October 1, 2022

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AMD and Intel processors both find security flaw fixes cost up to 28% performance loss

2 min read

AMD and Intel processors both find security flaw fixes cost up to 28% performance loss



AMD and Intel processors both find security flaw fixes cost up to 28% performance loss.

In the past few years, two widespread security vulnerabilities, Spectre and Meltdown, were discovered around the world, which greatly affected processors such as AMD, Intel, and ARM.

The server was found to have a security vulnerability Retbleed, which is somewhat similar to the Spectre vulnerability. If it is fixed, it will lose 12% to 28% of CPU performance.

The Retbleed vulnerability, discovered by researchers at the University of Zurich in Switzerland, is also a flaw in the speculative execution mechanism of a processor that allows data to be retrieved from the kernel to escalate privileges and steal passwords and other confidential data.

Both AMD and Intel processors will be affected. The Retbleed vulnerability number on the AMD platform is CVE-2022-29900, and the Intel platform number is CVE-2022-29901.

According to the security personnel’s demonstration, it takes 28 minutes to obtain the root password on the Intel platform. , and only 6 minutes on AMD processors.

As with the previous Spectre bug, fixing the Retbleed bug comes at a cost, causing processor performance degradation ranging from 12% to 28%.

The processors affected by Retbleed are not too new. Intel’s side is affected by the 6th to 8th generation Core, mainly the skylake architecture.

AMD’s side is mainly Zen, Zen+ to Zen2, Zen3 architecture products, and Intel mentioned that The Windows system is not affected, and measures have been taken to prevent it.



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