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concurrency bug

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Discussions on WindowsForum.com about concurrency bugs cover real-world locking failures, deadlocks, and race conditions in Linux kernel subsystems and libraries. Topics include CVE-2026-31509, a locking-order failure in the NFC NCI close path; CVE-2026-31486, a missing mutex in PMBus regulator operations that required redesign to avoid self-deadlock; CVE-2024-23307, an integer overflow in md/raid5 stripe cache accounting triggered by concurrent modifications; and CVE-2023-27537, a double-free in libcurl's HSTS sharing code when threads share storage. These threads focus on root-cause analysis, patch details, and stability implications for systems running affected code.
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    CVE-2026-31509 Linux NFC Locking Fix: Deadlock Risk in Close Path

    Overview CVE-2026-31509 is a Linux kernel vulnerability in the NFC NCI path that was published on April 22, 2026, and quickly drew attention because the bug is not a flashy memory corruption issue but a locking-order failure with real stability implications. The upstream fix is narrowly scoped...
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    • concurrency bug cve-2026-31509 linux kernel nfc nci
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2026-31486: Linux PMBus Deadlock Fix Shows Concurrency Matters

    CVE-2026-31486 is a useful reminder that some of the most serious Linux kernel bugs are not glamorous memory-corruption exploits but plain old synchronization failures that can still destabilize a system. In this case, the flaw sits in the hwmon pmbus/core path, where regulator voltage...
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    • concurrency bug cve 2026 linux kernel pmbus regulator
    • Replies: 0
    • Forum: Security Alerts
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    Linux MD Raid5 CVE-2024-23307: Prevent DoS with Latest Patches

    The Linux kernel’s md/raid5 code contained a subtle but dangerous integer‑overflow bug in the function raid5_cache_count() that was tracked as CVE‑2024‑23307 — a defect that can be forced by concurrent modifications of RAID stripe‑count variables and that may lead to a sustained or persistent...
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    • concurrency bug cve 2024 23307 linux kernel raid5
    • Replies: 0
    • Forum: Security Alerts
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    CVE-2023-27537: Libcurl HSTS Concurrency Bug and Patch Guide

    A concurrency flaw in libcurl’s HSTS sharing code can cause a double-free or use-after-free when two threads share the same HSTS storage, producing crashes and availability failures for affected applications; the bug was disclosed as CVE-2023-27537 and addressed by the curl project and...
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    • concurrency bug hsts sharing libcurl vendor patching
    • Replies: 0
    • Forum: Security Alerts
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