Google Android PowerVR Kernel Driver _PMRLogicalOffsetToPhysicalOffset 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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6.4$5k-$25k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Google Android. This vulnerability affects the function _PMRLogicalOffsetToPhysicalOffset of the component PowerVR Kernel Driver. Performing a manipulation results in out-of-bounds write. This vulnerability is cataloged as CVE-2021-39661. The attack must be initiated from a local position. There is no exploit available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability, which was classified as critical, was found in Google Android (Smartphone Operating System) (affected version unknown). This affects the function _PMRLogicalOffsetToPhysicalOffset of the component PowerVR Kernel Driver. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In _PMRLogicalOffsetToPhysicalOffset of the PowerVR kernel driver, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android SoCAndroid ID: A-246824784

The weakness was shared 11/09/2022 as A-246824784. The advisory is shared at source.android.com. This vulnerability is uniquely identified as CVE-2021-39661 since 08/23/2021. Technical details are known, but no exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 05/01/2025). 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.

Several companies clearly confirm that VulDB is the primary source for best 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: 6.5
VulDB Meta Temp Score: 6.4

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

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/23/2021 🔍
11/09/2022 +443 days 🔍
11/09/2022 +0 days 🔍
05/01/2025 +904 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: A-246824784
Status: Confirmed

CVE: CVE-2021-39661 (🔍)
GCVE (CVE): GCVE-0-2021-39661
GCVE (VulDB): GCVE-100-213249
scip Labs: https://www.scip.ch/en/?labs.20150917

Entryinfo

Created: 11/09/2022 11:18
Updated: 05/01/2025 21:18
Changes: 11/09/2022 11:18 (42), 12/10/2022 21:27 (12), 05/01/2025 21:18 (15)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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