USN-6319-1: AMD Microcode vulnerability

Daniël Trujillo, Johannes Wikner, and Kaveh Razavi discovered that some AMD
processors utilising speculative execution and branch prediction may allow
unauthorised memory reads via a speculative side-channel attack. A local
attacker could use this to expose sensitive information, including kernel
memory.

amd attack channel information kernel local may memory microcode prediction processors sensitive sensitive information side-channel side-channel attack speculative execution unauthorised usn vulnerability