Re: CVE-2017-5715
On 3/23/22 15:58, piorunz wrote:
> On 12/03/2022 09:48, Georgi Naplatanov wrote:
>
>> spectre-meltdown-checker script reports that my system is vulnerable to
>> CVE-2017-5715. My CPU is Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz
>>
>> Is this normal?
>>
>> In the past all checks from spectre-meltdown-checker were green (my
>> system was not vulnerable).
>
> Is your vulnerability shown as follows?
>
> CVE-2017-5715 aka 'Spectre Variant 2, branch target injection'
> * Mitigated according to the /sys interface: YES (Mitigation:
> Retpolines, IBPB: conditional, IBRS_FW, STIBP: conditional, RSB filling)
> * Mitigation 1
> * Kernel is compiled with IBRS support: YES
> * IBRS enabled and active: YES (for firmware code only)
> * Kernel is compiled with IBPB support: YES
> * IBPB enabled and active: YES
> * Mitigation 2
> * Kernel has branch predictor hardening (arm): NO
> * Kernel compiled with retpoline option: YES
> * Kernel supports RSB filling: YES
>> STATUS: VULNERABLE (IBRS+IBPB or retpoline+IBPB+RSB filling, is
> needed to mitigate the vulnerability)
>
Yes, it seems the same but to avoid possible confusion/mistake I'm
pasting the output below:
CVE-2017-5715 aka 'Spectre Variant 2, branch target injection'
* Mitigated according to the /sys interface: YES (Mitigation:
Retpolines, IBPB: conditional, IBRS_FW, STIBP: conditional, RSB filling)
* Mitigation 1
* Kernel is compiled with IBRS support: YES
* IBRS enabled and active: YES (for firmware code only)
* Kernel is compiled with IBPB support: YES
* IBPB enabled and active: YES
* Mitigation 2
* Kernel has branch predictor hardening (arm): NO
* Kernel compiled with retpoline option: YES
* Kernel supports RSB filling: YES
> STATUS: VULNERABLE (IBRS+IBPB or retpoline+IBPB+RSB filling, is
needed to mitigate the vulnerability)
Reply to: