Hi,
> ​Can it be true? A version of gcc that runs on stretch that will
> compile the latest fancy spectre fixes etc?
with latest vanilla kernel 4.15.4 and updated gcc-6:
CVE-2017-5753 [bounds check bypass] aka 'Spectre Variant 1'
* Mitigated according to the /sys interface: YES (kernel confirms that
the mitigation is active)
* Kernel has array_index_mask_nospec: YES (1 occurence(s) found of 64
bits array_index_mask_nospec())
> STATUS: NOT VULNERABLE (Mitigation: __user pointer sanitization)
CVE-2017-5715 [branch target injection] aka 'Spectre Variant 2'
* Mitigated according to the /sys interface: YES (kernel confirms that
the mitigation is active)
* Mitigation 1
* Kernel is compiled with IBRS/IBPB support: NO
* Currently enabled features
* IBRS enabled for Kernel space: NO
* IBRS enabled for User space: NO
* IBPB enabled: NO
* Mitigation 2
* Kernel compiled with retpoline option: YES
* Kernel compiled with a retpoline-aware compiler: YES (kernel
reports full retpoline compilation)
* Retpoline enabled: NO
> STATUS: NOT VULNERABLE (Mitigation: Full generic retpoline)
CVE-2017-5754 [rogue data cache load] aka 'Meltdown' aka 'Variant 3'
* Mitigated according to the /sys interface: YES (kernel confirms that
the mitigation is active)
* Kernel supports Page Table Isolation (PTI): YES
* PTI enabled and active: YES
* Running as a Xen PV DomU: NO
> STATUS: NOT VULNERABLE (Mitigation: PTI)
grep bugs /proc/cpuinfo
bugs : cpu_meltdown spectre_v1 spectre_v2
model name : Intel(R) Core(TM) i5-4570 CPU @ 3.20GHz
stepping : 3
microcode : 0x22
--
mlnl
