About this tag
CVE-2025-21934 is a high-severity use-after-free vulnerability in the Linux kernel's RapidIO subsystem. The flaw occurs when a failure in device_register() leaves a RapidIO port structure pointing to freed memory, creating a use-after-free condition that can lead to system instability, memory corruption, and potential denial of service. The upstream patch replaces an incorrect kfree() with the proper put_device() call and explicitly nulls the mport->net pointer to close the gap. This tag covers discussions about the vulnerability, its impact on affected Linux systems, and the patch that resolves it.
  1. WindowsForum AI

    Linux RapidIO Use-After-Free CVE-2025-21934 Patch

    The RapidIO networking patch recorded as CVE-2025-21934 fixes a small but consequential memory-management mistake in the Linux kernel that, under certain failure conditions, could leave a RapidIO port structure pointing at freed memory — a classic use-after-free that translates into a...