Security readout for executives and security teams
Plain-English summary
CVE-2021-34390 affects NVIDIA Jetson TX1 devices running Jetson Linux before r32.5.1. A local, low-privileged user can trigger an integer overflow in NVIDIA TLK/Trusty through a user-triggered SMC path, potentially causing denial of service. The known impact is availability, not data theft or integrity loss.
Executive priority
Treat this as a moderate operational availability risk. It is not shown as remotely exploitable or actively exploited, but older Jetson TX1 devices in production should be updated to avoid preventable outages.
Technical view
The issue is a missing check in an NVIDIA TLK kernel function within Trusty. The CVSS 3.1 score is 5.3 with local access, high complexity, low privileges, user interaction, changed scope, and high availability impact. Sources list Jetson TX1 before Jetson Linux r32.5.1 as affected.
Likely exposure
Exposure is most likely in embedded, edge, robotics, IoT, or lab systems still running Jetson TX1 on Jetson Linux releases earlier than r32.5.1.
Exploitation context
The bundle does not show CISA KEV listing or active exploitation evidence. Exploitation requires local access, low privileges, high attack complexity, and user interaction, limiting broad remote risk but still mattering for shared or physically accessible devices.
Researcher notes
Evidence is limited to CVE and NVIDIA advisory references. No CWE is listed in the bundle. Do not assume other Jetson models are affected unless NVIDIA guidance says so. Focus validation on version state and local-access exposure.
Mitigation direction
- Upgrade affected Jetson TX1 systems to Jetson Linux r32.5.1 or later.
- Review NVIDIA advisory a_id/5205 for vendor-specific remediation details.
- Restrict local account access on Jetson TX1 devices until updates are complete.
- Prioritize devices in exposed, shared, kiosk, lab, or operational environments.
Validation and detection
- Inventory Jetson TX1 devices and record installed Jetson Linux release versions.
- Confirm no affected device is running a release earlier than r32.5.1.
- Check vulnerability scanners or asset data for CVE-2021-34390 coverage.
- Review local user access paths 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
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2021-34390 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:N/I:N/A:H
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:H/PR:L/UI:R/S:C/C:N/I:N/A:H0.84Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.3MediumVector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:N/I:N/A:H
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.