scsi: lpfc: Handle mailbox timeouts in lpfc_get_sfp_info
CVE-2024-46842 · published 27 Sept 2024
How serious is it
- Severity: high, CVSS score 7.8 out of 10.
- No exploit prediction (EPSS) score yet.
- Not on the CISA list of exploited vulnerabilities.
- No public exploit in Exploit-DB.
Is your app affected by CVE-2024-46842?
Paste this prompt into Claude Code, Cursor or any AI coding tool: it runs a free Shippable scan of your project and fixes what it finds. Built with Lovable, Bolt or v0? Scan your live app. Or upload your package file.
Who is affected
- Linux Linux: 479b0917e4477f49df2e3be454aac3cfa5dec171 to < c6d8cce685d6088d795b29a0f47e6fd04548fd64, 479b0917e4477f49df2e3be454aac3cfa5dec171 to < bba47fe3b038cca3d3ebd799665ce69d6d273b58, 479b0917e4477f49df2e3be454aac3cfa5dec171 to < ede596b1434b57c0b3fd5c02b326efe5c54f6e48
- Linux Linux: 6.2
How to check
- Find out whether you run the affected product and which version, then compare it with the versions above.
How to fix
Copies a prompt for Claude Code, Cursor or Codex that asks it to check whether you run this product.
- Apply the vendor's update or mitigation from the references below. If there is none yet, limit exposure of the affected service until there is.
- If a vulnerable version was live, check your logs and rotate the secrets that server could read.
The advisory
In the Linux kernel, the following vulnerability has been resolved:
scsi: lpfc: Handle mailbox timeouts in lpfc_get_sfp_info
The MBX_TIMEOUT return code is not handled in lpfc_get_sfp_info and the
routine unconditionally frees submitted mailbox commands regardless of
return status. The issue is that for MBX_TIMEOUT cases, when firmware
returns SFP information at a later time, that same mailbox memory region
references previously freed memory in its cmpl routine.
Fix by adding checks for the MBX_TIMEOUT return code. During mailbox
resource cleanup, check the mbox flag to make sure that the wait did not
timeout. If the MBOX_WAKE flag is not set, then do not free the resources
because it will be freed when firmware completes the mailbox at a later
time in its cmpl routine.
Also, increase the timeout from 30 to 60 seconds to accommodate boot
scripts requiring longer timeouts.
Check your whole app
Dependencies are only half of it. Free and read-only: before you push, run npx shippable-dev scan localhost:3000 in your project folder, no account needed. For your live app, you prove it's yours with a one-line tag first.
References
- git.kernel.org/stable/c/c6d8cce685d6088d795b29a0f47e6fd04548fd64
- git.kernel.org/stable/c/bba47fe3b038cca3d3ebd799665ce69d6d273b58
- git.kernel.org/stable/c/ede596b1434b57c0b3fd5c02b326efe5c54f6e48
Merged from CVE List. Last updated 25 Oct 2026. All vulnerabilities · RSS · JSON