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A security flaw leads Intel to disable DirectX 12 on its 4th Gen CPUs

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Intel has disabled DirectX 12 support on its 4th generation Haswell processors with onboard graphics due to a security vulnerability.  The vulnerability may allow escalation of privilege, or in other words, allow an unauthorized user to perform unwanted actions. 

It would seem to be a rather drastic action to disable DirectX 12 support completely, rather than issue an updated driver or patch, so it will be interesting to see if Intel makes further comment on the specifics of the vulnerability, or whether it has the potential to be exploited on other CPU generations.

Starting with driver, the disabled CPUs are those with Iris Pro 5200, Iris 5100, HD 5000, 4600, 4400 and 4200 graphics, along with 4th Generation Pentium and Celeron models. Furthermore, according to Tom’s Hardware, 4th Generation Ivy Bridge processors with the same Gen 7 GPU architecture are seemingly unaffected, at least for now.

Though most enthusiast gamers have moved on from Haswell processors, there are no doubt many 4000 series CPUs chugging along in desktops and particularly laptops worldwide. Users that do use the HD and Iris graphics of the time are not too likely to be running much DX12 content anyway so this may turn out be something of a nothing burger.  

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Still, it’s a bit of a black eye for Intel which has received some bad PR in recent years over security issues, notably the Spectre and Meltdown vulnerabilities.

In the meantime, Intel recommends that users downgrade the driver to version or older in order to run Direct X 12 content, and if Intel is willing to suggest that, maybe the problem isn’t all that serious at all.

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