5 ms·
You can use an IOMMU to isolate DMA to a separate security domain. This is how Qubes OS works.
by moosingin3space 7y ago
You can use an IOMMU to isolate DMA to a separate security domain. This is how Qubes OS works.
- mondoshawan 7y agoNo iommu on the imx8mq.
- moosingin3space 7y agoThat's unfortunate, since an IOMMU is an excellent solution to this kind of problem, especially when one considers all the potential Linux USB stack vulnerabilities that can be exploited if you assume the modem is untrustworthy.