What is CVE-2021-39803?

CVE-2021-39803 is a medium-severity vulnerability in Google Android, classified under Use After Free. CVSS score: 6.5/10. Published 2022-04-12.

How severe is CVE-2021-39803?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Use After Free in Google Android

CVE-2021-39803

In ~Impl of C2AllocatorIon.cpp, there is a possible out of bounds read due to a use after free. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12 Android-12LAndroid ID: A-193790350

Vulnerability class: Use-After-Free

EPSS: 0.006 (45.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.

Affected products

Google Android — versions 10.0, 11.0, 12.0
N/a Android — versions Android-10 Android-11 Android-12 Android-12L

Weakness classification (CWE)

CWE-416 — Use After Free

References

security@android.com (Patch, x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-39803?: CVE-2021-39803 is a medium-severity vulnerability in Google Android, classified under Use After Free. CVSS score: 6.5/10. Published 2022-04-12.
How severe is CVE-2021-39803?: Medium severity. CVSS v3 base score is 6.5 out of 10.