Memory Safety Vulnerability in Linux Kernel - CVE-2024-57930
Summary
CVE-2024-57930: In the Linux kernel, the following vulnerability has been resolved: tracing: Have process_string() also allow arrays In order to catch a common bug where a TRACE_EVENT() TP_fast_assign() assigns an address of an allocate... Affects linux versions < 6.1.124-1. Fixed in 6.1.124-1. How to fix ↓
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Background
The Linux kernel is the core component of many operating systems, responsible for managing hardware resources and providing essential services to software applications. It is known for its stability, performance, and scalability. However, like any complex software, it is susceptible to vulnerabilities that can compromise system integrity and security. CVE-2024-57930 specifically addresses an issue related to the handling of string references in trace events, which could lead to unsafe memory access.
Vulnerability Detail
CVE-2024-57930 is a vulnerability in the Linux kernel that arises from improper handling of string references in trace events. The issue occurs when a TRACE_EVENT() TP_fast_assign() assigns an address of an allocated string to the ring buffer, which may be referenced later in TP_printk() after the string has been freed. This can lead to dereferencing invalid memory, potentially causing system crashes or unpredictable behavior. The vulnerability was identified during the registration of trace events, where the function test_event_printk() checks for unsafe string references. However, it may produce false positives, particularly when referencing arrays, which are deemed safe under certain conditions.
How To Fix
Minimum fixed version
6.1.124-1
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. Users are advised to apply the patch as soon as it becomes available to mitigate any potential risks.
Conclusion
CVE-2024-57930 is a significant vulnerability in the Linux kernel that can lead to unsafe memory access and system instability. It is essential for users to update their systems to the patched version as soon as it becomes available. Monitoring tools like Vulert can assist in identifying vulnerabilities in your software, ensuring better security practices.
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FAQ
CVE-2024-57930 is a vulnerability in the Linux kernel that involves unsafe memory access due to improper handling of string references in trace events.
This vulnerability can lead to system crashes or unpredictable behavior if the kernel dereferences freed memory, potentially compromising system stability.
Yes, a patch is available for Debian 13 in version 6.12.9-1. Users should update their kernel to this version to mitigate the vulnerability.
While there are no specific workarounds, it is crucial to monitor for updates and apply the patch as soon as it is available to protect your system.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. You can check if your application is affected by CVE-2024-57930 using the Vulert playground at Vulert Scanner without any signup.
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