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Low, CVSS 2.0

orx-pinned-vec has undefined behavior in index_of_ptr with empty slices

GHSA-h5j3-crg5-8jqm

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (orx-pinned-vec 3.21.0), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS 4.0
2.0 · CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P · score source
EPSS
No dated EPSS signal available.
Source description

As published by the source; long descriptions are shortened.

The safe function indexofptr causes undefined behavior when called with an empty slice. The issue occurs in the line ptr.add(slice.len() - 1) which underflows when slice.len() is 0, creating a pointer with a massive offset. According to Rust's safety rules, creating such a pointer causes immediate undefined behavior.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 1 · created ·

    Published from ghsa record GHSA-h5j3-crg5-8jqm

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: GHSA-h5j3-crg5-8jqm

Advisory: orx-pinned-vec has undefined behavior in index_of_ptr with empty slices
IDs: GHSA-h5j3-crg5-8jqm
Record: https://patchnext.com/advisories/ghsa-h5j3-crg5-8jqm (revision 1, source checked 26 Oct 2026, 15:39 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Low (CVSS 2.0)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: orx-pinned-vec 3.21.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- crates.io orx-pinned-vec: affected < 3.21.0; fixed in 3.21.0

## Suggested inspection (read-only)
- crates.io orx-pinned-vec: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on orx-pinned-vec.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-h5j3-crg5-8jqm (GitHub-reviewed advisory GHSA-h5j3-crg5-8jqm lists affected ranges: crates.io orx-pinned-vec >=0 <3.21.0)

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