File System Vulnerability in Linux Kernel Affecting EROFS by Dell

CVE-2025-39868

What is CVE-2025-39868?

A runtime warning in the EROFS file system of the Linux kernel has been addressed, triggered during the unmounting process when not all Direct Access (DAX) entries had been removed. This issue originated from a prior fix intended for XFS and EXT4 file systems but inadvertently missed EROFS. The warning can manifest as an error log when the system attempts to truncate files, potentially leading to performance inefficiencies. Users should ensure they upgrade to the latest kernel version to mitigate this vulnerability.

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