Update: It looks like this will not be on by default, even for the affected cpus: https://sourceware.org/ml/libc-alpha/2015-12/msg00262.html …https://twitter.com/RichFelker/status/675360594346819584 …
@CopperheadSec @canadianbryan Stack is not an issue because only executable memory is affected; the bug is 32-bit branch prediction buffers.
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@RichFelker@canadianbryan Ah, so the executable base would definitely matter with PIE but without it the base is likely in the low range. -
@RichFelker@canadianbryan Makes more sense that they only care about mmap then (libs) although glibc is still the wrong place to do it.
End of conversation
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