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CVE-2025-37860: sfc: fix NULL dereferences in ef100_process_design_param()

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-04-18 · updated 2026-10-30
• Weakness: CWE-476

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.

Affected products

• Linux kernel: from 6.0 before 6.14.2 — fixed in 6.14.2
• Linux: 6.0 — fixed in 6.15

How to fix

Upgrade to a fixed version: Linux kernel 6.14.2; Linux 6.15. Check the vendor advisory for mitigations.

References

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

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