, the write runs past the end of the buffer and corrupts the stack. Formatting or inspecting an RObject array whose elements have long or externally influenced string representations therefore triggers a stack-based buffer overflow. The fix builds the element string without a fixed-size stack buffer.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you format or inspect Numo::RObject arrays whose elements can produce long string representations.
Background info
numo-narray-alt is vulnerable to Stack-based Buffer Overflow in versions 0.9.3 - 0.10.6 and 0.11.0 - 0.11.1.
How to fix this
Upgrade the numo-narray-alt library to the patch version.
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