From: Yu-cheng Yu > Sent: 27 April 2021 21:47 > > Control-flow Enforcement (CET) is a new Intel processor feature that blocks > return/jump-oriented programming attacks. Details are in "Intel 64 and > IA-32 Architectures Software Developer's Manual" [1]. ... Does this feature require that 'binary blobs' for out of tree drivers be compiled by a version of gcc that adds the ENDBRA instructions? If enabled for userspace, what happens if an old .so is dynamically loaded? Or do all userspace programs and libraries have to have been compiled with the ENDBRA instructions? David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)
