CVE-2022-20092
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 alac decoder, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS06366061; Issue ID: ALPS06366061.
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 confidenceAn out-of-bounds read vulnerability exists in the ALAC (Apple Lossless Audio Codec) decoder due to a missing bounds check. The vulnerability allows a local attacker to read memory contents beyond allocated buffers, leading to information disclosure without requiring any special privileges or 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 data= 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
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
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 OS versionGo to Settings > About Phone > Android version or run 'getprop ro.build.version.release' via ADBAffected if The version is 11.0 or 12.0 - these are the only affected versions listed
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Confirm MediaTek chipset is presentRun 'getprop ro.board.platform' or 'cat /proc/cpuinfo' via ADB to identify the SoC vendorAffected if The device uses a MediaTek chipset, which contains the vulnerable alac decoder component
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Verify ALAC decoder is accessibleCheck if the alac decoder library exists on the device - look for libalac.so or similar audio codec libraries in /system/lib/ or /vendor/lib/Affected if The ALAC decoder library is present on the device, indicating the vulnerable component is available
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Determine if audio playback uses the affected decoderMonitor audio decoding activity or check audio codec configuration - Android may use the MediaTek ALAC decoder for Apple Lossless Audio filesAffected if The device processes ALAC-encoded audio files using the MediaTek decoder, which would trigger the vulnerable code path
A user is affected if they are running Android 11.0 or 12.0 on a device with a MediaTek chipset that contains the vulnerable alac decoder and that decoder is used to process audio files.
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 vendor patch (ALPS06366061) to the MediaTek firmware/software containing the alac decoder. This patch adds the missing bounds check to prevent out-of-bounds memory reads during audio decoding.
- Consultation1.0 h
- Implementation1.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,376.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-20092 — 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-2022-20092 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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