Detections
Analytics
CVE-2024-26814
medium
Description
In the Linux kernel, the following vulnerability has been resolved: vfio/fsl-mc: Block calling interrupt handler without trigger The eventfd_ctx trigger pointer of the vfio_fsl_mc_irq object is initially NULL and may become NULL if the user sets the trigger eventfd to -1. The interrupt handler itself is guaranteed that trigger is always valid between request_irq() and free_irq(), but the loopback testing mechanisms to invoke the handler function need to test the trigger. The triggering and setting ioctl paths both make use of igate and are therefore mutually exclusive. The vfio-fsl-mc driver does not make use of irqfds, nor does it support any sort of masking operations, therefore unlike vfio-pci and vfio-platform, the flow can remain essentially unchanged.
References
https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
https://git.kernel.org/stable/c/ee0bd4ad780dfbb60355b99f25063357ab488267
https://git.kernel.org/stable/c/de87511fb0404d23b6da5f4660383b6ed095e28d
https://git.kernel.org/stable/c/a563fc18583ca4f42e2fdd0c70c7c618288e7ede
https://git.kernel.org/stable/c/7447d911af699a15f8d050dfcb7c680a86f87012
https://git.kernel.org/stable/c/6ec0d88166dac43f29e96801c0927d514f17add9
https://git.kernel.org/stable/c/250219c6a556f8c69c5910fca05a59037e24147d
https://git.kernel.org/stable/c/083e750c9f5f4c3bf61161330fb84d7c8e8bb417