Kernel: USB Type-C, NAX, CET

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Patches Ready For Getting DisplayPort Over USB Type-C Working For More Intel Hardware - Phoronix
Red Hat's Hans de Goede continues doing a commendable job improving the Linux support for various laptops with key improvements. One of the latest efforts by this longtime kernel developer has been about getting DisplayPort over USB Type-C connections working for more Intel hardware.
Hans de Goede announced on Friday that his patch-set around out-of-band hotplug notification is now ready for mainlining for the Linux kernel's Direct Rendering Manager subsystem and specific wiring up for the Intel driver.
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"NAX" Linux Security Being Worked On For Helping Fend Off Fileless Malware Attacks - Phoronix
Due to the growing threat posed by file-less malware attacks where malware code is executed from anonymous executable memory pages that aren't backed by data on the file-system, the "NAX" Linux security module has been seeing work recently for helping to protect against such scenarios.
The NAX Linux Security Module is around "no anonymous execution" of pages. The kernel security module prevents the creation of anonymous executable pages for processes by intercepting of mmap/mprotect system calls and handling them appropriately.
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Another Round Of Intel CET Patches, Still Working Toward Linux Kernel Integration - Phoronix
While Intel is normally very punctual in providing support for major new CPU features under Linux and often landing them well in advance of general hardware availability, their work around Control-flow Enforcement Technology (CET) has taken a long longer than normal and is still going through new rounds of code review to get accepted into the mainline Linux kernel.
Intel Tiger Lake SoCs with CET support have been available now for about one year and Intel CET work for Linux goes back to 2017. Intel Control-Flow Enforcement Technology aims to prevent ROP and COP/JOP style attacks through indirect branch tracking and a shadow stack. The compiler-side CET patches quickly landed but the Linux kernel support for this security feature has long been ongoing and as of yesterday is up to its 29th round of review.
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