Tracker / CVE-2024-27437
CVE-2024-27437
Medium 5.5
In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Disable auto-enable of exclusive INTx IRQ Currently for devices requiring masking at the irqchip for INTx, ie. devices without DisINTx support, the IRQ is enabled in request_irq() and subsequently disabled as necessary to align with the masked status flag. This presents a window where the interrupt could fire between these events, resulting in the IRQ incrementing the disable depth twice. This would be unrecoverable for a user since the masked flag prevents nested enables through vfio. Instead, invert the logic using IRQF_NO_AUTOEN such that exclusive INTx is never auto-enabled, then unmask as required.
Affected products and versions
| debian | debian_linux |
|---|---|
| linux | linux_kernel · 3.6 → 6.1.84 |
| linux | linux_kernel · 6.2 → 6.6.24 |
| linux | linux_kernel · 6.7 → 6.7.12 |
| linux | linux_kernel · 6.8 → 6.8.3 |
| linux | linux_kernel · 6.8.4 → 6.8.12 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.