CVE-2021-39636: Google Android

Medium severity, CVSS 4.4. EPSS: 0.2% chance of exploitation in the next 30 days.

In do_ipt_get_ctl and do_ipt_set_ctl of ip_tables.c, there is a possible way to leak kernel information due to uninitialized data. This could lead to local information disclosure with system execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-120612905References: Upstream kernel

Affected products

• Google Android: affected versions not specified

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