CVE-2023-21402: Google Android

Critical severity, CVSS 9.8. EPSS: 0.4% chance of exploitation in the next 30 days.

In MMU_UnmapPages of mmu_common.c, there is a possible out of bounds read due to improper input validation. This could lead to local escalation of privilege in the kernel with no additional execution privileges needed. User interaction is not needed for exploitation.

Affected products

• Google Android: affected versions not specified

Published 2023-12-04. Last modified 2026-06-17.