CVE-2021-38787

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

There is an integer overflow in the ION driver "/dev/ion" of Allwinner R818 SoC Android Q SDK V1.0 that could use the ioctl cmd "COMPAT_ION_IOC_SUNXI_FLUSH_RANGE" to cause a system crash (denial of service).

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-190

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://github.com/pokerfacett/MY_CVE_CREDIT/blob/master/Allwinner%20R818%20SoC%EF%BC%9AION%20Driver%20Integer%20Overflow.mdBroken Link, Third Party Advisory
https://vul.wangan.com/a/CNVD-2021-49171Third Party Advisory
https://www.allwinnertech.com/index.php?c=product&a=index&id=92Product, Vendor Advisory
https://www.cnvd.org.cn/flaw/show/CNVD-2021-49171Third Party Advisory
https://github.com/pokerfacett/MY_CVE_CREDIT/blob/master/Allwinner%20R818%20SoC%EF%BC%9AION%20Driver%20Integer%20Overflow.mdBroken Link, Third Party Advisory
https://vul.wangan.com/a/CNVD-2021-49171Third Party Advisory
https://www.allwinnertech.com/index.php?c=product&a=index&id=92Product, Vendor Advisory
https://www.cnvd.org.cn/flaw/show/CNVD-2021-49171Third Party Advisory

Timeline

Published: Jan 19, 2022
Last modified: Jun 17, 2026
NVD status: Modified

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