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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of USN-6319-1?
The severity of USN-6319-1 is high.
How does the AMD Microcode vulnerability affect Ubuntu 23.04?
Ubuntu 23.04 is affected by the AMD Microcode vulnerability.
How can a local attacker exploit this vulnerability?
A local attacker can exploit this vulnerability by conducting a speculative side-channel attack to expose sensitive information, including kernel memory.
What is the remedy for the AMD Microcode vulnerability in Ubuntu 18.04?
The remedy for the AMD Microcode vulnerability in Ubuntu 18.04 is version 3.20191021.1+really3.20180524.1~ubuntu0.16.04.2+esm2 of the amd64-microcode package.
Where can I find more information about USN-6319-1?
You can find more information about USN-6319-1 on the Ubuntu Security website.