CVE-2025-38200 i40e: fix MMIO write access to an invalid page in i40e_clear_hw
An integer underflow in the i40e driver allows MMIO writes to invalid pages, potentially causing a system crash or denial of service.
- 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-2025-38200?
CVE-2025-38200 is a medium-severity vulnerability in Debian Debian Linux, published on 4 Jul 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 MMIO write access to an invalid page in i40e_clear_hw
When the device sends a specific input, an integer underflow can occur, leading to MMIO write access to an invalid page.
Prevent the integer underflow by changing the type of related variables.
Weakness: CWE-191
Which versions are affected by CVE-2025-38200?
It affects 2 products.
Products include Debian Debian Linux, Linux kernel.
How do I fix CVE-2025-38200?
Apply the vendor's patch.
Is CVE-2025-38200 being exploited?
There is no known exploitation of CVE-2025-38200 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as AZL-64713, BELL-CVE-2025-38200, DEBIAN-CVE-2025-38200, GHSA-6w6g-h475-cx55, ROOT-OS-DEBIAN-11-CVE-2025-38200, ROOT-OS-DEBIAN-12-CVE-2025-38200 and 3 more.