CVE-2022-48391
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 · uneditedIn telephony service, there is a possible missing permission check. This could lead to local denial of service with no additional execution privileges.
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 confidenceThis vulnerability exists in the Android telephony service where a missing permission check allows any local application or user to trigger a denial of service condition without requiring any elevated privileges. An attacker can exploit this to crash or hang the telephony service, impacting phone calls, SMS, and other cellular functions.
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= 10.0= 11.0= 12.0CVSS 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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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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Check Android versionRun 'getprop ro.build.version.release' in adb shell, or check Settings > About Phone > Android versionAffected if Version is 10.0, 11.0, or 12.0 (exact match)
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Identify telephony service componentsExamine the Android system logs (logcat) for telephony service interactions, or review the TelephonyManager API calls exposed to applicationsAffected if Telephony service components are accessible to third-party applications without permission validation
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Verify permission enforcementTest whether non-privileged apps can invoke sensitive telephony functions (such as phone call or SMS operations) without receiving permission errors. This can be done by creating a basic app that calls TelephonyManager methods or sending specific intents to the telephony serviceAffected if Non-privileged applications can trigger telephony operations without permission errors or security exceptions
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Check for DoS trigger conditionMonitor telephony service responsiveness when receiving requests from non-system applications. Look for patterns where repeated or malformed requests from untrusted sources can hang or crash the serviceAffected if The telephony service becomes unresponsive or crashes when invoked by non-privileged applications
Environment is affected if running Android 10, 11, or 12 AND the telephony service accepts and processes requests from non-privileged applications without proper permission validation.
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 dataThe fix requires adding appropriate permission checks (likely CHECK_TELEPHONY_PRIVILEGE or equivalent) to the affected telephony service operations to ensure only authorized system components can invoke sensitive telephony functions.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-48391 — 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-2022-48391 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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