Introduction
Privilege escalation on an enterprise Linux server can let an attacker bypass security controls and gain root access, which puts data center operations and cloud workloads at risk. CVE-2025-24486, disclosed recently, is a significant flaw of this kind in Intel's 700 Series Ethernet Linux drivers. Those drivers are widely deployed in critical infrastructure and business environments.
Intel is a leading global manufacturer of networking and compute hardware, and its 700 Series Ethernet controllers run in a substantial share of enterprise servers, storage appliances, and cloud platforms. The vulnerability sits in the i40e Linux kernel driver, a core component of many production environments.
Technical Information
CVE-2025-24486 is a privilege escalation vulnerability caused by improper input validation (CWE-20) in the Linux kernel-mode driver (i40e) for Intel 700 Series Ethernet controllers. It affects driver versions prior to 2.28.5. When the driver processes certain network-related data or configuration parameters, it does not sufficiently validate the format, size, or content of that input. An authenticated local user can supply specially crafted input that triggers memory corruption or unintended control flow inside the kernel driver. The attacker may then escalate privileges, possibly to root-level access on the system.
The vulnerability is specific to Linux systems running the affected Intel Ethernet hardware and driver versions. No public code snippet or exploit is available for this issue. The root cause is incomplete validation of user-supplied data in the driver, a pattern that recurs across kernel-mode vulnerabilities.
Patch Information
Intel has released version 2.28.5 of the 700 Series Ethernet Linux driver to fix CVE-2025-24486. The update includes:
- Stronger input validation to block privilege escalation attempts
- Improved control flow management
- Fixes for uncontrolled resource consumption
All users of Intel 700 Series Ethernet hardware on Linux must upgrade to version 2.28.5 or later. The update is available from Intel's official advisory and download channels.
Reference: https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01335.html
Affected Systems and Versions
- Intel 700 Series Ethernet controllers (including I710, X710, XL710, XXV710, V710, X722)
- Linux systems using the i40e kernel-mode driver
- Affected driver versions: All versions prior to 2.28.5
- Vulnerable configurations: Any Linux system with the above hardware and a driver version below 2.28.5
Vendor Security History
Intel has fixed privilege escalation vulnerabilities in its Ethernet driver products before, in advisories INTEL-SA-01293 and INTEL-SA-01295. The company generally ships timely patches and detailed technical documentation. Repeated input validation issues in this product area suggest that complex kernel-mode drivers remain hard to secure, though Intel's response shows a mature vulnerability management process.
