AMD hit by double class action suit over Spectre vulnerabilites

Windows 10 users warned about fake Meltdown and Spectre updates 0

Both Intel and AMD stock dropped shortly after they announced that their chips are vulnerable to Meltdown and Spectre. Thankfully, Intel VP Navin Shenoy said that they're close to identifying the problem's root issue.

"The January 2018 Critical Patch Update provides fixes for certain Oracle products for the Spectre (CVE-2017-5753, CVE-2017-5715) and Meltdown (CVE-2017-5754) Intel processor vulnerabilities", the vendor said.

As part of its quest to ensure "transparency" after initially insisting that the fixes for design flaws in its chips wouldn't cause problems, Intel acknowledged late Wednesday that those fixes were causing additional problems. Now, Intel says its internal testing confirms the reboots also impacts systems powered by its newer Ivy Bridge, Sandy Bridge, Skylake and Kaby Lake chips.

Intel confirms in a blog post that it has released firmware updates for 90 percent of its CPUs introduced in the past five years.

Meltdown and Spectre vulnerabilities have thrown much of the technology sector into a panic, representing serious weaknesses that can be exploited by hackers to access sensitive information on usersĀ“ devices. And unfortunately, Intel just confirmed that its firmware fix for Spectre might do the same thing on newer machines that pack Kaby Lake and Skylake processors.

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The company also claimed that its AMD CPUs, mostly from the Ryzen generation are not susceptible to the security flaws.

Microsoft recently warned that those running Haswell CPUs or older, and those with older versions Windows, will notice performance impacts from the Spectre patch. "Generally speaking, the workloads that incorporate a larger number of user/kernel privilege changes and spend a significant amount of time in privileged mode will be more adversely impacted".

On one benchmark at full CPU utilization, Intel found an 18 percent decrease in throughput performance, while on a 73/30 read/write model there was only a two percent hit on throughput performance.

On Jan. 10, I provided initial performance data results for client systems and today I have initial results to share on the data center side.

Google last week urged the whole industry to adopt Retpoline because it mitigated the attack but had nearly no negative performance impact on current hardware.

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