CVE-2021-38783 : Security Advisory and Response

A Out-of-Bound Write vulnerability has been identified in the Allwinner R818 SoC Android Q SDK V1.0 camera driver, specifically in "/dev/cedar_dev", through iotcl commands IOCTL_SET_PROC_INFO and IOCTL_COPY_PROC_INFO. This vulnerability could potentially lead to a system crash or Escalation of Privileges (EoP).

Understanding CVE-2021-38783

This section will cover what CVE-2021-38783 entails.

What is CVE-2021-38783?

CVE-2021-38783 is an Out-of-Bound Write vulnerability found in the Allwinner R818 SoC Android Q SDK V1.0 camera driver, triggered by specific iotcl commands.

The Impact of CVE-2021-38783

The vulnerability poses a risk of system instability or unauthorized escalation of privileges when exploited.

Technical Details of CVE-2021-38783

Delve into the specifics of CVE-2021-38783 in this section.

Vulnerability Description

The vulnerability arises due to improper handling of user-supplied input in the affected camera driver, leading to Out-of-Bound Write scenarios.

Affected Systems and Versions

Allwinner R818 SoC Android Q SDK V1.0 camera driver is affected by this vulnerability.

Exploitation Mechanism

The vulnerability is triggered through the iotcl commands IOCTL_SET_PROC_INFO and IOCTL_COPY_PROC_INFO in the camera driver.

Mitigation and Prevention

Discover how to mitigate the risks associated with CVE-2021-38783 in this section.

Immediate Steps to Take

It is crucial to apply relevant patches and updates provided by the vendor to address this vulnerability promptly.

Long-Term Security Practices

Implementing secure coding practices and conducting regular security audits can help prevent similar vulnerabilities in the future.

Patching and Updates

Stay informed about security advisories and updates from Allwinner for the camera driver to ensure the system remains secure.