News for hackers. Stuff that matters.

A comment on Avoid speculative indirect calls in kernel. Parent comment

Re:Avoid speculative indirect calls in kernel by doikor on Thursday January 04, 2018 @11:20AM (#16071513)
Amd claims that two of the three spectre attacks don't work on their hardware and the last one (variant one) is fixable with negligible performance impact.

https://www.amd.com/en/corporate/speculative-execution

[ Parent | on HN ]
Re:Avoid speculative indirect calls in kernel by m_mueller on Thursday January 04, 2018 @11:40AM (#16071681)
I still don‘t get how variant 1 is fixable with negligible impact. Do we have any details on this as of now?
[ Parent | on HN ]
Re:Avoid speculative indirect calls in kernel by gbacon on Thursday January 04, 2018 @05:41PM (#16074790)
A bit of PR spin in Variant 2:

Differences in AMD architecture mean there is a near zero risk of exploitation of this variant. Vulnerability to Variant 2 has not been demonstrated on AMD processors to date.

Near-zero is not zero.

[ Parent | on HN ]
Re:Avoid speculative indirect calls in kernel by StavrosK on Thursday January 04, 2018 @11:28AM (#16071579)
That's fantastic. I know whom my next CPU will be made by.
[ Parent | on HN ]