First published: Fri Jun 01 2018(Updated: )
An information leakage flaw is found in the way Linux kernel saves and restores Floating Point Unit(FPU) state during task switch. There are two ways, one is to save & restore FPU state during task context switch. And second is to defer FPU state save & restore until an FP instruction is invoked by the current task. First is called as "Eager FPU Restore" and second is known as "Lazy FPU Restore" scheme. Linux kernel which follows the "Lazy FPU Restore" scheme is vulnerable to the FPU state information leakage issue. An unprivileged local attacker could use this flaw to read FPU state bits by conducting targeted cache side-channel attacks, similar to Meltdown attack disclosed earlier this year. Upstream fix: ------------- -> <a href="https://git.kernel.org/linus//58122bf1d856a4ea9581d62a07c557d997d46a19">https://git.kernel.org/linus//58122bf1d856a4ea9581d62a07c557d997d46a19</a> References: ----------- -> <a href="http://www.openwall.com/lists/oss-security/2018/06/13/7">http://www.openwall.com/lists/oss-security/2018/06/13/7</a>
Credit: Julian Stecklina Amazon GermanyThomas Prescher Cyberus Technology GmbHZdenek Sojka SYSGO AG Colin Percival secure@intel.com
Affected Software | Affected Version | How to fix |
---|---|---|
macOS High Sierra | <10.13.6 | 10.13.6 |
macOS High Sierra | ||
Apple El Capitan | ||
Intel Core i3 | =330e | |
Intel Core i3 | =330m | |
Intel Core i3 | =330um | |
Intel Core i3 | =350m | |
Intel Core i3 | =370m | |
Intel Core i3 | =380m | |
Intel Core i3 | =380um | |
Intel Core i3 | =390m | |
Intel Core i3 | =530 | |
Intel Core i3 | =540 | |
Intel Core i3 | =550 | |
Intel Core i3 | =560 | |
Intel Core i3 | =2100 | |
Intel Core i3 | =2100t | |
Intel Core i3 | =2102 | |
Intel Core i3 | =2105 | |
Intel Core i3 | =2115c | |
Intel Core i3 | =2120 | |
Intel Core i3 | =2120t | |
Intel Core i3 | =2125 | |
Intel Core i3 | =2130 | |
Intel Core i3 | =2310e | |
Intel Core i3 | =2310m | |
Intel Core i3 | =2312m | |
Intel Core i3 | =2328m | |
Intel Core i3 | =2330e | |
Intel Core i3 | =2330m | |
Intel Core i3 | =2340ue | |
Intel Core i3 | =2348m | |
Intel Core i3 | =2350m | |
Intel Core i3 | =2357m | |
Intel Core i3 | =2365m | |
Intel Core i3 | =2367m | |
Intel Core i3 | =2370m | |
Intel Core i3 | =2375m | |
Intel Core i3 | =2377m | |
Intel Core i3 | =3110m | |
Intel Core i3 | =3115c | |
Intel Core i3 | =3120m | |
Intel Core i3 | =3120me | |
Intel Core i3 | =3130m | |
Intel Core i3 | =3210 | |
Intel Core i3 | =3217u | |
Intel Core i3 | =3217ue | |
Intel Core i3 | =3220 | |
Intel Core i3 | =3220t | |
Intel Core i3 | =3225 | |
Intel Core i3 | =3227u | |
Intel Core i3 | =3229y | |
Intel Core i3 | =3240 | |
Intel Core i3 | =3240t | |
Intel Core i3 | =3245 | |
Intel Core i3 | =3250 | |
Intel Core i3 | =3250t | |
Intel Core i3 | =4000m | |
Intel Core i3 | =4005u | |
Intel Core i3 | =4010u | |
Intel Core i3 | =4010y | |
Intel Core i3 | =4012y | |
Intel Core i3 | =4020y | |
Intel Core i3 | =4025u | |
Intel Core i3 | =4030u | |
Intel Core i3 | =4030y | |
Intel Core i3 | =4100e | |
Intel Core i3 | =4100m | |
Intel Core i3 | =4100u | |
Intel Core i3 | =4102e | |
Intel Core i3 | =4110e | |
Intel Core i3 | =4110m | |
Intel Core i3 | =4112e | |
Intel Core i3 | =4120u | |
Intel Core i3 | =4130 | |
Intel Core i3 | =4130t | |
Intel Core i3 | =4150 | |
Intel Core i3 | =4150t | |
Intel Core i3 | =4158u | |
Intel Core i3 | =4160 | |
Intel Core i3 | =4160t | |
Intel Core i3 | =4170 | |
Intel Core i3 | =4170t | |
Intel Core i3 | =4330 | |
Intel Core i3 | =4330t | |
Intel Core i3 | =4330te | |
Intel Core i3 | =4340 | |
Intel Core i3 | =4340te | |
Intel Core i3 | =4350 | |
Intel Core i3 | =4350t | |
Intel Core i3 | =4360 | |
Intel Core i3 | =4360t | |
Intel Core i3 | =4370 | |
Intel Core i3 | =4370t | |
Intel Core i3 | =5005u | |
Intel Core i3 | =5010u | |
Intel Core i3 | =5015u | |
Intel Core i3 | =5020u | |
Intel Core i3 | =5157u | |
Intel Core i3 | =6006u | |
Intel Core i3 | =6098p | |
Intel Core i3 | =6100 | |
Intel Core i3 | =6100e | |
Intel Core i3 | =6100h | |
Intel Core i3 | =6100t | |
Intel Core i3 | =6100te | |
Intel Core i3 | =6100u | |
Intel Core i3 | =6102e | |
Intel Core i3 | =6157u | |
Intel Core i3 | =6167u | |
Intel Core i3 | =6300 | |
Intel Core i3 | =6300t | |
Intel Core i3 | =6320 | |
Intel Core i3 | =8100 | |
Intel Core i3 | =8350k | |
Intel Core i5 Processors | =430m | |
Intel Core i5 Processors | =430um | |
Intel Core i5 Processors | =450m | |
Intel Core i5 Processors | =460m | |
Intel Core i5 Processors | =470um | |
Intel Core i5 Processors | =480m | |
Intel Core i5 Processors | =520e | |
Intel Core i5 Processors | =520m | |
Intel Core i5 Processors | =520um | |
Intel Core i5 Processors | =540m | |
Intel Core i5 Processors | =540um | |
Intel Core i5 Processors | =560m | |
Intel Core i5 Processors | =560um | |
Intel Core i5 Processors | =580m | |
Intel Core i5 Processors | =650 | |
Intel Core i5 Processors | =655k | |
Intel Core i5 Processors | =660 | |
Intel Core i5 Processors | =661 | |
Intel Core i5 Processors | =670 | |
Intel Core i5 Processors | =680 | |
Intel Core i5 Processors | =750 | |
Intel Core i5 Processors | =750s | |
Intel Core i5 Processors | =760 | |
Intel Core i5 Processors | =2300 | |
Intel Core i5 Processors | =2310 | |
Intel Core i5 Processors | =2320 | |
Intel Core i5 Processors | =2380p | |
Intel Core i5 Processors | =2390t | |
Intel Core i5 Processors | =2400 | |
Intel Core i5 Processors | =2400s | |
Intel Core i5 Processors | =2405s | |
Intel Core i5 Processors | =2410m | |
Intel Core i5 Processors | =2430m | |
Intel Core i5 Processors | =2435m | |
Intel Core i5 Processors | =2450m | |
Intel Core i5 Processors | =2450p | |
Intel Core i5 Processors | =2467m | |
Intel Core i5 Processors | =2500 | |
Intel Core i5 Processors | =2500k | |
Intel Core i5 Processors | =2500s | |
Intel Core i5 Processors | =2500t | |
Intel Core i5 Processors | =2510e | |
Intel Core i5 Processors | =2515e | |
Intel Core i5 Processors | =2520m | |
Intel Core i5 Processors | =2537m | |
Intel Core i5 Processors | =2540m | |
Intel Core i5 Processors | =2550k | |
Intel Core i5 Processors | =2557m | |
Intel Core i5 Processors | =3210m | |
Intel Core i5 Processors | =3230m | |
Intel Core i5 Processors | =3317u | |
Intel Core i5 Processors | =3320m | |
Intel Core i5 Processors | =3330 | |
Intel Core i5 Processors | =3330s | |
Intel Core i5 Processors | =3337u | |
Intel Core i5 Processors | =3339y | |
Intel Core i5 Processors | =3340 | |
Intel Core i5 Processors | =3340m | |
Intel Core i5 Processors | =3340s | |
Intel Core i5 Processors | =3350p | |
Intel Core i5 Processors | =3360m | |
Intel Core i5 Processors | =3380m | |
Intel Core i5 Processors | =3427u | |
Intel Core i5 Processors | =3437u | |
Intel Core i5 Processors | =3439y | |
Intel Core i5 Processors | =3450 | |
Intel Core i5 Processors | =3450s | |
Intel Core i5 Processors | =3470 | |
Intel Core i5 Processors | =3470s | |
Intel Core i5 Processors | =3470t | |
Intel Core i5 Processors | =3475s | |
Intel Core i5 Processors | =3550 | |
Intel Core i5 Processors | =3550s | |
Intel Core i5 Processors | =3570 | |
Intel Core i5 Processors | =3570k | |
Intel Core i5 Processors | =3570s | |
Intel Core i5 Processors | =3570t | |
Intel Core i5 Processors | =3610me | |
Intel Core i5 Processors | =4200h | |
Intel Core i5 Processors | =4200m | |
Intel Core i5 Processors | =4200u | |
Intel Core i5 Processors | =4200y | |
Intel Core i5 Processors | =4202y | |
Intel Core i5 Processors | =4210h | |
Intel Core i5 Processors | =4210m | |
Intel Core i5 Processors | =4210u | |
Intel Core i5 Processors | =4210y | |
Intel Core i5 Processors | =4220y | |
Intel Core i5 Processors | =4250u | |
Intel Core i5 Processors | =4258u | |
Intel Core i5 Processors | =4260u | |
Intel Core i5 Processors | =4278u | |
Intel Core i5 Processors | =4288u | |
Intel Core i5 Processors | =4300m | |
Intel Core i5 Processors | =4300u | |
Intel Core i5 Processors | =4300y | |
Intel Core i5 Processors | =4302y | |
Intel Core i5 Processors | =4308u | |
Intel Core i5 Processors | =4310m | |
Intel Core i5 Processors | =4310u | |
Intel Core i5 Processors | =4330m | |
Intel Core i5 Processors | =4340m | |
Intel Core i5 Processors | =4350u | |
Intel Core i5 Processors | =4360u | |
Intel Core i5 Processors | =4400e | |
Intel Core i5 Processors | =4402e | |
Intel Core i5 Processors | =4402ec | |
Intel Core i5 Processors | =4410e | |
Intel Core i5 Processors | =4422e | |
Intel Core i5 Processors | =4430 | |
Intel Core i5 Processors | =4430s | |
Intel Core i5 Processors | =4440 | |
Intel Core i5 Processors | =4440s | |
Intel Core i5 Processors | =4460 | |
Intel Core i5 Processors | =4460s | |
Intel Core i5 Processors | =4460t | |
Intel Core i5 Processors | =4570 | |
Intel Core i5 Processors | =4570r | |
Intel Core i5 Processors | =4570s | |
Intel Core i5 Processors | =4570t | |
Intel Core i5 Processors | =4570te | |
Intel Core i5 Processors | =4590 | |
Intel Core i5 Processors | =4590s | |
Intel Core i5 Processors | =4590t | |
Intel Core i5 Processors | =4670 | |
Intel Core i5 Processors | =4670k | |
Intel Core i5 Processors | =4670r | |
Intel Core i5 Processors | =4670s | |
Intel Core i5 Processors | =4670t | |
Intel Core i5 Processors | =4690 | |
Intel Core i5 Processors | =4690k | |
Intel Core i5 Processors | =4690s | |
Intel Core i5 Processors | =4690t | |
Intel Core i5 Processors | =5200u | |
Intel Core i5 Processors | =5250u | |
Intel Core i5 Processors | =5257u | |
Intel Core i5 Processors | =5287u | |
Intel Core i5 Processors | =5300u | |
Intel Core i5 Processors | =5350h | |
Intel Core i5 Processors | =5350u | |
Intel Core i5 Processors | =5575r | |
Intel Core i5 Processors | =5675c | |
Intel Core i5 Processors | =5675r | |
Intel Core i5 Processors | =6200u | |
Intel Core i5 Processors | =6260u | |
Intel Core i5 Processors | =6267u | |
Intel Core i5 Processors | =6287u | |
Intel Core i5 Processors | =6300hq | |
Intel Core i5 Processors | =6300u | |
Intel Core i5 Processors | =6350hq | |
Intel Core i5 Processors | =6360u | |
Intel Core i5 Processors | =6400 | |
Intel Core i5 Processors | =6400t | |
Intel Core i5 Processors | =6402p | |
Intel Core i5 Processors | =6440eq | |
Intel Core i5 Processors | =6440hq | |
Intel Core i5 Processors | =6442eq | |
Intel Core i5 Processors | =6500 | |
Intel Core i5 Processors | =6500t | |
Intel Core i5 Processors | =6500te | |
Intel Core i5 Processors | =6585r | |
Intel Core i5 Processors | =6600 | |
Intel Core i5 Processors | =6600k | |
Intel Core i5 Processors | =6600t | |
Intel Core i5 Processors | =6685r | |
Intel Core i5 Processors | =8250u | |
Intel Core i5 Processors | =8350u | |
Intel Core i5 Processors | =8400 | |
Intel Core i5 Processors | =8600k | |
Intel CPU Cores | =7y75 | |
Intel CPU Cores | =610e | |
Intel CPU Cores | =620le | |
Intel CPU Cores | =620lm | |
Intel CPU Cores | =620m | |
Intel CPU Cores | =620ue | |
Intel CPU Cores | =620um | |
Intel CPU Cores | =640lm | |
Intel CPU Cores | =640m | |
Intel CPU Cores | =640um | |
Intel CPU Cores | =660lm | |
Intel CPU Cores | =660ue | |
Intel CPU Cores | =660um | |
Intel CPU Cores | =680um | |
Intel CPU Cores | =720qm | |
Intel CPU Cores | =740qm | |
Intel CPU Cores | =820qm | |
Intel CPU Cores | =840qm | |
Intel CPU Cores | =860 | |
Intel CPU Cores | =860s | |
Intel CPU Cores | =870 | |
Intel CPU Cores | =870s | |
Intel CPU Cores | =875k | |
Intel CPU Cores | =880 | |
Intel CPU Cores | =920 | |
Intel CPU Cores | =920xm | |
Intel CPU Cores | =930 | |
Intel CPU Cores | =940 | |
Intel CPU Cores | =940xm | |
Intel CPU Cores | =950 | |
Intel CPU Cores | =960 | |
Intel CPU Cores | =965 | |
Intel CPU Cores | =970 | |
Intel CPU Cores | =975 | |
Intel CPU Cores | =980 | |
Intel CPU Cores | =980x | |
Intel CPU Cores | =990x | |
Intel CPU Cores | =2600 | |
Intel CPU Cores | =2600k | |
Intel CPU Cores | =2600s | |
Intel CPU Cores | =2610ue | |
Intel CPU Cores | =2617m | |
Intel CPU Cores | =2620m | |
Intel CPU Cores | =2629m | |
Intel CPU Cores | =2630qm | |
Intel CPU Cores | =2635qm | |
Intel CPU Cores | =2637m | |
Intel CPU Cores | =2640m | |
Intel CPU Cores | =2649m | |
Intel CPU Cores | =2655le | |
Intel CPU Cores | =2657m | |
Intel CPU Cores | =2670qm | |
Intel CPU Cores | =2675qm | |
Intel CPU Cores | =2677m | |
Intel CPU Cores | =2700k | |
Intel CPU Cores | =2710qe | |
Intel CPU Cores | =2715qe | |
Intel CPU Cores | =2720qm | |
Intel CPU Cores | =2760qm | |
Intel CPU Cores | =2820qm | |
Intel CPU Cores | =2860qm | |
Intel CPU Cores | =2920xm | |
Intel CPU Cores | =2960xm | |
Intel CPU Cores | =3517u | |
Intel CPU Cores | =3517ue | |
Intel CPU Cores | =3520m | |
Intel CPU Cores | =3537u | |
Intel CPU Cores | =3540m | |
Intel CPU Cores | =3555le | |
Intel CPU Cores | =3610qe | |
Intel CPU Cores | =3610qm | |
Intel CPU Cores | =3612qe | |
Intel CPU Cores | =3612qm | |
Intel CPU Cores | =3615qe | |
Intel CPU Cores | =3615qm | |
Intel CPU Cores | =3630qm | |
Intel CPU Cores | =3632qm | |
Intel CPU Cores | =3635qm | |
Intel CPU Cores | =3667u | |
Intel CPU Cores | =3687u | |
Intel CPU Cores | =3689y | |
Intel CPU Cores | =3720qm | |
Intel CPU Cores | =3740qm | |
Intel CPU Cores | =3770 | |
Intel CPU Cores | =3770k | |
Intel CPU Cores | =3770s | |
Intel CPU Cores | =3770t | |
Intel CPU Cores | =3820qm | |
Intel CPU Cores | =3840qm | |
Intel CPU Cores | =4500u | |
Intel CPU Cores | =4510u | |
Intel CPU Cores | =4550u | |
Intel CPU Cores | =4558u | |
Intel CPU Cores | =4578u | |
Intel CPU Cores | =4600m | |
Intel CPU Cores | =4600u | |
Intel CPU Cores | =4610m | |
Intel CPU Cores | =4610y | |
Intel CPU Cores | =4650u | |
Intel CPU Cores | =4700ec | |
Intel CPU Cores | =4700eq | |
Intel CPU Cores | =4700hq | |
Intel CPU Cores | =4700mq | |
Intel CPU Cores | =4702ec | |
Intel CPU Cores | =4702hq | |
Intel CPU Cores | =4702mq | |
Intel CPU Cores | =4710hq | |
Intel CPU Cores | =4710mq | |
Intel CPU Cores | =4712hq | |
Intel CPU Cores | =4712mq | |
Intel CPU Cores | =4720hq | |
Intel CPU Cores | =4722hq | |
Intel CPU Cores | =4750hq | |
Intel CPU Cores | =4760hq | |
Intel CPU Cores | =4765t | |
Intel CPU Cores | =4770 | |
Intel CPU Cores | =4770hq | |
Intel CPU Cores | =4770k | |
Intel CPU Cores | =4770r | |
Intel CPU Cores | =4770s | |
Intel CPU Cores | =4770t | |
Intel CPU Cores | =4770te | |
Intel CPU Cores | =4771 | |
Intel CPU Cores | =4785t | |
Intel CPU Cores | =4790 | |
Intel CPU Cores | =4790k | |
Intel CPU Cores | =4790s | |
Intel CPU Cores | =4790t | |
Intel CPU Cores | =4800mq | |
Intel CPU Cores | =4810mq | |
Intel CPU Cores | =4850hq | |
Intel CPU Cores | =4860hq | |
Intel CPU Cores | =4870hq | |
Intel CPU Cores | =4900mq | |
Intel CPU Cores | =4910mq | |
Intel CPU Cores | =4950hq | |
Intel CPU Cores | =4960hq | |
Intel CPU Cores | =4980hq | |
Intel CPU Cores | =5500u | |
Intel CPU Cores | =5550u | |
Intel CPU Cores | =5557u | |
Intel CPU Cores | =5600u | |
Intel CPU Cores | =5650u | |
Intel CPU Cores | =5700eq | |
Intel CPU Cores | =5700hq | |
Intel CPU Cores | =5750hq | |
Intel CPU Cores | =5775c | |
Intel CPU Cores | =5775r | |
Intel CPU Cores | =5850eq | |
Intel CPU Cores | =5850hq | |
Intel CPU Cores | =5950hq | |
Intel CPU Cores | =7500u | |
Intel CPU Cores | =7560u | |
Intel CPU Cores | =7567u | |
Intel CPU Cores | =7600u | |
Intel CPU Cores | =7660u | |
Intel CPU Cores | =7700 | |
Intel CPU Cores | =7700hq | |
Intel CPU Cores | =7700k | |
Intel CPU Cores | =7700t | |
Intel CPU Cores | =7820eq | |
Intel CPU Cores | =7820hk | |
Intel CPU Cores | =7820hq | |
Intel CPU Cores | =7920hq | |
Intel CPU Cores | =8550u | |
Intel CPU Cores | =8650u | |
Intel CPU Cores | =8700 | |
Intel CPU Cores | =8700k | |
Intel CPU Cores | =5y10 | |
Intel CPU Cores | =5y10a | |
Intel CPU Cores | =5y10c | |
Intel CPU Cores | =5y31 | |
Intel CPU Cores | =5y51 | |
Intel CPU Cores | =5y70 | |
Intel CPU Cores | =5y71 | |
Intel Core M | =6y30 | |
Intel Core M | =7y30 | |
Intel Core M | =7y32 | |
Intel Core M | =6y54 | |
Intel Core M | =6y57 | |
Intel Core M | =6y75 | |
XenServer | =7.0 | |
XenServer | =7.1 | |
XenServer | =7.3 | |
XenServer | =7.4 | |
XenServer | =7.5 | |
Ubuntu | =12.04 | |
Ubuntu | =14.04 | |
Ubuntu | =16.04 | |
Debian Linux | =8.0 | |
Debian Linux | =9.0 | |
FreeBSD Kernel | =11.0 | |
FreeBSD Kernel | =11.1 | |
FreeBSD Kernel | =11.2 | |
Red Hat Enterprise Linux | =6.0 | |
Red Hat Enterprise Linux | =7.0 | |
Red Hat Enterprise Linux Desktop | =6.0 | |
Red Hat Enterprise Linux Desktop | =7.0 | |
Red Hat Enterprise Linux Workstation | =6.0 | |
Red Hat Enterprise Linux Workstation | =7.0 | |
debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.128-1 6.12.20-1 6.12.21-1 | |
debian/xen | 4.14.6-1 4.14.5+94-ge49571868d-1 4.17.5+23-ga4e5191dc0-1+deb12u1 4.17.5+23-ga4e5191dc0-1 4.20.0-1 |
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(Found alongside the following vulnerabilities)
CVE-2018-3665 is a vulnerability in system software utilizing Lazy FP state restore technique on systems using Intel Core-based microprocessors.
CVE-2018-3665 may allow a local process to infer data from another process through a speculative execution side channel.
Systems using Intel Core-based microprocessors may be affected by CVE-2018-3665.
CVE-2018-3665 has a severity rating of medium (4 out of 10).
Yes, there are remedial actions available for CVE-2018-3665. Please refer to the provided references for more information.