Out-of-Bounds Array Access Vulnerability in Linux Kernel - CVE-2024-53228
Summary
DEBIAN-CVE-2024-53228: In the Linux kernel, the following vulnerability has been resolved: riscv: kvm: Fix out-of-bounds array access In kvm_riscv_vcpu_sbi_init() the entry->ext_idx can contain an out-of-bound index. Affects linux versions < 6.12.3-1. Fixed in 6.12.3-1. 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. The kernel is highly modular, allowing for various functionalities to be added or removed as needed. However, like any complex software, it is susceptible to vulnerabilities that can compromise system security and stability.
Vulnerability Detail
In the Linux kernel, specifically within the RISC-V architecture, a vulnerability has been identified in the function kvm_riscv_vcpu_sbi_init(). The issue arises from the entry->ext_idx variable, which can contain an out-of-bounds index. This variable serves as a special marker for base extensions that cannot be disabled. The vulnerability occurs because the special marker is not checked before indexing the array, potentially leading to out-of-bounds memory access. This could allow an attacker to exploit the vulnerability, leading to system crashes or unauthorized access to sensitive information.
How To Fix
Minimum fixed version
6.12.3-1
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 by updating the package as described in the 'how_to_fix' section.
Conclusion
The out-of-bounds array access vulnerability in the Linux kernel (CVE-2024-53228) poses significant risks to system security. It is imperative for users to update their Linux packages to the patched version to safeguard their systems against potential exploits. Utilizing tools like Vulert can help monitor and manage vulnerabilities effectively.
See every vulnerability recorded for linux →
FAQ
CVE-2024-53228 is a vulnerability in the Linux kernel that allows for out-of-bounds array access due to improper handling of the entry->ext_idx variable.
This vulnerability can lead to system crashes or unauthorized access to sensitive information, potentially compromising system integrity and security.
The vulnerability affects Linux versions in Debian 13 and 14 prior to the fixed version 6.12.3-1.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. By utilizing the Vulert playground, you can check if your application is affected without needing to sign up.
While there are no specific workarounds, it is crucial to prioritize updating your system to mitigate the risk associated with this vulnerability.
References
Related vulnerabilities
Recent vulnerabilities recorded for linux.
