CVE-2021-0942

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

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://source.android.com/security/bulletin/2022-09-01	Vendor Advisory
https://source.android.com/security/bulletin/2022-09-01	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:o:google:android:-:*:*:*:*:*:*:*

History

21 Nov 2024, 05:43

Type	Values Removed	Values Added
References	~~() https://source.android.com/security/bulletin/2022-09-01 - Vendor Advisory~~	() https://source.android.com/security/bulletin/2022-09-01 - Vendor Advisory

Information

Published : 2022-09-13 20:15

Updated : 2024-11-21 05:43

NVD link : CVE-2021-0942

Mitre link : CVE-2021-0942

CVE.ORG link : CVE-2021-0942

JSON object : View

Products Affected

google

android

CWE

CWE-125

Out-of-bounds Read

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