Moderate Security Vulnerability in Kernel Package: CVE-2023-52933
Summary
ALSA-2025:9880: Moderate: kernel security update. Affects kernel versions < 5.14.0-570.24.1.el9_6. Fixed in 5.14.0-570.24.1.el9_6. How to fix ↓
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Background
The kernel package is a fundamental component of the Linux operating system, responsible for managing system resources and facilitating communication between hardware and software. It provides essential services such as process management, memory management, and device control. The kernel is critical for system stability and performance, making its security paramount. This vulnerability specifically affects the handling and sanity checking of xattr_ids count within the Squashfs file system, potentially leading to unauthorized access or system instability.
Vulnerability Detail
The vulnerability identified as CVE-2023-52933 arises from improper handling and validation of extended attribute IDs (xattr_ids) in the Squashfs file system. This flaw can be exploited by an attacker to manipulate the xattr_ids count, leading to potential unauthorized access to sensitive data or system crashes. The vulnerability is classified as moderate, indicating that while it may not lead to immediate catastrophic failures, it poses a significant risk to system integrity and data security.
How To Fix
Minimum fixed version
5.14.0-570.24.1.el9_6
This is the first release that contains the fix.
sudo dnf update kernelTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary measure, users can limit access to the affected file systems or disable the use of Squashfs until the kernel is updated. However, this is not a permanent solution and should only be used until the patch is applied.
Conclusion
The vulnerability CVE-2023-52933 poses a moderate risk to systems using the Linux kernel, particularly affecting the Squashfs file system. It is crucial to update the kernel package to the patched version to mitigate this risk and ensure system security.
See every vulnerability recorded for kernel →
FAQ
CVE-2023-52933 is a security vulnerability in the Linux kernel related to improper handling of extended attribute IDs in the Squashfs file system.
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 without requiring any signup.
The risks include unauthorized access to sensitive data and potential system crashes, which can compromise system integrity and stability.
To apply the patch, update the kernel package using the command 'sudo dnf update kernel' on AlmaLinux 9, and reboot the system afterward.
Yes, temporarily limit access to the affected file systems or disable the use of Squashfs until the kernel is updated.
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