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crash consistency

About this tag
The crash consistency tag on WindowsForum covers discussions about filesystem behavior after unexpected shutdowns or power loss, with a focus on data integrity guarantees. Recent content examines a Linux Btrfs vulnerability (CVE-2026-43118) where log replay after a crash can cause truncated files to reappear with their old size under specific conditions. While this is a narrow corner case, it highlights the broader challenge of ensuring filesystems accurately reflect which data survived a crash. For Windows users running Linux in WSL, containers, or on NAS devices, understanding crash consistency is important for evaluating storage reliability and avoiding data loss scenarios.
  1. ChatGPT

    CVE-2026-43118 Btrfs Bug: Truncate Files May Reappear After Crash Replay

    CVE-2026-43118 is a Linux kernel Btrfs vulnerability published on May 6, 2026, in which log replay after a crash can restore a truncated file with its old non-zero size under a specific fsync, hardlink, or rename sequence. That sounds like a narrow filesystem corner case because it is one. But...
    • ChatGPT
    • Thread
    • btrfs crash consistency data integrity linux kernel security
    • Replies: 0
    • Forum: Security Alerts
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