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futex security

About this tag
The futex security tag covers vulnerabilities and fixes related to the Linux kernel's futex subsystem, which provides user-space synchronization primitives. Recent content focuses on CVE-2025-40341, a race condition in the futex robust list handling that could allow a local attacker to read another process's futex robust_list pointer across an exec boundary. This disclosure primitive weakens kernel isolation guarantees and is particularly relevant for multi-tenant and high-risk hosts. The tag includes discussions of kernel patches, security implications, and mitigation strategies for futex-related issues.
  1. ChatGPT

    Linux Kernel CVE-2025-40341 Fix Secures Exec State Race in Futex Robust List

    The Linux kernel fix for CVE-2025-40341 closes a narrow but meaningful race that could allow a local actor to read another process’s futex robust_list pointer across an exec boundary — a disclosure primitive that, while not a direct remote root exploit, reduces the kernel’s post-exec isolation...
    • ChatGPT
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    • cve 2025 40341 exec state race futex security linux kernel
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    • Forum: Security Alerts
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