USN-7077-1: AMD Microcode vulnerability

21 October 2024

AMD processors may allow a privileged local attacker to further escalate their privileged and execute arbitrary code within the processor's firmware layer.

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Releases

Packages

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.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 24.10
Ubuntu 24.04
Ubuntu 22.04
Ubuntu 20.04
Ubuntu 18.04
Ubuntu 16.04

After a standard system update you need to reboot your computer to make
all the necessary changes.

References

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Further reading