USN-7077-1: AMD Microcode vulnerability
Publication date
21 October 2024
Overview
AMD processors may allow a privileged local attacker to further escalate their privileged and execute arbitrary code within the processor's firmware layer.
Packages
- amd64-microcode - Platform firmware and microcode for AMD CPUs and SoCs
Details
Enrique Nissim and Krzysztof Okupski discovered that some AMD processors
did not properly restrict access to the System Management Mode (SMM)
configuration when the SMM Lock was enabled. A privileged local attacker
could possibly use this issue to further escalate their privileges and
execute arbitrary code within the processor's firmware layer.
Enrique Nissim and Krzysztof Okupski discovered that some AMD processors
did not properly restrict access to the System Management Mode (SMM)
configuration when the SMM Lock was enabled. A privileged local attacker
could possibly use this issue to further escalate their privileges and
execute arbitrary code within the processor's firmware layer.
Update instructions
After a standard system update you need to reboot your computer to make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 24.10 oracular | amd64-microcode – 3.20240116.2+nmu1ubuntu1.1 | ||
| 24.04 noble | amd64-microcode – 3.20231019.1ubuntu2.1 | ||
| 22.04 jammy | amd64-microcode – 3.20191218.1ubuntu2.3 | ||
| 20.04 focal | amd64-microcode – 3.20191218.1ubuntu1.3 | ||
| 18.04 bionic | amd64-microcode – 3.20191021.1+really3.20181128.1~ubuntu0.18.04.1+esm3 | ||
| 16.04 xenial | amd64-microcode – 3.20191021.1+really3.20180524.1~ubuntu0.16.04.2+esm3 | ||
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