CVEs-PoC/2021/CVE-2021-25518.md

### [CVE-2021-25518](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25518)
![](https://img.shields.io/static/v1?label=Product&message=Samsung%20Mobile%20Devices&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=P(9.0)%2C%20Q(10.0)%2C%20R(11.0)%20devices%20with%20selected%20Exynos%20chipsets%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-119%3A%20Improper%20Restriction%20of%20Operations%20within%20the%20Bounds%20of%20a%20Memory%20Buffer&color=brightgreen)

### Description

An improper boundary check in secure_log of LDFW and BL31 prior to SMR Dec-2021 Release 1 allows arbitrary memory write and code execution.

### POC

#### Reference
- https://security.samsungmobile.com/securityUpdate.smsb?year=2021&month=12

#### Github
No PoCs found on GitHub currently.