CVE-2021-38785

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

Description The issue is related to a NULL pointer deference in the camera driver /dev/cedar dev. This could be exploited using the ioctl cmd IOCTL GET IOMMU ADDR to cause a system crash.

Recommendations For Allwinner R818 SoC Android Q SDK V1.0, consider disabling the ioctl cmd IOCTL GET IOMMU ADDR as a temporary workaround until a patch is available. Restrict access to the /dev/cedar dev camera 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.