Todd Brandt

Name of the Vulnerable Software and Affected Versions: Linux kernel (affected versions not specified) Description: The issue is related to the iommu/vt-d component of the Linux kernel, where the `domain context clear()` function incorrectly called `pci for each dma alias()` to set up context entries for non-PCI devices. This could lead to kernel hangs or other unexpected behavior. A check has been added to only call `pci for each dma alias()` for PCI devices, and for non-PCI devices, `domain context clear one()` is called directly. Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

**Name of the Vulnerable Software and Affected Versions** Linux kernel (affected versions not specified) **Description** A vulnerability in the Linux kernel has been resolved, related to the tracing feature. The issue occurred when a fix to the ring buffer recursion detection caused a hung machine during suspend/resume testing. The problem arose from the `trace clock global()` function taking a spin lock and then trying to take it again, resulting in a dead lock. To address this, the `trace clock global()` code was restructured to never block, using a trylock to grab the lock for updating the `prev time` and retrying if it fails. **Recommendations** At the moment, there is no information about a newer version that contains a fix for this vulnerability.