CVE-2021-39640 — HIGH (7.8)

Vulnerability Description

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

CVSS Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Google	Android	-

Related Weaknesses (CWE)

CWE-667

References

https://source.android.com/security/bulletin/pixel/2021-12-01PatchVendor Advisory
https://source.android.com/security/bulletin/pixel/2021-12-01PatchVendor Advisory

FAQ

What is CVE-2021-39640?

CVE-2021-39640 is a vulnerability with a CVSS score of 7.8 (HIGH). 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. U...

How severe is CVE-2021-39640?

CVE-2021-39640 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-39640?

Check the references section above for vendor advisories and patch information. Affected products include: Google Android.