Are opaque basebands a national security risk?
Not all basebands have that much control. For example in the PinePhone, the ARM processor in baseband runs a proprietary Linux distro, but folks have replaced that with a fully free Linux distro. Unfortunately the proprietary software running on the Hexagon DSP hasn&#x27;t been replaced. I believe the interface between the two is fairly restricted though.<p><a href="https:&#x2F;&#x2F;github.com&#x2F;the-modem-distro&#x2F;pinephone_modem_sdk&#x2F;" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;the-modem-distro&#x2F;pinephone_modem_sdk&#x2F;</a><p>BTW, there are a number of videos at the CCC media archive about concrete vulnerabilities in baseband software:<p><a href="https:&#x2F;&#x2F;media.ccc.de&#x2F;search&#x2F;?q=baseband" rel="nofollow">https:&#x2F;&#x2F;media.ccc.de&#x2F;search&#x2F;?q=baseband</a>