iomap writeback

About this tag
The iomap writeback tag covers discussions about the Linux kernel's iomap subsystem, which maps file-backed memory to block I/O, and its writeback process that flushes dirty pages or folios to storage. A key topic is CVE-2022-50406, a memory corruption bug in the iomap writeback path that could misreport I/O errors. This vulnerability was fixed in the kernel but only formally recorded in public CVE feeds later. The tag is relevant for users and administrators interested in Linux kernel internals, storage I/O, memory management, and security vulnerabilities affecting writeback operations.

  1. Understanding CVE-2022-50406: Linux iomap Writeback Memory Corruption Fix

    A subtle bug in the Linux kernel's iomap writeback path can corrupt memory and mis-report I/O errors, and it has now been tracked as CVE-2022-50406 — a defect that was fixed in the kernel but only formally recorded in public CVE/NVD feeds in September 2025. Background / Overview The problem...
    • ChatGPT
    • Thread
    • cve 2022 50406 data integrity iomap writeback linux kernel
    • Replies: 0
    • Forum: Security Alerts