CWE
200
Advisory Published
CVE Published
Updated

CVE-2018-3665: Infoleak

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 &amp; restore FPU state during task context switch. And second is to defer FPU state save &amp; 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: ------------- -&gt; <a href="https://git.kernel.org/linus//58122bf1d856a4ea9581d62a07c557d997d46a19">https://git.kernel.org/linus//58122bf1d856a4ea9581d62a07c557d997d46a19</a> References: ----------- -&gt; <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 SoftwareAffected VersionHow 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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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2018-3665?

    CVE-2018-3665 is a vulnerability in system software utilizing Lazy FP state restore technique on systems using Intel Core-based microprocessors.

  • What is the impact of CVE-2018-3665?

    CVE-2018-3665 may allow a local process to infer data from another process through a speculative execution side channel.

  • Which systems are affected by CVE-2018-3665?

    Systems using Intel Core-based microprocessors may be affected by CVE-2018-3665.

  • How severe is CVE-2018-3665?

    CVE-2018-3665 has a severity rating of medium (4 out of 10).

  • Are there any remedies available for CVE-2018-3665?

    Yes, there are remedial actions available for CVE-2018-3665. Please refer to the provided references for more information.

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