CVE-2025-22836
📋 TL;DR
An integer overflow vulnerability in Intel 800 Series Ethernet kernel-mode drivers allows authenticated local users to potentially escalate privileges. This affects Linux systems using vulnerable Intel Ethernet drivers. Attackers could gain root access on compromised systems.
💻 Affected Systems
- Intel 800 Series Ethernet Controllers
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with root privileges, allowing complete control over the affected system, data theft, and lateral movement.
Likely Case
Local privilege escalation from a standard user account to root, enabling installation of persistent malware or credential harvesting.
If Mitigated
Limited impact if proper access controls restrict local user accounts and kernel hardening measures are implemented.
🎯 Exploit Status
Requires authenticated local access. Exploitation involves triggering integer overflow in kernel-space driver.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.17.2 or later
Vendor Advisory: https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01296.html
Restart Required: Yes
Instructions:
1. Download Intel Ethernet driver version 1.17.2 or later from Intel's website. 2. Stop network services. 3. Unload current driver module. 4. Install updated driver. 5. Reboot system. 6. Verify driver version.
🔧 Temporary Workarounds
Restrict Local User Access
linuxLimit local user accounts to only essential personnel to reduce attack surface.
Disable Vulnerable Driver Module
linuxBlacklist or prevent loading of the vulnerable Intel Ethernet driver if alternative networking is available.
echo 'blacklist igb' >> /etc/modprobe.d/blacklist.conf
update-initramfs -u
🧯 If You Can't Patch
- Implement strict access controls to limit local user accounts and monitor for suspicious privilege escalation attempts.
- Deploy kernel hardening measures like SELinux/AppArmor with strict policies to contain potential exploitation.
🔍 How to Verify
Check if Vulnerable:
Check installed Intel Ethernet driver version: modinfo igb | grep versionCheck Version:
modinfo igb | grep versionVerify Fix Applied:
Verify driver version is 1.17.2 or later: modinfo igb | grep version📡 Detection & Monitoring
Log Indicators:
- Kernel logs showing driver crashes or unexpected privilege escalation
- Audit logs showing unusual process privilege changes
Network Indicators:
- Unusual outbound connections from system post-exploitation
SIEM Query:
source="kernel" AND ("igb" OR "Intel Ethernet") AND ("segfault" OR "panic" OR "oops")