CVE-2022-42502
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 FacilityLock::Parse of simdata.cpp, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-241231970References: N/A
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 confidenceA missing bounds check in FacilityLock::Parse function in simdata.cpp allows an out-of-bounds write vulnerability in the Android kernel. This memory corruption issue can be exploited locally to escalate privileges to System level without requiring user interaction.
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 dataall versionsCVSS 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:3.1/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 checksWork through these to decide whether this CVE applies to you.
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Confirm device is running Google AndroidCheck /system/build.prop for ro.build.fingerprint or run 'getprop ro.product.model' to verify the device is an Android deviceAffected if Device is not running Google Android (this vulnerability only affects Android kernel)
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Check Android security patch levelRun 'getprop ro.build.version.security_patch' to retrieve the installed security patch dateAffected if Security patch level is earlier than the November 2022 Android security bulletin (the patch A-241231970 was released in this timeframe)
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Verify FacilityLock::Parse bounds check presenceInspect the kernel source file simdata.cpp in the FacilityLock::Parse function for proper bounds validation before array accessAffected if The FacilityLock::Parse function lacks bounds checking code before accessing facility lock data arrays, allowing out-of-bounds write
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Check for SIM facility lock configuration exposureAttempt to read SIM facility lock settings via AT command or carrier configuration APIs that invoke FacilityLock::Parse in simdata.cppAffected if The kernel processes SIM facility lock data without validating array bounds, leading to memory corruption
A defender is affected if running Google Android with a security patch level prior to the November 2022 Android security bulletin, as the missing bounds check in FacilityLock::Parse remains unpatched.
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 the Android kernel security patch for A-241231970 which adds proper bounds validation in the FacilityLock::Parse function to prevent buffer overflows during SIM data parsing.
- Consultation4.0 h
- Implementation8.0 h
- Testing12.0 h
- Review / QA6.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $8,192.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-42502 — 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-2022-42502 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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