CVE-2025-22893: Intel 800 Series Privilege Escalation Flaw

CVE-2025-22893 Overview

CVE-2025-22893 affects the Linux kernel-mode driver for Intel 800 Series Ethernet adapters before version 1.17.2. The flaw stems from insufficient control flow management [CWE-691] in the driver code path. An authenticated local user can leverage this weakness to escalate privileges on affected systems. Intel disclosed the issue through security advisory SA-01296 and released a fixed driver version to remediate the condition.

Critical Impact
Local authenticated attackers can escalate privileges through the Intel 800 Series Ethernet kernel driver, gaining higher-level access to compromised Linux systems.

Affected Products

Intel 800 Series Ethernet Linux kernel-mode driver versions prior to 1.17.2
Linux systems running Intel Ethernet 800 Series controllers (E810 family)
Server and workstation deployments using the vulnerable network driver

Discovery Timeline

2025-08-12 - CVE-2025-22893 published to the National Vulnerability Database
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-22893

Vulnerability Analysis

The vulnerability resides in the Linux kernel-mode driver supporting Intel 800 Series Ethernet controllers. Insufficient control flow management allows execution paths to reach unintended states that break driver security assumptions. Because the code runs in kernel mode, successful exploitation transitions an authenticated local user into a higher privilege context. The attack requires local access and valid credentials, but no user interaction on the target beyond the attacker's own session.

The issue is cataloged under CWE-691: Insufficient Control Flow Management. Weaknesses in this class typically involve missing state validation, improper handling of error paths, or unchecked transitions between driver operations. In kernel drivers, such flaws frequently expose primitives that attackers convert into arbitrary write or execution capabilities.

Root Cause

According to the Intel Security Advisory SA-01296, the driver fails to enforce sufficient control flow constraints during specific operations. The exact code path is not detailed publicly, but the CWE classification points to gaps in state or sequence validation within kernel-mode execution.

Attack Vector

Exploitation requires local access with valid low-privilege credentials. The attacker interacts with the vulnerable driver through legitimate interfaces exposed to user space, then triggers the flawed control flow to obtain elevated privileges. Network-based exploitation is not applicable because the vulnerability is reachable only from the local system context. No public proof-of-concept code is available at this time.

Refer to the Intel Security Advisory SA-01296 for vendor-supplied technical context.

Detection Methods for CVE-2025-22893

Indicators of Compromise

Unexpected privilege transitions from standard user accounts to root on hosts using Intel E810-series network adapters
Kernel log entries referencing anomalous states in the ice driver or related Intel 800 Series driver modules
Loading of unsigned or unexpected kernel modules following user activity against the network driver interface

Detection Strategies

Inventory Linux hosts to identify systems loading Intel 800 Series Ethernet drivers below version 1.17.2
Monitor for local processes performing unusual ioctl or netlink operations against network driver interfaces
Correlate authentication events with subsequent privilege changes to detect suspicious escalation patterns

Monitoring Recommendations

Enable Linux audit rules covering kernel module loads, driver interactions, and setuid transitions
Collect and centralize dmesg and journalctl output for kernel-mode driver anomalies
Alert on new root-owned processes spawned from user sessions on systems with vulnerable driver versions

How to Mitigate CVE-2025-22893

Immediate Actions Required

Update the Intel 800 Series Ethernet Linux kernel-mode driver to version 1.17.2 or later on all affected hosts
Restrict local access to systems running vulnerable driver versions until patches are applied
Audit user accounts with local shell access to confirm they are required and monitored

Patch Information

Intel released driver version 1.17.2 to remediate CVE-2025-22893. Administrators should obtain the updated driver package directly from Intel's download portal or through their Linux distribution channels. Full remediation details are published in Intel Security Advisory SA-01296. Reboot the host or reload the driver module after installation to activate the fix.

Workarounds

Limit shell and console access to trusted administrators until patched driver versions are deployed
Enforce least-privilege policies and remove unnecessary local accounts on affected systems
Apply kernel lockdown or module signing policies to reduce the impact of unauthorized driver interactions

bash

# Verify current Intel 800 Series driver version and confirm the patched build is loaded
modinfo ice | grep -E '^version:'
# Expected output after patching: version: 1.17.2 or later