Security readout for executives and security teams
Plain-English summary
This is a local Android privilege-escalation flaw in mtkscoaudio debugfs. A user or process already running with high privileges could write outside intended kernel memory bounds, potentially gaining system-level control. It is not remotely exploitable based on the supplied CVSS vector.
Executive priority
Treat this as a moderate-priority mobile fleet hygiene issue. It is not shown as internet-facing or actively exploited, but successful abuse could give deep device control after an attacker already has privileged local execution.
Technical view
CVE-2018-9368 is a CWE-787 out-of-bounds write in Android mtkscoaudio debugfs, attributed to missing bounds checks and weakened SELinux policy. CVSS 3.1 is 6.7, with local access, low complexity, high privileges required, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure appears limited to Android builds or SoC-specific firmware containing the vulnerable mtkscoaudio debugfs behavior and SELinux policy state. The supplied affected data names Google Android with SoCVersion but does not identify device models, Android releases, or chipset families.
Exploitation context
The sources describe local escalation of privilege requiring system execution privileges and no user interaction. The bundle marks KEV as false, and no cited source states active exploitation. Practical risk is highest on unpatched Android devices where an attacker has already achieved substantial local execution.
Researcher notes
The public record is sparse. Key missing details include exact SoC versions, device models, fixed build identifiers, and vendor-specific patch mapping. Avoid assuming broad Android exposure without confirming mtkscoaudio debugfs and policy conditions on target firmware.
Mitigation direction
- Check Android Security Bulletin June 2018 and device vendor guidance for applicable fixes.
- Prioritize updates on Android devices with relevant SoC-specific firmware exposure.
- Confirm SELinux policy and debugfs exposure align with vendor-supported production configuration.
- Retire or isolate devices that cannot receive applicable vendor security updates.
Validation and detection
- Inventory Android device models, firmware versions, and security patch levels.
- Map devices against the June 2018 Android bulletin and vendor advisories.
- Review whether mtkscoaudio debugfs is present in authorized test environments.
- Verify production builds do not use weakened SELinux policy configurations.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-787: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2018-9368 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H0.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.7MediumVector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://source.android.com/security/bulletin/2018-06-01CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.