Integer underflow in Linux kernel intel i40e driver

1) Integer underflow

EUVDB-ID: #VU112322

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-38200

CWE-ID: CWE-191 - Integer underflow

Exploit availability: No

Description

The vulnerability allows a local user to execute arbitrary code.

The vulnerability exists due to integer underflow within the i40e_pf_reset() function in drivers/net/ethernet/intel/i40e/i40e_common.c. A local user can execute arbitrary code.

Mitigation

Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:*:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/015bac5daca978448f2671478c553ce1f300c21e
https://git.kernel.org/stable/c/2a1f4f2e36442a9bdf771acf6ee86f3cf876e5ca
https://git.kernel.org/stable/c/3502dd42f178dae9d54696013386bb52b4f2e655
https://git.kernel.org/stable/c/5e75c9082987479e647c75ec8fdf18fa68263c42
https://git.kernel.org/stable/c/872607632c658d3739e4e7889e4f3c419ae2c193
https://git.kernel.org/stable/c/8cde755f56163281ec2c46b4ae8b61f532758a6f
https://git.kernel.org/stable/c/d88a1e8f024ba26e19350958fecbf771a9960352
https://git.kernel.org/stable/c/fecb2fc3fc10c95724407cc45ea35af4a65cdde2

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.