Google Android backing-dev.c bdi_put memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.5$5k-$25k0.00

Summaryinfo

A vulnerability classified as critical has been found in Google Android. This affects the function bdi_put of the file backing-dev.c. The manipulation leads to memory corruption. This vulnerability is traded as CVE-2022-20158. An attack has to be approached locally. There is no exploit available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Google Android (Smartphone Operating System) (version now known). This issue affects the function bdi_put of the file backing-dev.c. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In bdi_put and bdi_unregister of backing-dev.c, there is a possible memory corruption due to a use after free. 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-182815710References: Upstream kernel

The weakness was shared 08/11/2022 as A-182815710. It is possible to read the advisory at source.android.com. The identification of this vulnerability is CVE-2022-20158 since 10/14/2021. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 12/18/2025). It is expected to see the exploit prices for this product increasing in the near future.

Applying a patch is able to eliminate this problem.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.6

VulDB Base Score: 6.7
VulDB Temp Score: 6.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.7
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Memory corruption
CWE: 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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/14/2021 🔍
08/11/2022 +301 days 🔍
08/11/2022 +0 days 🔍
12/18/2025 +1224 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: A-182815710
Status: Confirmed

CVE: CVE-2022-20158 (🔍)
GCVE (CVE): GCVE-0-2022-20158
GCVE (VulDB): GCVE-100-206219
scip Labs: https://www.scip.ch/en/?labs.20150917

Entryinfo

Created: 08/11/2022 20:50
Updated: 12/18/2025 00:23
Changes: 08/11/2022 20:50 (42), 12/18/2025 00:23 (25)
Complete: 🔍
Cache ID: 216::103

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