Security readout for executives and security teams
Plain-English summary
CVE-2021-34389 affects NVIDIA Jetson platforms running Jetson Linux before r32.5.1. A local user using a malicious client could read sensitive heap memory from TrustZone because of an incorrect bounds check in NVIDIA OTE protocol message parsing.
Executive priority
Treat as a targeted confidentiality risk, not a broad remote compromise issue. Prioritize remediation where Jetson devices handle sensitive data, run shared workloads, or allow third-party local code.
Technical view
Trusty has an incorrect bounds check in NVIDIA OTE protocol message parsing code present in all TAs. The CVSS 3.1 vector is local, low complexity, low privilege, user interaction required, unchanged scope, and high confidentiality impact only.
Likely exposure
Exposure is limited to listed NVIDIA Jetson, TX2, TX2 NX, AGX Xavier, and Xavier NX systems running Jetson Linux versions before r32.5.1.
Exploitation context
The provided sources do not report active exploitation, and the CVE is not marked KEV. Exploitation requires local access, low privileges, a malicious client, and user interaction according to the CVSS vector.
Researcher notes
Evidence identifies heap memory exposure from TrustZone through OTE message parsing bounds-check failure. The bundle does not provide CWE mapping, proof-of-concept details, or deeper TA-specific impact beyond information disclosure.
Mitigation direction
- Upgrade affected Jetson Linux systems to r32.5.1 or later.
- Review NVIDIA advisory 5205 for platform-specific update guidance.
- Restrict local shell and application access on affected Jetson devices.
- Prioritize devices processing sensitive workloads or exposed to untrusted local users.
Validation and detection
- Inventory Jetson models and Jetson Linux versions.
- Flag any listed platform running a version before r32.5.1.
- Confirm update completion against NVIDIA advisory guidance.
- Review local user and application access on affected devices.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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CVE-2021-34389 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N1.33.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5MediumVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://nvidia.custhelp.com/app/answers/detail/a_id/5205CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.