CVEs-PoC/2017/CVE-2017-8244.md

### [CVE-2017-8244](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-8244)
![](https://img.shields.io/static/v1?label=Product&message=Android%20for%20MSM%2C%20Firefox%20OS%20for%20MSM%2C%20QRD%20Android&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=All%20Android%20releases%20from%20CAF%20using%20the%20Linux%20kernel%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Buffer%20overflow%20in%20msm_vidc%20debugfs%20driver%20core_info_read%20and%20inst_info_read%20(CVE-2017-8244)&color=brightgreen)

### Description

In core_info_read and inst_info_read in all Android releases from CAF using the Linux kernel, variable "dbg_buf", "dbg_buf->curr" and "dbg_buf->filled_size" could be modified by different threads at the same time, but they are not protected with mutex or locks. Buffer overflow is possible on race conditions. "buffer->curr" itself could also be overwritten, which means that it may point to anywhere of kernel memory (for write).

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/jiayy/android_vuln_poc-exp