CVE-2018-9428 — In startDevice of AAudioServiceStreamBase

In startDevice of AAudioServiceStreamBase.cpp there is a possible out of bounds write due to a use after free. This could lead to local arbitrary code execution with no additional execution privileges needed. User interaction is needed for exploitation. https://source.android.com

01What is this vulnerability?

In startDevice of AAudioServiceStreamBase.cpp there is a possible out of bounds write due to a use after free. This could lead to local arbitrary code execution with no additional execution privileges needed. User interaction is needed for exploitation. https://source.android.com/security/bulletin/2018-07-01

02Affected products

Vendor	Product	Versions
Google	Android	8.1

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2024-11-19T21:25:02.634Z
• Last modified: 2024-11-20T15:27:16.790Z

09References

• source.android.com — https://source.android.com/security/bulletin/2018-07-01