What’s Vulnerable › Vulnerabilities

CVE-2025-38526: ice: add NULL check in eswitch lag check

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-08-16 · updated 2026-10-15
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: ice: add NULL check in eswitch lag check The function ice_lag_is_switchdev_running() is being called from outside of the LAG event handler code. This results in the lag->upper_netdev being NULL sometimes. To avoid a NULL-pointer dereference, there needs to be a check before it is dereferenced.

Affected products

• Linux kernel: from 6.6.1 before 6.6.100; from 6.7 before 6.12.40; from 6.13 before 6.15.8; 6.6, 6.6-rc6, 6.6-rc7, 6.16-rc1, 6.16-rc2, 6.16-rc3 (+3) — fixed in 6.12.40, 6.15.8, 6.6.100

How to fix

Upgrade to a fixed version: Linux kernel 6.12.40, 6.15.8, 6.6.100. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/245917d3c5ed7c6ae720302b64eac5c6f0c85177
• https://git.kernel.org/stable/c/27591d926191e42b2332e4bad3bcd3a49def393b
• https://git.kernel.org/stable/c/3ce58b01ada408b372f15b7c992ed0519840e3cf
• https://git.kernel.org/stable/c/5a5d64f0eec82076b2c09fee2195d640cfbe3379

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