devm lifecycle

About this tag
The devm lifecycle tag on WindowsForum.com covers discussions about the managed device resource lifecycle in the Linux kernel, particularly within the Intel i915 graphics driver. A key topic is the CVE-2024-39479 vulnerability, a use-after-free bug caused by improper devm usage in the hwmon path. This defect allows sysfs attributes to be accessed after driver data is released, leading to local denial-of-service. The tag explores how devm resource management can introduce lifecycle mismatches when not handled correctly, and the fixes applied to mitigate such issues. Content focuses on kernel-level debugging, security patches, and the operational impact of lifecycle bugs in driver code.

  1. i915 hwmon devm fix: patch fixes CVE-2024-39479 UAF risk

    A small change in the Intel i915 graphics stack — a decision to “get rid of devm” in the hwmon path — produced a classic kernel lifecycle bug with outsized operational impact: tracked as CVE‑2024‑39479, the defect creates a use‑after‑free (UAF) and local denial‑of‑service vector by letting hwmon...
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    • devm lifecycle hwmon sysfs kernel security linux i915
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    • Forum: Security Alerts