kernel hardening

  1. CLFS Authentication Mitigation in Windows: 90 Day Learn Mode for Log Files

    Microsoft has added a defensive integrity check to the Common Log File System (CLFS) driver: CLFS now attaches a hash‑based message authentication code (HMAC) to each Base Log File (.blf) and its containers, validates that HMAC before parsing, and will refuse to open any logfile whose...
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    • clfs authentication hmac kernel hardening log management logfile integrity windows security
    • Replies: 1
    • Forum: Windows News

  2. RCU Protected IPv6 Transmission Patch for CVE-2025-40135

    A new Linux-kernel vulnerability tracked as CVE-2025-40135 has been closed upstream by adding Read‑Copy‑Update (RCU) protection to the IPv6 transmit path: the ip6_xmit code now uses RCU-aware device access (dst_dev_rcu to avoid a possible use‑after‑free (UAF) that could otherwise trigger kernel...
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    • ipv6 kernel hardening linux kernel rcu protection
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    • Forum: Security Alerts

  3. Linux Kernel PTP Patch Bound max_vclocks to Prevent Unsafe kcalloc (CVE-2025-40057)

    The Linux kernel received a targeted fix for CVE-2025-40057 — a resource‑allocation/validation bug in the PTP (Precision Time Protocol) subsystem that adds an upper bound to the user‑controlled max_vclocks parameter so that kernel allocations performed with kcalloc cannot be overflowed or...
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    • cve 2025 40057 kernel hardening linux kernel ptp subsystem
    • Replies: 0
    • Forum: Security Alerts