CVE-2024-20819
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 · uneditedOut-of-bounds Write vulnerabilities in svc1td_vld_plh_ap of libsthmbc.so prior to SMR Feb-2024 Release 1 allows local attackers to trigger buffer overflow.
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 confidenceA buffer overflow vulnerability in the svc1td_vld_plh_ap function of libsthmbc.so allows local attackers to write beyond buffer boundaries. This occurs prior to the SMR Feb-2024 Release 1 patch on affected Samsung devices, potentially enabling privilege escalation or code execution.
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= 12.0= 13.0= 14.0CVSS 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
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/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 Android versionCheck the device settings: Settings > About Phone > Android version, or run 'getprop ro.build.version.release' via ADB shellAffected if The device runs Android 11.0, 12.0, 13.0, or 14.0
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Locate libsthmbc.so librarySearch for the library file on the device filesystem, typically found in /system/lib64/ or /vendor/lib64/ directory. Run 'find / -name libsthmbc.so 2>/dev/null' via ADB shellAffected if The library file exists on the device
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Extract library version informationUse 'strings' or 'readelf' tool on the libsthmbc.so binary to look for version metadata, or check the file modification timestamp. Run 'ls -la /path/to/libsthmbc.so' to obtain the file timestampAffected if The library timestamp predates the SMR Feb-2024 Release 1 patch date (February 2024)
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Check if vulnerable function is presentAnalyze the binary for the svc1td_vld_plh_ap function using 'nm libsthmbc.so | grep svc1td_vld_plh_ap' or disassemble the function to check for missing boundary checksAffected if The function svc1td_vld_plh_ap exists and lacks proper buffer boundary validation in its implementation
A device is affected if it runs Android 11-14, contains the libsthmbc.so library with a pre-Feb-2024 timestamp, and the svc1td_vld_plh_ap function lacks boundary check protections.
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 Samsung's SMR Feb-2024 Release 1 or later firmware update to patched libsthmbc.so; verify the library version post-update.
SMR Feb-2024 Release 1 (February 2024 Samsung Security Patch Level)
- Check current Android security patch level on the device: Settings > About Phone > Software Information > Android security patch level
- Verify the device is running Android 11, 12, 13, or 14
- Check for system updates: Settings > Software Update > Download and install
- Apply the February 2024 Samsung security update (SMR Feb-2024 Release 1) or later
- After update, confirm Android security patch level shows February 2024 or later
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,600.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-20819 — 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-2024-20819 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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- Version or environment caveats, and links to real fixes
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