What is CVE-2023-21402?

CVE-2023-21402 is a critical-severity vulnerability in Google Android. CVSS score: 9.8/10. Published 2023-12-04.

How severe is CVE-2023-21402?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Google Android

CVE-2023-21402

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.

EPSS: 0.004 (33.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Google Android — versions Android SoC

References

security@android.com (Vendor Advisory)

Frequently asked questions

What is CVE-2023-21402?: CVE-2023-21402 is a critical-severity vulnerability in Google Android. CVSS score: 9.8/10. Published 2023-12-04.
How severe is CVE-2023-21402?: Critical severity. CVSS v3 base score is 9.8 out of 10.