Google Android mali_kbase_mem.c kbase_jd_user_buf_pin_pages 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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6.9$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Google Android. Affected by this vulnerability is the function kbase_jd_user_buf_pin_pages of the file mali_kbase_mem.c. Performing a manipulation results in out-of-bounds write. This vulnerability is reported as CVE-2021-39793. The attack requires a local approach. Moreover, an exploit is present. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability classified as critical has been found in Google Android (Smartphone Operating System) (version now known). This affects the function kbase_jd_user_buf_pin_pages of the file mali_kbase_mem.c. 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 weakness was disclosed 03/17/2022 as A-210470189. It is possible to read the advisory at source.android.com. This vulnerability is uniquely identified as CVE-2021-39793 since 08/23/2021. Technical details and a exploit are known. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/29/2025). It is expected to see the exploit prices for this product increasing in the near future.

It is declared as attacked. The CISA Known Exploited Vulnerabilities Catalog lists this issue since 04/11/2022 with a due date of 05/02/2022:

Apply updates per vendor instructions.

Applying a patch is able to eliminate this problem.

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

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.9

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

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 7.8
CNA Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Attacked

EPSS Score: 🔍
EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
KEV Notice: 🔍

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 🔍
03/17/2022 +206 days 🔍
03/17/2022 +0 days 🔍
01/29/2025 +1049 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: A-210470189
Status: Confirmed

CVE: CVE-2021-39793 (🔍)
GCVE (CVE): GCVE-0-2021-39793
GCVE (VulDB): GCVE-100-195327
scip Labs: https://www.scip.ch/en/?labs.20150917

Entryinfo

Created: 03/17/2022 08:09
Updated: 01/29/2025 19:09
Changes: 03/17/2022 08:09 (41), 03/19/2022 16:54 (1), 04/25/2024 15:19 (26), 09/21/2024 10:49 (1), 01/29/2025 19:09 (28)
Complete: 🔍
Cache ID: 216::103

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