CVE-2015-6640: Google Android

High severity, CVSS 7.8. EPSS: 0.7% chance of exploitation in the next 30 days.

The prctl_set_vma_anon_name function in kernel/sys.c in Android before 5.1.1 LMY49F and 6.0 before 2016-01-01 does not ensure that only one vma is accessed in a certain update action, which allows attackers to gain privileges or cause a denial of service (vma list corruption) via a crafted application, aka internal bug 20017123.

Affected products

• Google Android: version 4.4.4 only; version 5.0 only; version 5.1.1 only; version 6.0 only

Published 2016-01-06. Last modified 2026-06-17.