cve/2021/CVE-2021-30660.md

### [CVE-2021-30660](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30660)
![](https://img.shields.io/static/v1?label=Product&message=iOS%20and%20iPadOS&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=macOS&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=tvOS&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=watchOS&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2011.3%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2014.5%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3C%207.4%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=A%20malicious%20application%20may%20be%20able%20to%20disclose%20kernel%20memory&color=brighgreen)

### Description

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5. A malicious application may be able to disclose kernel memory.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/Siguza/ios-resources
- https://github.com/houjingyi233/macOS-iOS-system-security