array size guard

About this tag
The array size guard tag covers discussions about using ARRAY_SIZE macros or similar compile-time checks to prevent out-of-bounds reads in kernel drivers. Tagged content includes a thread on a Linux kernel networking bug (CVE-2025-40252) in the QLogic QEDE driver, where a missing array size guard allowed potential out-of-bounds access in packet-aggregation routines. The fix involved adding proper bounds checking using ARRAY_SIZE to ensure loops terminate correctly. This tag is relevant for developers and system administrators working with Linux kernel security, static analysis, and driver maintenance.

  1. Linux Kernel QEDE CVE-2025-40252 Fix: ARRAY_SIZE Guard Stops Out-of-Bounds Read

    A small but important Linux kernel networking bug — tracked as CVE‑2025‑40252 — was fixed upstream after a static-analysis finding showed a potential out‑of‑bounds read in the QLogic QEDE driver. The vulnerable code lived in two packet-aggregation helper routines, qede_tpa_cont and qede_tpa_end...
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    • array size guard linux kernel out-of-bounds read qede driver
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    • Forum: Security Alerts