CVE-2025-2073
📋 TL;DR
This vulnerability allows a local attacker with low privileges to trigger an out-of-bounds read in the netfilter/ipset subsystem of the Linux kernel. This could lead to information disclosure by reading kernel memory contents. It affects ChromeOS devices running specific Linux kernel versions.
💻 Affected Systems
- ChromeOS
📦 What is this software?
Chrome Os by Google
⚠️ Risk & Real-World Impact
Worst Case
Kernel memory information disclosure leading to privilege escalation or system compromise if combined with other vulnerabilities.
Likely Case
Information disclosure of kernel memory contents, potentially exposing sensitive data or system information.
If Mitigated
Limited impact with proper access controls and isolation preventing local attackers from reaching the vulnerable component.
🎯 Exploit Status
Requires local access and low privileges. Exploitation involves triggering specific conditions in netfilter/ipset.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check ChromeOS updates for specific kernel patches
Vendor Advisory: https://issues.chromium.org/issues/b/380043638
Restart Required: Yes
Instructions:
1. Update ChromeOS to latest version via Settings > About ChromeOS > Check for updates. 2. Apply any available kernel updates. 3. Reboot the system.
🔧 Temporary Workarounds
Disable ipset module
linuxUnload the ipset kernel module if not required
sudo modprobe -r ip_set
echo 'blacklist ip_set' | sudo tee /etc/modprobe.d/blacklist-ipset.conf
Restrict local access
allLimit local user accounts and implement strict access controls
🧯 If You Can't Patch
- Implement strict local user access controls and privilege separation
- Monitor for suspicious local activity and kernel logs
🔍 How to Verify
Check if Vulnerable:
Check kernel version with 'uname -r' and verify if it's in affected range (6.1, 5.15, 5.10, 5.4, 4.19) on ChromeOSCheck Version:
uname -rVerify Fix Applied:
Check ChromeOS version and kernel version after update. Verify ipset module is either patched or disabled.📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- System crash reports
- Unusual kernel module activity
Network Indicators:
- None - local vulnerability only
SIEM Query:
source="kernel" AND ("panic" OR "oops" OR "ipset")