High severity7.5NVD Advisory· Published Jan 19, 2022· Updated Jun 17, 2026
CVE-2021-38788
CVE-2021-38788
Description
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.
Affected products
4- cpe:2.3:a:allwinnertech:android_q_sdk:1.0:*:*:*:*:*:*:*
- Allwinner/R818 SoC Android Q SDKdescription
- Range: 1.0
Patches
Vulnerability mechanics
References
4- github.com/pokerfacett/MY_CVE_CREDIT/blob/master/Allwinner%20R818%20SoC%EF%BC%9Abackground%20service%20has%20EoP%20Vulnerability.mdnvdBroken LinkThird Party Advisory
- vul.wangan.com/a/CNVD-2021-46928nvdThird Party Advisory
- www.allwinnertech.com/index.phpnvdProductVendor Advisory
- www.cnvd.org.cn/flaw/show/CNVD-2021-46928nvdThird Party Advisory
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