CVE-2023-53150
📋 TL;DR
This CVE describes a NULL pointer dereference vulnerability in the QLogic Fibre Channel driver (qla2xxx) in the Linux kernel. An attacker could potentially cause a kernel panic or system crash by triggering this condition. Systems using affected Linux kernel versions with QLogic Fibre Channel adapters are vulnerable.
💻 Affected Systems
- Linux kernel with qla2xxx 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 →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 denial of service, potentially disrupting storage operations and causing data unavailability.
Likely Case
System crash or kernel panic resulting in denial of service, requiring system reboot to restore functionality.
If Mitigated
No impact if the system is patched or doesn't use QLogic Fibre Channel adapters.
🎯 Exploit Status
Exploitation requires specific conditions to trigger the NULL pointer dereference, likely through crafted SCSI commands or Fibre Channel operations.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Kernel versions containing the git commits referenced in the CVE description
Vendor Advisory: https://git.kernel.org/stable/c/005961bd8f066fe931104f67c34ebfcc7f240099
Restart Required: Yes
Instructions:
1. Update Linux kernel to patched version from your distribution vendor. 2. Reboot system to load new kernel. 3. Verify qla2xxx driver is functioning correctly post-update.
🔧 Temporary Workarounds
Disable qla2xxx driver
LinuxRemove or blacklist the qla2xxx kernel module if QLogic Fibre Channel adapters are not required.
echo 'blacklist qla2xxx' > /etc/modprobe.d/blacklist-qla2xxx.conf
rmmod qla2xxx
🧯 If You Can't Patch
- Restrict access to storage networks and systems using QLogic adapters
- Implement strict access controls and monitoring for systems with vulnerable configurations
🔍 How to Verify
Check if Vulnerable:
Check kernel version and verify if qla2xxx module is loaded: lsmod | grep qla2xxxCheck Version:
uname -rVerify Fix Applied:
Verify kernel version is updated beyond vulnerable versions and check system logs for qla2xxx driver stability.📡 Detection & Monitoring
Log Indicators:
- Kernel panic messages
- qla2xxx driver crash logs in dmesg or /var/log/messages
- System crash/reboot events
Network Indicators:
- Unusual Fibre Channel traffic patterns
- Storage connectivity disruptions
SIEM Query:
source="kernel" AND ("panic" OR "Oops" OR "qla2xxx")🔗 References
- https://git.kernel.org/stable/c/005961bd8f066fe931104f67c34ebfcc7f240099
- https://git.kernel.org/stable/c/00eca15319d9ce8c31cdf22f32a3467775423df4
- https://git.kernel.org/stable/c/0715da51391d223bf4981e28346770edea7eeb74
- https://git.kernel.org/stable/c/22b1d7c8bb59c3376430a8bad5840194b12bf29a
- https://git.kernel.org/stable/c/3f22f9ddbb29dba369daddb084be3bacf1587529
- https://git.kernel.org/stable/c/5addd62586a94a572359418464ce0ae12fa46187
- https://git.kernel.org/stable/c/a69125a3ce88d9a386872034e7664b30cc4bcbed
- https://git.kernel.org/stable/c/b06d1b525364bbcf4929b4b35d81945b10dc9883
