Google Android Kernel Memory remap_pfn_range memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.6$5k-$25k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Google Android. Affected is the function remap_pfn_range of the component Kernel Memory Handler. The manipulation results in memory corruption. This vulnerability is reported as CVE-2022-20238. The attack requires a local approach. No exploit exists. It is best practice to apply a patch to resolve this issue.

Detailsinfo

A vulnerability, which was classified as critical, was found in Google Android (Smartphone Operating System) (affected version unknown). Affected is the function remap_pfn_range of the component Kernel Memory Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

'remap_pfn_range' here may map out of size kernel memory (for example, may map the kernel area), and because the 'vma->vm_page_prot' can also be controlled by userspace, so userspace may map the kernel area to be writable, which is easy to be exploitedProduct: AndroidVersions: Android SoCAndroid ID: A-233154555

The weakness was disclosed 07/14/2022 as A-233154555. The advisory is available at source.android.com. This vulnerability is traded as CVE-2022-20238 since 10/14/2021. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 07/31/2022). 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.

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Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.6

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

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 🔍
07/14/2022 +273 days 🔍
07/14/2022 +0 days 🔍
07/31/2022 +17 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: A-233154555
Status: Confirmed

CVE: CVE-2022-20238 (🔍)
GCVE (CVE): GCVE-0-2022-20238
GCVE (VulDB): GCVE-100-203862
scip Labs: https://www.scip.ch/en/?labs.20150917

Entryinfo

Created: 07/14/2022 08:52
Updated: 07/31/2022 08:46
Changes: 07/14/2022 08:52 (42), 07/31/2022 08:46 (18)
Complete: 🔍
Cache ID: 216::103

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