In ip6_append_data of ip6_output.c, there is a possible way to achieve code execution due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

References

• https://nvd.nist.gov/vuln/detail/CVE-2018-9389
• https://source.android.com/security/bulletin/pixel/2018-06-01