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Arm CPUs Impacted by Straight-Line Speculation (SLS) Vulnerability

Pickles von Brine
By Pickles von Brine
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Today, a new side-channel vulnerability was discovered, and on Arm CPUs. Called the Straight-Line Speculation (SLS), the speculation bug is haunting all of Arm Armv-A based processors. This represents a wide range of devices being powered by these CPUs, so Arm is taking action to prevent it. The way SLS works is that whenever there is a change in instruction flow, the CPU just starts processing instructions found linearly in memory, instead of changing the path of flow. This action is resulting in a new SLS vulnerability marked as CVE-2020-13844. The vulnerability was discovered by Google SafeSide project last year and they have reported it to Arm. In the meantime, Arm was working on a fix and they already send them upstream to important operating systems and firmware suppliers so it can be resolved. Arm says that the chances of this attack are low, however, they can not be dismissed.

 

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Intel got hit with one (a two in one) again and now ARM got hit. Honestly it really isn't surprising you won't find a vulnerability, it is just a matter of when. This one doesn't seem to have a rating, so it will be interesting at what kind of severity rating it gets. Plus, what kind of complexity are we talking about to exploit it? Either way, it is good to see Google was the one who found it and not some shady third party. 

Be sure to @Pickles von Brine if you want me to see your reply!

Stopping by to praise the all mighty jar Lord pickles... * drinks from a chalice of holy pickle juice and tossed dill over shoulder* ~ @WarDance
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Does Arm have the Armour to defend against more of these? maybe not

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Dont worry, I hate the pun too

 

 

 

 

 

 

 

 

 

:P

 

 

 

✨FNIGE✨

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Straight-line speculation, I wonder if irregular speculation will be the one they need. I couldn't decode what my female friends or cats in the neighbourhood will do next so I think women and felines will be a great source to model after /s

CPU: i7-2600K 4751MHz 1.44V (software) --> 1.47V at the back of the socket Motherboard: Asrock Z77 Extreme4 (BCLK: 103.3MHz) CPU Cooler: Noctua NH-D15 RAM: Adata XPG 2x8GB DDR3 (XMP: 2133MHz 10-11-11-30 CR2, custom: 2203MHz 10-11-10-26 CR1 tRFC:230 tREFI:14000) GPU: Asus GTX 1070 Dual (Super Jetstream vbios, +70(2025-2088MHz)/+400(8.8Gbps)) SSD: Samsung 840 Pro 256GB (main boot drive), Transcend SSD370 128GB PSU: Seasonic X-660 80+ Gold Case: Antec P110 Silent, 5 intakes 1 exhaust Monitor: AOC G2460PF 1080p 144Hz (150Hz max w/ DP, 121Hz max w/ HDMI) TN panel Keyboard: Logitech G610 Orion (Cherry MX Blue) with SteelSeries Apex M260 keycaps Mouse: BenQ Zowie FK1

 

Model: HP Omen 17 17-an110ca CPU: i7-8750H (0.125V core & cache, 50mV SA undervolt) GPU: GTX 1060 6GB Mobile (+80/+450, 1650MHz~1750MHz 0.78V~0.85V) RAM: 8+8GB DDR4-2400 18-17-17-39 2T Storage: HP EX920 1TB PCIe x4 M.2 SSD + Crucial MX500 1TB 2.5" SATA SSD, 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally, 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172) left outside Monitor: 1080p 126Hz IPS G-sync

 

Desktop benching:

Cinebench R15 Single thread:168 Multi-thread: 833 

SuperPi (v1.5 from Techpowerup, PI value output) 16K: 0.100s 1M: 8.255s 32M: 7m 45.93s

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ARM has even worse security patches for some devices.

 

Android as a clear example.

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11 hours ago, Pickles - Lord of the Jar said:

it is just a matter of win. 

 

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11 hours ago, Jurrunio said:

Straight-line speculation, I wonder if irregular speculation will be the one they need.

isn't that what caused meltdown and spectre though?

🌲🌲🌲

 

 

 

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ARM and x86 being loved

This year is amazing

PC: Motherboard: ASUS B550M TUF-Plus, CPU: Ryzen 3 3100, CPU Cooler: Arctic Freezer 34, GPU: GIGABYTE WindForce GTX1650S, RAM: HyperX Fury RGB 2x8GB 3200 CL16, Case, CoolerMaster MB311L ARGB, Boot Drive: 250GB MX500, Game Drive: WD Blue 1TB 7200RPM HDD.

 

Peripherals: GK61 (Optical Gateron Red) with Mistel White/Orange keycaps, Logitech G102 (Purple), BitWit Ensemble Grey Deskpad. 

 

Audio: Logitech G432, Moondrop Starfield, Mic: Razer Siren Mini (White).

 

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Build Log: 

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1 hour ago, Arika S said:

isn't that what caused meltdown and spectre though?

Branch prediction?

CPU: i7-2600K 4751MHz 1.44V (software) --> 1.47V at the back of the socket Motherboard: Asrock Z77 Extreme4 (BCLK: 103.3MHz) CPU Cooler: Noctua NH-D15 RAM: Adata XPG 2x8GB DDR3 (XMP: 2133MHz 10-11-11-30 CR2, custom: 2203MHz 10-11-10-26 CR1 tRFC:230 tREFI:14000) GPU: Asus GTX 1070 Dual (Super Jetstream vbios, +70(2025-2088MHz)/+400(8.8Gbps)) SSD: Samsung 840 Pro 256GB (main boot drive), Transcend SSD370 128GB PSU: Seasonic X-660 80+ Gold Case: Antec P110 Silent, 5 intakes 1 exhaust Monitor: AOC G2460PF 1080p 144Hz (150Hz max w/ DP, 121Hz max w/ HDMI) TN panel Keyboard: Logitech G610 Orion (Cherry MX Blue) with SteelSeries Apex M260 keycaps Mouse: BenQ Zowie FK1

 

Model: HP Omen 17 17-an110ca CPU: i7-8750H (0.125V core & cache, 50mV SA undervolt) GPU: GTX 1060 6GB Mobile (+80/+450, 1650MHz~1750MHz 0.78V~0.85V) RAM: 8+8GB DDR4-2400 18-17-17-39 2T Storage: HP EX920 1TB PCIe x4 M.2 SSD + Crucial MX500 1TB 2.5" SATA SSD, 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally, 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172) left outside Monitor: 1080p 126Hz IPS G-sync

 

Desktop benching:

Cinebench R15 Single thread:168 Multi-thread: 833 

SuperPi (v1.5 from Techpowerup, PI value output) 16K: 0.100s 1M: 8.255s 32M: 7m 45.93s

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11 minutes ago, Jurrunio said:

Branch prediction?

yeah. making a whole bunch of predictions hoping one is correct and going with that path

🌲🌲🌲

 

 

 

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14 hours ago, SlimyPython said:
Spoiler

Dont worry, I hate the pun too

 

😷

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11 hours ago, TVwazhere said:

 

XD

Be sure to @Pickles von Brine if you want me to see your reply!

Stopping by to praise the all mighty jar Lord pickles... * drinks from a chalice of holy pickle juice and tossed dill over shoulder* ~ @WarDance
3600x | NH-D15 Chromax Black | 32GB 3200MHz | ASUS KO RTX 3070 UnderVolted and UnderClocked | Gigabyte Aorus Elite AX X570S | Seasonic X760w | Phanteks Evolv X | 500GB WD_Black SN750 x2 | Sandisk Skyhawk 3.84TB SSD 

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