CVE-2021-38785

Name: CVE-2021-38785
Creator: NVD / NIST
Published: 2022-01-18T14:15:08.133+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.82%

Last modified Jun 17, 2026

CVE-2021-38785 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. There is a NULL pointer deference in the Allwinner R818 SoC Android Q SDK V1.0 camera driver /dev/cedar_dev that could use the ioctl cmd IOCTL_GET_IOMMU_ADDR to cause a system crash.. EPSS estimates a 1.82% chance of exploitation in the next 30 days.

Description

There is a NULL pointer deference in the Allwinner R818 SoC Android Q SDK V1.0 camera driver /dev/cedar_dev that could use the ioctl cmd IOCTL_GET_IOMMU_ADDR to cause a system crash.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.82%

76.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Allwinnertech	Android Q Sdk	1.0

References

https://github.com/pokerfacett/MY_CVE_CREDIT/blob/master/Allwinner%20R818%20SoC%EF%BC%9ACamera%20Driver%20has%20Null%20Pointer%20Dereference%20Vulnerability.mdBroken Link
https://vul.wangan.com/a/CNVD-2021-49170Third Party Advisory
https://www.allwinnertech.com/index.php?c=product&a=index&id=92Product, Vendor Advisory
https://www.cnvd.org.cn/flaw/show/CNVD-2021-49170Third Party Advisory
https://github.com/pokerfacett/MY_CVE_CREDIT/blob/master/Allwinner%20R818%20SoC%EF%BC%9ACamera%20Driver%20has%20Null%20Pointer%20Dereference%20Vulnerability.mdBroken Link
https://vul.wangan.com/a/CNVD-2021-49170Third Party Advisory
https://www.allwinnertech.com/index.php?c=product&a=index&id=92Product, Vendor Advisory
https://www.cnvd.org.cn/flaw/show/CNVD-2021-49170Third Party Advisory

Timeline

Published: Jan 18, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-38785?

There is a NULL pointer deference in the Allwinner R818 SoC Android Q SDK V1.0 camera driver /dev/cedar_dev that could use the ioctl cmd IOCTL_GET_IOMMU_ADDR to cause a system crash.

How severe is CVE-2021-38785?

CVE-2021-38785 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.82% probability of exploitation in the next 30 days.

How do I fix CVE-2021-38785?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-38785?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST