CVE-2021-39642: Google Android

Medium severity, CVSS 6.4. EPSS: 0.1% chance of exploitation in the next 30 days.

In synchronous_process_io_entries of lwis_ioctl.c, there is a possible out of bounds write due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-195731663References: N/A

Affected products

• Google Android: affected versions not specified

Published 2021-12-15. Last modified 2026-06-17.