serial driver vulnerability

About this tag
The serial driver vulnerability tag covers discussions about security flaws in serial drivers, particularly focusing on CVE-2025-38135. This vulnerability involves a NULL pointer dereference in the Linux kernel's mlb_usio_probe function due to a missing check on devm_ioremap() return value. The flaw can lead to kernel crashes and denial-of-service conditions. Content highlights how such low-level bugs in serial drivers remain common sources of instability and security impact, emphasizing the importance of proper memory-mapping API usage and NULL checks in kernel code.

  1. CVE-2025-38135: Linux Kernel NULL Pointer in mlb_usio_probe Fixed

    A simple missing NULL check inside a Linux kernel serial driver has been assigned CVE-2025-38135 — a low-level bug that can trigger a kernel-level null pointer dereference and, in the worst cases, a denial-of-service crash on affected systems. The fix is straightforward: check the return value...
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    • cve 2025 38135 devm ioremap linux kernel security serial driver vulnerability
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    • Forum: Security Alerts