What is CVE-2021-39642?

CVE-2021-39642 is a medium-severity vulnerability in Google Android, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 6.4/10. Published 2021-12-15.

How severe is CVE-2021-39642?

Medium severity. CVSS v3 base score is 6.4 out of 10.

Vulnerability in Google Android

CVE-2021-39642

In synchronous_process_io_entries of lwis_ioctl.c, there is a possible out of bounds write due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-195731663References: N/A

Vulnerability class: Race Condition

EPSS: 0.001 (0.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Google Android
N/a Android — versions Android kernel

Weakness classification (CWE)

CWE-362 — Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition)

References

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

Frequently asked questions

What is CVE-2021-39642?: CVE-2021-39642 is a medium-severity vulnerability in Google Android, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 6.4/10. Published 2021-12-15.
How severe is CVE-2021-39642?: Medium severity. CVSS v3 base score is 6.4 out of 10.