Ubuntu Security Notice USN-6332-1

Ubuntu Security Notice 6332-1 - Daniel Moghimi discovered that some Intel Processors did not properly clear microarchitectural state after speculative execution of various instructions. A local unprivileged user could use this to obtain to sensitive information. William Zhao discovered that the Traffic Control subsystem in the Linux kernel did not properly handle network packet retransmission in certain situations. A local attacker could use this to cause a denial of service.

clear control daniel information intel intel processors kernel linux linux kernel local network network packet notice packet processors security security notice sensitive sensitive information speculative execution state subsystem traffic ubuntu usn