CVE-2021-0942

 

Published at: - 13-09-2022 10:15

Last modified: - 13-09-2022 10:43

Total changes: - 1

Description

The path in this case is a little bit convoluted. The end result is that via an ioctl an untrusted app can control the ui32PageIndex offset in the expression:sPA.uiAddr = page_to_phys(psOSPageArrayData->pagearray[ui32PageIndex]);With the current PoC this crashes as an OOB read. However, given that the OOB read value is ending up as the address field of a struct I think i seems plausible that this could lead to an OOB write if the attacker is able to cause the OOB read to pull an interesting kernel address. Regardless if this is a read or write, it is a High severity issue in the kernel.Product: AndroidVersions: Android SoCAndroid ID: A-238904312

Common Vulnerability Scoring System (CVSS)

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Verification logic

 

Reference

• https://source.android.com/security/bulletin/2022-09-01

 

Keywords

NVD

 

CVE-2021-0942

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures