CVE-2024-45030
📋 TL;DR
A memory corruption vulnerability in the Linux kernel's igb network driver causes payload corruption during packet transmission when MAX_SKB_FRAGS is set to high values. This affects systems using Intel Gigabit Ethernet adapters with the igb driver. Attackers could potentially cause denial of service or data corruption on vulnerable systems.
💻 Affected Systems
- Linux kernel with igb driver
📦 What is this software?
Linux Kernel by Linux
The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...
Learn more about Linux Kernel →Linux Kernel by Linux
The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...
Learn more about Linux Kernel →Linux Kernel by Linux
The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...
Learn more about Linux Kernel →Linux Kernel by Linux
The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...
Learn more about Linux Kernel →Linux Kernel by Linux
The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...
Learn more about Linux Kernel →Linux Kernel by Linux
The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...
Learn more about Linux Kernel →⚠️ Risk & Real-World Impact
Worst Case
System crash, kernel panic, or persistent denial of service requiring reboot
Likely Case
Network connectivity issues, packet corruption, and SSH connection failures as demonstrated in the bug report
If Mitigated
Minor performance impact or no effect if MAX_SKB_FRAGS is not set to high values
🎯 Exploit Status
Exploitation requires ability to modify MAX_SKB_FRAGS parameter and trigger network traffic. No public exploits known.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Kernel versions containing commits 8aba27c4a5020abdf60149239198297f88338a8d, 8ea80ff5d8298356d28077bc30913ed37df65109, or b52bd8bcb9e8ff250c79b44f9af8b15cae8911ab
Vendor Advisory: https://bugzilla.redhat.com/show_bug.cgi?id=2265320
Restart Required: Yes
Instructions:
1. Update Linux kernel to patched version from your distribution's repository. 2. Reboot system to load new kernel. 3. Verify kernel version after reboot.
🔧 Temporary Workarounds
Limit MAX_SKB_FRAGS value
linuxSet MAX_SKB_FRAGS to 17 or lower to avoid triggering the vulnerability
echo 17 > /sys/module/igb/parameters/MaxSKBFrags
🧯 If You Can't Patch
- Avoid setting MAX_SKB_FRAGS to high values (keep at 17 or below)
- Monitor systems for network connectivity issues and packet corruption
🔍 How to Verify
Check if Vulnerable:
Check if MAX_SKB_FRAGS is set to high value: cat /sys/module/igb/parameters/MaxSKBFragsCheck Version:
uname -rVerify Fix Applied:
Check kernel version contains fix commits or test SSH connectivity with MAX_SKB_FRAGS=45📡 Detection & Monitoring
Log Indicators:
- Kernel oops messages
- Network driver errors in dmesg
- SSH connection failures
Network Indicators:
- Packet corruption
- Unexpected TCP retransmissions
SIEM Query:
source="dmesg" AND ("igb" OR "MAX_SKB_FRAGS") AND (error OR fail OR panic)