CVE-2024-58099
📋 TL;DR
A memory corruption vulnerability in the Linux kernel's vmxnet3 driver allows packet corruption when using XDP (eXpress Data Path) with encapsulation headers. This affects Linux systems using VMware's vmxnet3 network driver with XDP enabled, potentially causing network connectivity issues and packet drops.
💻 Affected Systems
- Linux kernel
📦 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 →⚠️ Risk & Real-World Impact
Worst Case
Persistent network connectivity failures, service disruption, and potential data corruption in network traffic when using affected configurations.
Likely Case
Intermittent packet corruption leading to connectivity issues, dropped packets, and degraded network performance in environments using vmxnet3 with XDP encapsulation.
If Mitigated
No impact if XDP is disabled or if systems don't use vmxnet3 driver with encapsulation headers.
🎯 Exploit Status
Exploitation requires specific driver configuration, XDP usage, and BPF programs that modify packet headers. This is a reliability issue rather than a security exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Linux kernel with commits 4678adf94da4a9e9683817b246b58ce15fb81782, 59ba6cdadb9c26b606a365eb9c9b25eb2052622d, f82eb34fb59a8fb96c19f4f492c20eb774140bb5
Vendor Advisory: https://git.kernel.org/stable/c/4678adf94da4a9e9683817b246b58ce15fb81782
Restart Required: Yes
Instructions:
1. Update Linux kernel to version containing the fix commits. 2. Reboot system to load new kernel. 3. Verify vmxnet3 driver is using patched code.
🔧 Temporary Workarounds
Disable XDP on vmxnet3 interfaces
linuxPrevent XDP processing on vmxnet3 network interfaces to avoid the vulnerability
ip link set dev <interface> xdp off
Avoid encapsulation headers in XDP programs
linuxModify BPF programs to not add encapsulation headers when using vmxnet3
🧯 If You Can't Patch
- Disable XDP features on all vmxnet3 network interfaces
- Use alternative network drivers or virtualization platforms if possible
🔍 How to Verify
Check if Vulnerable:
Check if system uses vmxnet3 driver with XDP enabled and runs BPF programs that add encapsulation headersCheck Version:
uname -rVerify Fix Applied:
Verify kernel version includes the fix commits and test XDP functionality with encapsulation headers📡 Detection & Monitoring
Log Indicators:
- Increased packet drops on vmxnet3 interfaces
- Network connectivity errors in applications
Network Indicators:
- Unexpected packet corruption
- Increased retransmissions
SIEM Query:
Search for network interface errors or packet drop events on systems using vmxnet3 driver