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Microsoft Windows 11 fixes an AMD processor Spectre Variant 2 vulnerability

Microsoft yesterday released security patch updates for Windows 11, Windows 10, and Windows 8.1 and Windows 7.

According to reports, the latest November patch fixes a Spectre Variant 2 vulnerability, including AMD CPU vulnerability codenamed “CVE-2022-23824”, which affects almost all AMD Ryzen, EPYC and Athlon desktops and laptops and server processors, though Ryzen 7000-series chips are not affected.

In a report published earlier today, AMD described the new security flaw:

"Bulletin Number: AMD-SB-1040

Potential Impact: Information Disclosure

Severity: Moderate

AMD is aware of a potential vulnerability affecting AMD CPUs in which the operating system relies on IBPB to flush the return address predictor. This could allow CVE-2017-5715 (formerly known as Spectre Variant 2) RET prediction-based attacks to flush the return address predictor if the OS relies on IBPB without using additional software mitigations.

CVE-2022-23824

IBPB cannot prevent IBPB pre-branch target designation from returning branch predictions, leading to potential disclosure."

The affected products include:

desktop
AMD Athlon™ X4 Processor

AMD Ryzen™ Threadripper™ PRO processors

2nd Generation AMD Ryzen™ Threadripper™ Processors

3rd Generation AMD Ryzen™ Threadripper™ Processors

7th Gen AMD A-Series APUs

AMD Ryzen™ 2000 Series Desktop Processors

AMD Ryzen™ 3000 Series Desktop Processors

AMD Ryzen™ 4000 Series Desktop Processors with Radeon™ Graphics

move
AMD Ryzen 2000 Series Mobile Processors

AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics

AMD Ryzen™ 3000 Series Mobile Processors or 2nd Generation AMD Ryzen™ Mobile Processors with Radeon™ Graphics

AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics

AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics

Chromebooks
AMD Athlon™ Mobile Processors with Radeon™ Graphics

server
1st Generation AMD EPYC Processor

2nd Generation AMD EPYC Processor

3rd Generation AMD EPYC Processors

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Threza Gabriel
Threza Gabrielhttps://www.techgoing.com
TechGoing is a global tech media to brings you the latest technology stories, including smartphones, electric vehicles, smart home devices, gaming, wearable gadgets, and all tech trending.
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