Security readout for executives and security teams
Plain-English summary
This CVE describes a memory safety bug in Qualcomm Snapdragon PMU driver handling. Affected devices span mobile, IoT, automotive, and wearable chipsets. The public bundle does not provide CVSS, impact detail, or confirmed exploitation, so business urgency depends on whether your fleet uses listed Snapdragon platforms.
Executive priority
Prioritize asset identification first. The issue may matter for fleets with Qualcomm-based mobile, IoT, automotive, or wearable devices, but the provided evidence is insufficient to rank it as urgent without confirmed affected assets.
Technical view
The issue is a use-after-free caused by improper hrtimer handling when the PMU driver accesses its events. The affected list includes multiple Qualcomm Snapdragon product families and chipsets. No CWE, CVSS vector, CPE mapping, exploit details, or explicit remediation text is included in the provided bundle.
Likely exposure
Exposure is most likely on embedded, mobile, IoT, automotive, or wearable devices using the listed Qualcomm chipsets. Standard servers are unlikely to be affected unless they incorporate these Snapdragon platforms.
Exploitation context
The source bundle marks KEV as false and provides no cited evidence of active exploitation or public weaponization. Treat exploit status as unconfirmed, not actively exploited.
Researcher notes
Key gaps are missing CVSS, CWE, CPEs, impact scope, and explicit patch details. Analysis should stay tied to the PMU driver hrtimer use-after-free description and the listed Snapdragon chipset families.
Mitigation direction
- Inventory devices using the listed Qualcomm Snapdragon chipsets.
- Check Qualcomm, Code Aurora, OEM, and carrier advisories for CVE-2018-13920 guidance.
- Apply vendor-provided firmware or OS updates when available.
- Prioritize unsupported exposed embedded or mobile devices for replacement or isolation.
- Track vendor patch status for long-life IoT and automotive deployments.
Validation and detection
- Map each device model to its Qualcomm chipset or SoC.
- Confirm whether firmware release notes mention CVE-2018-13920 or the April 2019 bulletin.
- Verify current OS or firmware patch level against OEM guidance.
- Identify unsupported devices that cannot receive vendor security updates.
- Document remaining exposure where vendor evidence is unavailable.
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.
CVE-2018-13920 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.codeaurora.org/security-bulletin/2019/04/01/april-2019-code-aurora-security-bulletinCVE reference · x_refsource_CONFIRM
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.