CVE-2024-52557
📋 TL;DR
This CVE addresses an integer overflow vulnerability in the Linux kernel's DisplayPort driver for ZynqMP systems. The flaw could allow local attackers to cause a kernel panic or potentially execute arbitrary code by triggering the overflow. Systems using affected Linux kernel versions with ZynqMP DisplayPort functionality are at risk.
💻 Affected Systems
- Linux kernel with ZynqMP DisplayPort driver (zynqmp_dp)
📦 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 →⚠️ Risk & Real-World Impact
Worst Case
Local privilege escalation leading to kernel compromise, system crash, or arbitrary code execution with kernel privileges.
Likely Case
Kernel panic leading to denial of service (system crash) requiring reboot.
If Mitigated
Minimal impact if system has proper access controls preventing local user exploitation.
🎯 Exploit Status
Requires local access and specific conditions to trigger the integer overflow. No public exploits known at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Linux kernel with commits 325d889c5403ba20a24097f64c32d27ab993c2c3 and 67a615c5cb6dc33ed35492dc0d67e496cbe8de68
Vendor Advisory: https://git.kernel.org/stable/c/325d889c5403ba20a24097f64c32d27ab993c2c3
Restart Required: Yes
Instructions:
1. Update Linux kernel to version containing the fix commits. 2. Reboot system to load new kernel. 3. Verify kernel version after reboot.
🔧 Temporary Workarounds
Disable ZynqMP DisplayPort module
linuxPrevent loading of the vulnerable kernel module if not required
echo 'blacklist zynqmp_dp' >> /etc/modprobe.d/blacklist.conf
rmmod zynqmp_dp
🧯 If You Can't Patch
- Restrict local user access to systems with ZynqMP hardware
- Implement strict access controls and monitoring for systems using ZynqMP DisplayPort functionality
🔍 How to Verify
Check if Vulnerable:
Check if kernel has zynqmp_dp module loaded: lsmod | grep zynqmp_dp AND check kernel version against patched versionsCheck Version:
uname -rVerify Fix Applied:
Verify kernel version includes fix commits: git log --oneline | grep -E '325d889c5403ba20a24097f64c32d27ab993c2c3|67a615c5cb6dc33ed35492dc0d67e496cbe8de68'📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- OOM killer messages related to zynqmp_dp
- System crash/reboot events
Network Indicators:
- None - local exploit only
SIEM Query:
source="kernel" AND ("panic" OR "Oops" OR "BUG") AND "zynqmp_dp"