CVE-2021-25384
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 · uneditedAn improper input validation vulnerability in sdfffd_parse_chunk_PROP() with Sample Rate Chunk in libsdffextractor library prior to SMR MAY-2021 Release 1 allows attackers to execute arbitrary code on mediaextractor process.
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 improper input validation vulnerability in the sdfffd_parse_chunk_PROP() function when processing Sample Rate Chunk in Samsung's libsdffextractor library allows remote attackers to execute arbitrary code via crafted media files. The lack of proper bounds checking on the Sample Rate Chunk data enables a buffer overflow that can be triggered during media file parsing.
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= 8.1= 9.0= 10.0= 11.0CVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/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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Check Android versionRun 'getprop ro.build.version.release' or check Settings > About Phone > Android versionAffected if The version is 8.1, 9.0, 10.0, or 11.0 - these are the explicitly listed affected versions
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Locate libsdffextractor librarySearch for the library file: 'find /system /vendor /data -name "libsdffextractor*" 2>/dev/null' or check /system/lib/ and /vendor/lib/ directoriesAffected if The library exists on the device, meaning the vulnerable component is present
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Identify mediaextractor usageCheck running processes with 'ps -A | grep mediaextractor' or review SELinux logs for mediaextractor service activityAffected if The mediaextractor process is active and would parse media files using the vulnerable library
If the device runs Android 8.1, 9.0, 10.0, or 11.0 AND contains the libsdffextractor library, the environment is likely affected by this vulnerability when processing media 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.
dbcve · scopedApply the SMR MAY-2021 Release 1 patch or later, which includes the fix for this input validation vulnerability in libsdffextractor. Until patched, avoid processing untrusted media files with the mediaextractor process.
SMR MAY-2021 Release 1 or later
- 1. Check for available system updates on the Samsung device
- 2. Navigate to Settings > Software Update > Download and install
- 3. Ensure the device updates to Samsung's SMR (Security Maintenance Release) for MAY-2021 or later
- 4. Verify the patch level after update by checking Settings > About phone > Software information > Security patch level
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation8.0 h
- Implementation16.0 h
- Testing24.0 h
- Review / QA12.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $16,384.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-25384 — 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-2021-25384 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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