CVE-2023-20740
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 vcu, there is a possible memory corruption due to a logic error. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07559819; Issue ID: ALPS07559840.
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 memory corruption vulnerability exists in the VCU (Video Coding Unit) component caused by a logic error, allowing local privilege escalation 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 data= 22.2= 4.0= 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
- 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.
-
Identify the OS and versionRun 'cat /etc/os-release' for Yocto-based systems, or 'getprop ro.build.version.release' for Android to determine if the system matches version 22.2 (IoT Yocto), 4.0 (Yocto), or 12.0 (Android)Affected if The installed OS version exactly matches 22.2, 4.0, or 12.0 respectively
-
Check for VCU driver presenceSearch for VCU-related kernel modules using 'lsmod | grep -i vcu' or check /sys/module/ for vcu-related modules, or 'find /dev -name *vcu*' on AndroidAffected if A VCU (Video Coding Unit) driver or module is present on the system
-
Verify VCU kernel driver versionIf VCU module is found, check its version via 'modinfo <vcu_module>' or check the driver file version metadataAffected if The VCU driver version corresponds to the affected Android 12.0, Yocto 4.0, or IoT Yocto 22.2 kernel tree
-
Confirm Android build fingerprintOn Android, run 'getprop ro.build.fingerprint' to confirm the exact build matches Android 12.0 distributionAffected if Build fingerprint indicates an unpatched Android 12.0 release
System is affected if it runs Android 12.0, Yocto 4.0, or IoT Yocto 22.2 with the VCU component present, as the memory corruption vulnerability exists in the Video Coding Unit for these specific versions.
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 vendor patch ALPS07559819 to address the logic error causing memory corruption in the VCU component.
- Consultation6.0 h
- Implementation4.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,144.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-20740 — 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-2023-20740 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
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.
- 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