Kernel Panic Vulnerability in Linux Package: CVE-2023-52978
Summary
CVE-2023-52978: In the Linux kernel, the following vulnerability has been resolved: riscv: kprobe: Fixup kernel panic when probing an illegal position The kernel would panic when probed for an illegal position. Affects linux versions < 6.1.11-1. Fixed in 6.1.11-1. How to fix ↓
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Background
The Linux kernel is the core component of the Linux operating system, responsible for managing hardware resources and providing essential services to applications. It supports a wide range of hardware architectures and is known for its stability and performance. However, vulnerabilities can arise, such as CVE-2023-52978, which affects the kernel's handling of kprobes, potentially leading to critical system failures.
Vulnerability Detail
CVE-2023-52978 is a vulnerability in the Linux kernel that can cause a kernel panic when probing an illegal position using kprobes. This occurs when the ebreak instruction of a kprobe disrupts the original kernel code, leading to a corrupted kernel stack. The panic can be triggered by improperly configured kprobe events, which can result in system instability and crashes. The vulnerability is particularly concerning for systems that rely on kprobes for debugging and monitoring.
How To Fix
Minimum fixed version
6.1.11-1
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
As a temporary workaround, ensure that kprobes are configured correctly and avoid probing illegal positions. Users should verify the correctness of the probe position before enabling kprobes to prevent kernel panics.
Conclusion
CVE-2023-52978 is a critical vulnerability in the Linux kernel that can lead to kernel panics due to improper kprobe configurations. It is essential to update to the patched version of the Linux package to mitigate this risk. Users should also be cautious with kprobe configurations to avoid triggering this vulnerability.
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FAQ
CVE-2023-52978 is a vulnerability in the Linux kernel that can lead to kernel panics when kprobes are used incorrectly.
If exploited, this vulnerability can cause your system to crash, leading to potential data loss and downtime.
Kprobes are a debugging mechanism in the Linux kernel that allows users to dynamically break into any kernel routine and collect debugging information.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.
Yes, ensuring that kprobes are configured correctly and avoiding illegal probe positions can help prevent exploitation.
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