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AndroidOperating system · Google

CVE-2022-47340

MEDIUM · 5.5 CVSS v3.1 Published 2023-05-09
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
57/100
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 h265 codec firmware, there is a possible out of bounds write due to a missing bounds 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 confidence

A missing bounds check in the h265 codec firmware allows an out-of-bounds write vulnerability. An attacker with local access can trigger this to cause a denial of service by crashing the system or corrupting memory, without requiring elevated privileges.

MitigationObtain and apply the vendor patch for the h265 codec firmware that adds proper bounds checking. If no patch exists, audit the firmware code for the vulnerable code paths and implement bounds validation before memory writes.

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:= 10.0= 11.0= 12.0

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
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 checks

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

  1. Check Android OS version
    Run 'getprop ro.build.version.release' or check Settings > About Phone > Android version. Confirm the version is exactly 10.0, 11.0, or 12.0.
    Affected if Android version is 10.0, 11.0, or 12.0
  2. Verify h265 codec availability
    Check if the h265/HEVC video codec is available on the device by examining MediaCodecList in Android settings or using 'media codec' commands via ADB.
    Affected if The h265/HEVC decoder or encoder is present and enabled on the device
  3. Confirm device uses the vulnerable firmware component
    Identify if the device relies on the stock Android h265 codec firmware rather than a third-party or patched implementation.
    Affected if The device uses the stock/unpatched h265 codec firmware from the affected Android versions

The device is affected if it runs Android 10.0, 11.0, or 12.0 and has the stock h265 (HEVC) codec firmware present and enabled.

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

Obtain and apply the vendor patch for the h265 codec firmware that adds proper bounds checking. If no patch exists, audit the firmware code for the vulnerable code paths and implement bounds validation before memory writes.

Fix this in Android Scoped from the published advisory
  • Consultation4.0 h
  • Implementation6.0 h
  • Testing8.0 h
  • Review / QA4.0 h
22.0 hours of engineering $3,800
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Scan for this in your stack

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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-2022-47340 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