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AndroidOperating system · Google

CVE-2019-9447

MEDIUM · 6.7 CVSS v3.0 Published 2019-09-06
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
69/100
Remediation priority · Elevated
Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
In the Android kernel in the FingerTipS touchscreen driver there is a possible use-after-free due to improper locking. This could lead to a local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

In the Android kernel's FingerTipS touchscreen driver, improper locking synchronization leads to a possible use-after-free condition. This memory safety flaw can be exploited for local privilege escalation to System level without user interaction.

MitigationApply the Android kernel security patch for CVE-2019-9447, which corrects the locking implementation in the FingerTipS touchscreen driver to prevent the use-after-free condition.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
AndroidOperating system
Affected:all versions

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify Android security patch level
    Go to Settings > About Phone > Build Number (or Settings > System > Security > Security patch level on some devices) and note the date shown
    Affected if The security patch level predates July 2019, indicating the kernel has not received the fix for CVE-2019-9447
  2. Confirm FingerTipS touchscreen driver presence
    Check device specifications or kernel config for FingerTipS (fts) touchscreen driver support - this driver is common in Samsung and other flagship devices
    Affected if The device uses a FingerTipS touchscreen controller and the kernel patch is not applied
  3. Check kernel build information
    On a rooted device or through adb shell, run 'un -a' or check /proc/version to view kernel version details
    Affected if The kernel version corresponds to an unpatched build prior to the July 2019 Android security update

A device is affected if it uses a FingerTipS touchscreen driver and lacks the July 2019 or later Android security patch, as this vulnerability exists in the kernel driver code and cannot be mitigated through configuration changes.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply the Android kernel security patch for CVE-2019-9447, which corrects the locking implementation in the FingerTipS touchscreen driver to prevent the use-after-free condition.

Fix this in Android Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing8.0 h
  • Review / QA4.0 h
24.0 hours of engineering $4,160
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2019-9447 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data