Kernel Panic: Linux Package Vulnerability CVE-2023-53056 in qla2xxx Driver
Summary
CVE-2023-53056: In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Synchronize the IOCB count to be in order A system hang was observed with the following call trace: BUG: kernel NULL pointer dereference,... Affects linux versions < 6.1.25-1. Fixed in 6.1.25-1. How to fix ↓
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Background
The Linux kernel is a core component of the operating system that manages hardware and software interactions. It provides essential services for all other parts of the system. The qla2xxx driver is responsible for managing Fibre Channel host bus adapters, facilitating communication between the operating system and storage devices. This vulnerability affects the synchronization of Input/Output Command Blocks (IOCBs), which can lead to system hangs.
Vulnerability Detail
CVE-2023-53056 is a vulnerability in the Linux kernel's qla2xxx driver that causes a kernel NULL pointer dereference. This issue arises when the IOCB counts become out of order, preventing commands from being processed and ultimately causing the system to hang. The vulnerability was identified during a system hang incident, where a specific call trace indicated a failure in the wake-up mechanism for processes waiting on these commands.
How To Fix
Minimum fixed version
6.1.25-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade linuxTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
Currently, no specific workarounds are provided for this vulnerability. The best course of action is to apply the available patch as soon as possible.
Conclusion
CVE-2023-53056 is a critical vulnerability in the Linux kernel's qla2xxx driver that can lead to system hangs due to improper IOCB synchronization. Users are strongly advised to update their systems to the patched version 6.1.25-1 to prevent potential disruptions. Utilizing tools like Vulert can help monitor for such vulnerabilities in real-time.
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FAQ
CVE-2023-53056 is a vulnerability in the Linux kernel's qla2xxx driver that can cause system hangs due to improper synchronization of IOCB counts.
This vulnerability can lead to a kernel panic, causing your system to become unresponsive and potentially lose unsaved data.
If you are using Debian 12 or 13 with the Linux kernel version prior to 6.1.25-1, your system is affected by this vulnerability.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. Visit Vulert Scanner to check your application without needing to sign up.
While no specific workarounds are available, it is crucial to prioritize updating your system to mitigate the risk associated with this vulnerability.
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