CVE-2022-49017
📋 TL;DR
This is a use-after-free vulnerability in the Linux kernel's TIPC (Transparent Inter-Process Communication) subsystem. An attacker could potentially cause a kernel crash (denial of service) or possibly execute arbitrary code with kernel privileges. All Linux systems using TIPC are affected.
💻 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 →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
Kernel panic leading to system crash and potential remote code execution with kernel privileges.
Likely Case
Kernel crash causing denial of service, requiring system reboot.
If Mitigated
No impact if TIPC is disabled or patched.
🎯 Exploit Status
Exploitation requires sending specially crafted TIPC messages to trigger the use-after-free condition.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Kernel versions containing commits 1daec0815655e110c6f206c5e777a4af8168ff58, 3067bc61fcfe3081bf4807ce65560f499e895e77, a1ba595e35aa3afbe417ff0af353afb9f65559c0, or e128190adb2edfd5042105b5d1ed4553f295f5ef
Vendor Advisory: https://git.kernel.org/stable/c/1daec0815655e110c6f206c5e777a4af8168ff58
Restart Required: Yes
Instructions:
1. Update Linux kernel to patched version from your distribution vendor. 2. Reboot system to load new kernel.
🔧 Temporary Workarounds
Disable TIPC module
linuxPrevent loading of TIPC kernel module to mitigate vulnerability
echo 'install tipc /bin/false' >> /etc/modprobe.d/disable-tipc.conf
rmmod tipc
Block TIPC traffic
linuxBlock TIPC network traffic at firewall
iptables -A INPUT -p tipc -j DROP
iptables -A OUTPUT -p tipc -j DROP
🧯 If You Can't Patch
- Disable TIPC module if not required for system functionality
- Implement network segmentation to isolate systems using TIPC
🔍 How to Verify
Check if Vulnerable:
Check if TIPC module is loaded: lsmod | grep tipc. Check kernel version against patched versions.Check Version:
uname -rVerify Fix Applied:
Verify kernel version includes the fix commits and TIPC module functions correctly if required.📡 Detection & Monitoring
Log Indicators:
- Kernel panic messages
- System crash/reboot logs
- TIPC protocol errors in system logs
Network Indicators:
- Unusual TIPC traffic patterns
- TIPC protocol exploitation attempts
SIEM Query:
source="kernel" AND ("panic" OR "Oops" OR "tipc")