Linux KernelOperating system · Linux
CVE-2016-8398
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 · uneditedUnauthenticated messages processed by the UE. Certain NAS messages are processed when no EPS security context exists in the UE. Product: Android. Versions: Kernel 3.18. Android ID: A-31548486. References: QC-CR#877705.
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 · high confidenceVulnerability in Android kernel 3.18 allows unauthenticated NAS (Non-Access Stratum) messages to be processed by the User Equipment when no EPS (Evolved Packet System) security context exists. This protocol-level flaw in LTE/4G stack processing could allow a malicious network entity to inject or manipulate traffic without proper authentication.
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
Linux KernelOperating system
= 3.18CVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:N/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 checksWork through these to decide whether this CVE applies to you.
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Identify the kernel versionRun 'uname -r' or check /proc/version to determine the exact kernel version running on the deviceAffected if The kernel version is exactly 3.18
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Confirm Android environmentVerify the device is running Android (check system properties with 'getprop ro.build.version.release' or similar)Affected if The device runs Android with kernel 3.18
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Check LTE/4G capabilityDetermine if the device has LTE/4G modem capability (check hardware specs, modem status via 'getprop' or 'settings' menus)Affected if Device has LTE/4G capability and runs kernel 3.18
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Assess security context stateThis is a protocol-level check; there is no straightforward user-accessible command to verify EPS security context state. The condition is theoretical at detection time: vulnerability applies if device connects to a network without established EPS security contextAffected if Device with kernel 3.18 connects to LTE networks (the flaw is inherent to the kernel version regardless of current network state)
A device is affected if it runs Android with Linux kernel version 3.18 and has LTE/4G capability, as the vulnerable NAS message processing code is present in that specific kernel version.
Generated from the published advisory. Verify against your own configuration.
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 dataApply Android security patches that address kernel 3.18 vulnerabilities; users should ensure their devices receive运营商 (carrier) and OEM updates that include the fix for Android ID A-31548486.
Fix this in Linux Kernel
Scoped from the published advisory
- Consultation4.0 h
- Implementation16.0 h
- Testing12.0 h
- Review / QA8.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $11,072.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2016-8398 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2016-8398 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- 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
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