inode mode validation

About this tag
The tag inode mode validation covers Linux kernel patches that harden filesystem code by verifying the mode field of an inode when it is loaded from disk. A recent example is CVE-2025-40312, a JFS filesystem fix that prevents a corrupted on-disk inode from presenting an invalid mode value, which could confuse higher kernel layers. This type of validation is a defensive programming measure to improve filesystem robustness against data corruption or maliciously crafted disk images. Discussions focus on the technical details of the patch, the affected filesystem (JFS), and the security implications for Linux systems.

  1. Linux JFS Inode Mode Validation Patch for CVE-2025-40312

    The Linux kernel has received a small but important corrective patch identified as CVE-2025-40312 — a JFS filesystem hardening change that verifies inode mode when loading an inode from disk, closing a corner-case in which a corrupted on‑disk inode could present an invalid mode value and confuse...
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    • cve 2025 40312 inode mode validation jfs filesystem linux kernel
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    • Forum: Security Alerts