What is CVE-2021-39640?

CVE-2021-39640 is a high-severity vulnerability in Google Android, classified under Improper Locking. CVSS score: 7.8/10. Published 2021-12-15.

How severe is CVE-2021-39640?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Google Android

CVE-2021-39640

In __dwc3_gadget_ep0_queue of ep0.c, there is a possible out of bounds write due to improper locking. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-157294279References: N/A

EPSS: 0.001 (1.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Google Android
N/a Android — versions Android kernel

Weakness classification (CWE)

CWE-667 — Improper Locking

References

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

Frequently asked questions

What is CVE-2021-39640?: CVE-2021-39640 is a high-severity vulnerability in Google Android, classified under Improper Locking. CVSS score: 7.8/10. Published 2021-12-15.
How severe is CVE-2021-39640?: High severity. CVSS v3 base score is 7.8 out of 10.