CVE-2025-38526 ice: add NULL check in eswitch lag check
A missing NULL check in the Linux kernel ice driver can cause a crash when handling LAG events, leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-38526?
CVE-2025-38526 is a high-severity vulnerability in Linux kernel, published on 16 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-476
Which versions are affected by CVE-2025-38526?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2025-38526?
Apply the vendor's patch.
Is CVE-2025-38526 being exploited?
There is no known exploitation of CVE-2025-38526 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-66347, BELL-CVE-2025-38526, DEBIAN-CVE-2025-38526, GHSA-f2wc-6g38-9vmc, ROOT-OS-DEBIAN-13-CVE-2025-38526, ROOT-OS-UBUNTU-2404-CVE-2025-38526 and 1 more.