ext4 security

  1. CVE-2026-31447: ext4 Rejects bigalloc with s_first_data_block for Safer Mounts

    The Linux kernel has published CVE-2026-31447 for an ext4 mount-time validation flaw, and the fix is narrow but important: reject filesystems that combine bigalloc with a nonzero s_first_data_block. In plain terms, ext4 already does not support that geometry, so the kernel now refuses to mount...
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    • cve 2026-31447 ext4 security filesystem hardening linux kernel
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    • Forum: Security Alerts