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In other words - a feature designed to bolster security has actually compromised it.
The flaw, dubbed CacheWarp, is tracked as CVE-2023-20592 and at press time didnt have a severity score.
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Soon after the paper was published, AMD released a security advisory acknowledging the flaw.
While EPYC Processors generations 1-3 were affected, its just the third generation that is getting a fix.
This fix is a hot-loadable microcode patch and an updated firmware image.
Users are advised to address the issue immediately.
AMD says the patch will not affect the devices performance.
ViaBleepingComputer
