Headline

CVE-2021-38788: R818

The Background service in Allwinner R818 SoC Android Q SDK V1.0 is used to manage background applications. Malicious apps can use the interface provided by the service to set the number of applications allowed to run in the background to 0 and add themselves to the whitelist, so that once other applications enter the background, they will be forcibly stopped by the system, causing a denial of service.

3 years ago

CVE

Open in Source

#android #mac #dos #git

CPU

• Quad-core ARM Cortex™-A53 up to 1.6GHz
• 32KB L1 I-cache + 32KB L1 D-cache per core, 512KB L2 cache
• Low-power CoolFlex™ power management architecture

GPU

• GE8300 500MHz
• Supports OpenGLES1.1/2.0/3.2, Vulkan1.1, OpenCL1.2

Memory

• 32-bit DDR4/DDR3/DDR3L/LPDDR3/LPDDR4
• eMMC 5.0
• 8-bit TLC/MLC/SLC/EF NAND flash
• SPI Nand flash

Audio

• Supports two audio DAC and two audio ADC
• Supports two analog audio inputs and two analog audio outputs
• Stereo Speaker and capless stereo headphone driver
• Four I2S controllers for connecting Bluetooth and external audio codec
• Integrated digital microphone supports maximum 8 digital microphones

Process

• 28nm HPC+

Display

• Supports one channel MIPI DSI output, 4-lane, up to 1920×1200@60fps
• Supports LVDS output with dual link, up to 1920×1200@60fps
• Supports RGB interface with DE/SYNC mode, up to 1920×1200@60fps
• Supports size up to 2048x2048, with two video layer and two UI layer
• SmartColor2.0 post processing for an excellent display experience

Video

• Supports H.265 decoder 4k@30fps
• Supports H.264 decoder 1080p@30fps
• Supports VP8 decoder 1080p@60fps
• Supports H.264 HP encoder 1080P@60fps
• Supports MJPEG encoder 4k@15fps
• Supports JPEG encoder 13M

Camera

• Compliant with MIPI-CSI2 V1.00 and MIPI DPHY V1.00.00
• 2 MIPI CSI input, 4 data lane and 2 data lane, up to 1Gbps per Lane in HS
• Maximum to 8M@30fps or 13M@10fps, with 4 data lane
• Supports format: YUV422-8bit/10bit, YUV420-8bit/10bit, RAW-8, RAW-10, RAW-12, RGB888, RGB565

ISP

• Up to 8M@30fps or 13M@10fps, can be config as dual 1080p@60fps
• Adjustable 3A functions, including AE, AWB and AF
• Supports spatial(2D) de-noise filter
• Supports contrast enhance and sharping
• Supports chrominance noise reduction
• Supports defect pixel correction

Security

• Supports Symmetrical algorithm: AES, DES, 3DES, XTS, SM4
• Supports Hash algorithm: MD5, SHA, HMAC, SM3
• Supports Asymmetric algorithm: RSA, ECC, SM2
• Supports PRNG and TRNG
• Supports 2K-bit EFUSE for chip ID and security application

Connectivity

• USB 2.0 OTG and HOST, SDIO 3.0, GMAC
• SPI×3, TWI×5, 6xUART×6, PWM×5
• IR TX, IR RX, LEDC, GPADC, LRADC

PMIC

• AXP803 (w.charger)
• AXP806 (wo.charger)

Package

• LFBGA 346balls
• 12mm x 12mm size,0.5 ball pitch,0.3 ball size

• Android 10