Critical Vulnerability in Linux Kernel: CVE-2023-53247 - Btrfs Page Handling Flaw
Summary
CVE-2023-53247: In the Linux kernel, the following vulnerability has been resolved: btrfs: set_page_extent_mapped after read_folio in btrfs_cont_expand While trying to get the subpage blocksize tests running, I hit the following panic o... Affects linux versions 5.10.103-1 – 6.9.9-1. No fix is published. How to fix ↓
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Background
The Linux kernel is the core component of many operating systems, managing hardware resources and providing essential services for software applications. It is known for its stability, performance, and extensive support for various hardware architectures. However, vulnerabilities can arise, such as CVE-2023-53247, which affects the Btrfs file system, a modern file system designed for high performance and reliability. This vulnerability can lead to system crashes and data integrity issues if not addressed promptly.
Vulnerability Detail
CVE-2023-53247 is a vulnerability in the Linux kernel's Btrfs file system that occurs due to improper handling of page states during file operations. Specifically, the issue arises when the kernel attempts to set a page as mapped after reading it, which can lead to a kernel panic if the page's private data is cleared unexpectedly. This flaw can result in system instability and potential data loss, particularly when performing file operations that involve page management.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
Currently, there are no specific workarounds mentioned for this vulnerability. It is recommended to apply the patch as soon as it becomes available.
Conclusion
CVE-2023-53247 is a critical vulnerability in the Linux kernel's Btrfs file system that poses significant risks to system stability and data integrity. Users are urged to update their systems to the latest patched versions to mitigate these risks effectively. Utilizing tools like Vulert can help monitor and alert for such vulnerabilities in real-time.
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FAQ
CVE-2023-53247 is a vulnerability in the Linux kernel's Btrfs file system that can cause system crashes due to improper page handling.
This vulnerability can lead to kernel panics, resulting in system instability and potential data loss during file operations.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Visit Vulert Scanner to check if your application is affected without requiring installation.
While there are no specific workarounds, it is crucial to plan for an update as soon as possible to mitigate the risks associated with this vulnerability.
Detailed information can be found in the official CVE database and security advisories related to the Linux kernel.
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