CVE-2021-39736

Name of the Vulnerable Software and Affected Versions Android kernel

Description The issue is related to an integer overflow in the prepare io entry and prepare response functions of lwis ioctl.c and lwis periodic io.c, which could lead to a possible out of bounds write. This could result in local escalation of privilege, with System execution privileges needed. User interaction is not required for exploitation.

Recommendations For Android kernel, consider applying a patch that fixes the integer overflow issue in the prepare io entry and prepare response functions as a permanent solution. As a temporary workaround, restrict access to the affected functions to minimize the risk of exploitation.