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USN-6319-1 Not scored

amd64-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.

Exploit probability Not scored
Published August 30, 2023
Required by Not available
Last source change June 25, 2026

02 / AFFECTED SOFTWARE

Affected packages

Ubuntu:20.04:LTS amd64-microcode

4 explicit affected versions

Ubuntu:22.04:LTS amd64-microcode

2 explicit affected versions

Ubuntu:Pro:16.04:LTS amd64-microcode

7 explicit affected versions

Ubuntu:Pro:18.04:LTS amd64-microcode

7 explicit affected versions

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities USN-6319-1

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.

View original source

05 / REFERENCES

Further evidence