Kernel NULL Pointer Dereference Vulnerability in Linux Package
Summary
DEBIAN-CVE-2024-56588: In the Linux kernel, the following vulnerability has been resolved: scsi: hisi_sas: Create all dump files during debugfs initialization For the current debugfs of hisi_sas, after user triggers dump, the driver allocate m... Affects linux versions < 6.12.5-1. Fixed in 6.12.5-1. How to fix ↓
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Background
The Linux package is a core component of the Debian operating system, providing essential functionalities for managing hardware and system resources. It is widely used across various distributions and is known for its stability and performance. However, it is also susceptible to vulnerabilities that can compromise system integrity and security.
Vulnerability Detail
In the Linux kernel, a vulnerability has been identified in the hisi_sas driver related to debugfs initialization. When a user triggers a dump while the driver is unbound, it can lead to a kernel NULL pointer dereference, causing a system hang. This issue arises from improper memory allocation during the creation of debugfs files, which can result in a crash and potential denial of service.
How To Fix
Minimum fixed version
6.12.5-1
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, there are no specific workarounds mentioned for this vulnerability. It is recommended to apply the patch as soon as it becomes available.
Conclusion
The identified vulnerability in the Linux kernel poses significant risks to system stability and security. It is crucial for users to update their systems to the patched version to mitigate these risks effectively.
See every vulnerability recorded for linux →
FAQ
The vulnerability is a kernel NULL pointer dereference that occurs during debugfs initialization in the hisi_sas driver.
The vulnerability affects Debian versions 13 and 14 that utilize the Linux kernel prior to version 6.12.5-1.
You can use Vulert, which monitors open-source vulnerabilities in your software. By uploading your manifest file, you can check if your application is affected by this vulnerability.
Exploiting this vulnerability can lead to system hangs and crashes, resulting in denial of service and potential data loss.
While there are no specific workarounds, it is advisable to avoid triggering dumps while the driver is unbound until the patch is applied.
References
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