Google Android USB Gadget Subsystem out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Google Android. The affected element is an unknown function of the component USB Gadget Subsystem. The manipulation leads to out-of-bounds write. This vulnerability is documented as CVE-2021-39685. The attack needs to be performed locally. There is not any exploit available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Google Android (Smartphone Operating System) (the affected version is unknown). This issue affects an unknown code of the component USB Gadget Subsystem. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability.

The weakness was released 03/17/2022 as A-210292376. It is possible to read the advisory at source.android.com. The identification of this vulnerability is CVE-2021-39685 since 08/23/2021. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/18/2025). It is expected to see the exploit prices for this product increasing in the near future.

The vulnerability scanner Nessus provides a plugin with the ID 236670 (Alibaba Cloud Linux 3 : 0125: cloud-kernel bugfix, enhancement and (ALINUX3-SA-2022:0125)), which helps to determine the existence of the flaw in a target environment.

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at Tenable (236670). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 236670
Nessus Name: Alibaba Cloud Linux 3 : 0125: cloud-kernel bugfix, enhancement and (ALINUX3-SA-2022:0125)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/23/2021 🔍
03/17/2022 +206 days 🔍
03/17/2022 +0 days 🔍
05/18/2025 +1158 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: A-210292376
Status: Confirmed

CVE: CVE-2021-39685 (🔍)
GCVE (CVE): GCVE-0-2021-39685
GCVE (VulDB): GCVE-100-195311
scip Labs: https://www.scip.ch/en/?labs.20150917

Entryinfo

Created: 03/17/2022 07:30
Updated: 05/18/2025 18:27
Changes: 03/17/2022 07:30 (40), 03/19/2022 15:12 (1), 05/18/2025 18:27 (16)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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