Critical Vulnerability in Linux Kernel: s390/pkey Memory Management Issue
Summary
DEBIAN-CVE-2024-42158: In the Linux kernel, the following vulnerability has been resolved: s390/pkey: Use kfree_sensitive() to fix Coccinelle warnings Replace memzero_explicit() and kfree() with kfree_sensitive() to fix warnings reported by Co... Affects linux versions < 6.9.9-1. Fixed in 6.9.9-1. 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 kernel is the core component of many operating systems, responsible for managing hardware and system resources. It provides essential services for all other parts of the operating system. This vulnerability affects the Linux kernel versions in Debian 13 and 14, specifically related to memory management functions that could lead to potential security risks.
Vulnerability Detail
In the Linux kernel, a vulnerability has been identified in the s390/pkey subsystem. The issue arises from the improper use of memory management functions, where 'memzero_explicit()' and 'kfree()' should be replaced with 'kfree_sensitive()'. This oversight can lead to warnings and potential security implications, as sensitive data may not be adequately cleared from memory, increasing the risk of data leakage or exploitation by malicious actors.
How To Fix
Minimum fixed version
6.9.9-1
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. The best course of action is to apply the patch as soon as it is available.
Conclusion
The vulnerability identified in the Linux kernel's s390/pkey subsystem poses a significant risk due to improper memory management. Users are strongly advised to update their systems to the latest patched version to ensure security and integrity. Utilizing tools like Vulert can help in monitoring vulnerabilities effectively.
See every vulnerability recorded for linux →
FAQ
The vulnerability involves improper memory management in the Linux kernel, which could lead to sensitive data not being cleared from memory.
The vulnerability affects Linux kernel versions in Debian 13 and 14, specifically before version 6.9.9-1.
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.
While there are no specific workarounds, it is crucial to prioritize updating your kernel to mitigate the risk associated with this vulnerability.
Generally, updates are designed to improve system performance and security. However, it is advisable to review the release notes for any specific changes.
References
Related vulnerabilities
Recent vulnerabilities recorded for linux.
