What is CVE-2023-21216?

CVE-2023-21216 is a critical-severity vulnerability in Google Android, classified under Incorrect Default Permissions. CVSS score: 9.8/10. Published 2023-12-04.

How severe is CVE-2023-21216?

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

Vulnerability in Google Android

CVE-2023-21216

In PMRChangeSparseMemOSMem of physmem_osmem_linux.c, there is a possible arbitrary code execution due to a use after free. 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 (32.5th 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

Weakness classification (CWE)

CWE-276 — Incorrect Default Permissions

References

security@android.com (Vendor Advisory)

Frequently asked questions

What is CVE-2023-21216?: CVE-2023-21216 is a critical-severity vulnerability in Google Android, classified under Incorrect Default Permissions. CVSS score: 9.8/10. Published 2023-12-04.
How severe is CVE-2023-21216?: Critical severity. CVSS v3 base score is 9.8 out of 10.