AIKIDO-2026-188965
ash is vulnerable to Integer Overflow or Wraparound
59
Medium Risk
This Affects:
ashTL;DR
Ash.Vector.new/1 writes the element count into a 16-bit unsigned header without checking that the list length fits. Lists longer than 65,535 elements truncate the stored dimension and corrupt the encoded vector. Every later read of the corrupted value raises a MatchError, leading to a persistent denial of service for that record. The fix rejects vectors whose dimension exceeds the 65,535 element limit.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you accept externally supplied vector values through Ash.Vector.
Background info
ash is vulnerable to Integer Overflow or Wraparound in versions 2.14.13 - 3.32.1.
How to fix this
Upgrade the ash library to the patch version.
Links
GitHub Release
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