Critical NULL Pointer Dereference in Linux Kernel - linux Package Vulnerability
Summary
DEBIAN-CVE-2023-52450: In the Linux kernel, the following vulnerability has been resolved: perf/x86/intel/uncore: Fix NULL pointer dereference issue in upi_fill_topology() Get logical socket id instead of physical id in discover_upi_topology()... Affects linux versions < 6.6.15-1. Fixed in 6.6.15-1. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The linux package is a core component of the Debian operating system, providing the essential kernel that manages system resources and hardware interactions. It is responsible for enabling the execution of applications and ensuring system stability. The kernel is crucial for system performance and security, making it vital to address any vulnerabilities that may arise.
Vulnerability Detail
In the Linux kernel, a vulnerability has been identified in the perf/x86/intel/uncore module. This issue arises from a NULL pointer dereference in the upi_fill_topology() function, which can lead to system crashes or unexpected behavior. The vulnerability is triggered when the logical socket ID is incorrectly derived, resulting in an out-of-bounds access on the 'upi' variable. This flaw can compromise system integrity and stability, making it critical to apply the necessary fixes.
How To Fix
Minimum fixed version
6.6.15-1
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 available for this vulnerability. The best course of action is to apply the patch as soon as it is available.
Conclusion
The identified vulnerability in the Linux kernel poses a significant risk to system stability and integrity. It is essential for users to update their systems to the patched version to mitigate these risks. Regular monitoring and prompt updates are crucial for maintaining system security.
See every vulnerability recorded for linux →
FAQ
The vulnerability can lead to a NULL pointer dereference, potentially causing system crashes or instability.
You can use the Vulert platform to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected.
Yes, a patch has been released in version 6.6.15-1 of the linux package.
While there are no specific workarounds, it is advisable to monitor the situation and apply the patch as soon as possible.
Detailed information can be found in the Debian CVE database or by visiting the provided source link.
References
Related vulnerabilities
Recent vulnerabilities recorded for linux.
