PT-2022-10776 · Google+1 · Android Q Sdk+1

Published 2022-01-19 · Updated 2022-01-26 · CVE-2021-38787

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Allwinner R818 SoC Android Q SDK V1.0

Description The issue is an integer overflow in the ION driver "/dev/ion" that could cause a system crash, resulting in a denial of service. This can be triggered using the ioctl cmd COMPAT ION IOC SUNXI FLUSH RANGE.

Recommendations For Allwinner R818 SoC Android Q SDK V1.0, as a temporary workaround, consider restricting access to the /dev/ion driver until a patch is available. Avoid using the ioctl cmd COMPAT ION IOC SUNXI FLUSH RANGE in the affected driver to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

CVE-2021-38787

Affected Products

Allwinner R818 Soc

Android Q Sdk

References · 8

• 🔥 https://github.com/pokerfacett/MY_CVE_CREDIT/blob/master/Allwinner%20R818%20SoC%EF%BC%9AION%20Driver%20Integer%20Overflow.md · Exploit
• https://osv.dev/vulnerability/CVE-2021-38787 · Vendor Advisory
• https://allwinnertech.com/index.php?c=product&a=index&id=92 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-38787 · Security Note
• https://cnvd.org.cn/flaw/show/CNVD-2021-49171 · Note
• https://vul.wangan.com/a/CNVD-2021-49171 · Note
• https://t.me/cvenotify/25647 · Telegram Post
• https://t.me/cibsecurity/35864 · Telegram Post