cve/2017/CVE-2017-8246.md

CVE-2017-8246

Description

In function msm_pcm_playback_close() in all Android releases from CAF using the Linux kernel, prtd is assigned substream->runtime->private_data. Later, prtd is freed. However, prtd is not sanitized and set to NULL, resulting in a dangling pointer. There are other functions that access the same memory (substream->runtime->private_data) with a NULL check, such as msm_pcm_volume_ctl_put(), which means this freed memory could be used.

POC

Reference

No PoCs from references.

Github

• https://github.com/thdusdl1219/CVE-Study