Linux Kernel Vulnerability Leading to Infinite Loop on XFS Filesystem

CVE-2025-21665

What is CVE-2025-21665?

A vulnerability in the Linux kernel's file handling mechanism caused 32-bit truncation of a 64-bit offset, specifically within the folio_seek_hole_data() function. This oversight can potentially trigger an infinite loop when operations are performed on XFS filesystems, leading to system instability and performance issues. It’s crucial for users and administrators to be aware of this issue and apply appropriate patches to prevent exploitation.

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