CVE-2025-39970 i40e: fix input validation logic for action_meta
A missing input validation check in the i40e network driver allows an out-of-bounds dereference, potentially causing a kernel crash.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-39970?
CVE-2025-39970 is a high-severity vulnerability in Linux, published on 15 Oct 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
i40e: fix input validation logic for action_meta
Fix condition to check 'greater or equal' to prevent OOB dereference.
Which versions are affected by CVE-2025-39970?
How do I fix CVE-2025-39970?
Apply the vendor's patch.
Is CVE-2025-39970 being exploited?
There is no known exploitation of CVE-2025-39970 in the wild and no public exploit code.
Sources
Also known as AZL-68471, BELL-CVE-2025-39970, DEBIAN-CVE-2025-39970, GHSA-wvv8-jpfv-h23m, ROOT-OS-DEBIAN-11-CVE-2025-39970, ROOT-OS-DEBIAN-12-CVE-2025-39970 and 3 more.