CVE-2021-34374
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 · uneditedTrusty contains a vulnerability in command handlers where the length of input buffers is not verified. This vulnerability can cause memory corruption, which may lead to information disclosure, escalation of privileges, and denial of service.
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 confidenceTrusty (ARM Trusted Execution Environment) contains a vulnerability in its command handler interface where input buffer lengths are not validated before processing. This allows attackers to supply oversized or malformed buffers to trigger memory corruption, potentially enabling information disclosure, privilege escalation, or denial of service attacks from the normal world against the trusted execution environment.
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< 32.5.1CVSS 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.
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Check Jetson Linux versionRun 'cat /etc/nv_tegra_release' or 'uname -r' to identify the installed Jetson Linux version numberAffected if The version is below 32.5.1 (e.g., 32.4.x, 32.3.x, etc.)
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Verify Trusty TEE is presentCheck for Trusty-related files or services: look for 'trusty' in /proc/cmdline, check /vendor or /system partition for Trusty binaries, or run 'ls -la /tee' if that directory existsAffected if Trusty TEE is present and running on the device
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Identify Trusty command handler servicesSearch for Trusty daemon processes: run 'ps -A | grep -i trusty' or examine /vendor/firmware directory for Trusty-related firmware filesAffected if Trusty command handler services or firmware are loaded on the system
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Check for normal world to Trusty communicationReview any applications or drivers that communicate with Trusty (often found in /vendor or /system partitions), check for any exposed Trusty IPC endpointsAffected if There are applications or drivers that invoke Trusty commands from the normal world
A user is affected if they are running Nvidia Jetson Linux version below 32.5.1 with Trusty TEE enabled and any normal-world applications that interact with Trusty's command handler interface are in use.
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 data32.5.1
Implement proper bounds checking and length validation for all input buffers in Trusty command handlers before any memory operations; ensure all data received from the non-secure world is validated against expected size parameters.
- Consultation8.0 h
- Implementation16.0 h
- Testing12.0 h
- Review / QA8.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $12,352.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-34374 — 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-2021-34374 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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